| ☒ | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | |||||||
| ☐ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | |||||||

| Delaware | 00-0000000 | |||||||||||||
| (State or Other Jurisdiction of Incorporation or Organization) | (I.R.S. Employer Identification No.) | |||||||||||||
| 2655 Seely Avenue, Building 5, | San Jose, | California | 95134 | |||||||||||
| (Address of Principal Executive Offices) | (Zip Code) | |||||||||||||
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered | ||||||||||||
| Common Stock, $0.01 par value per share | CDNS | Nasdaq Global Select Market | ||||||||||||
| Large Accelerated Filer | ☒ | Accelerated Filer | ☐ | Smaller Reporting Company | ☐ | |||||||||||||||||||||
| Non-accelerated Filer | ☐ | Emerging Growth Company | ☐ | |||||||||||||||||||||||
| Page | ||||||||
| PART I. | FINANCIAL INFORMATION | |||||||
| Item 1. | ||||||||
| Item 2. | ||||||||
| Item 3. | ||||||||
| Item 4. | ||||||||
| PART II. | OTHER INFORMATION | |||||||
| Item 1. | ||||||||
| Item 1A. | ||||||||
| Item 2. | ||||||||
| Item 3. | ||||||||
| Item 4. | ||||||||
| Item 5. | ||||||||
| Item 6. | ||||||||
| As of | |||||||||||
| September 30, 2026 | December 31, 2025 | ||||||||||
| ASSETS | |||||||||||
| Current assets: | |||||||||||
| Cash and cash equivalents | $ | 1,452,020 | $ | 3,001,317 | |||||||
| Receivables, net | 1,110,591 | 944,939 | |||||||||
| Inventories | 448,824 | 303,545 | |||||||||
| Prepaid expenses and other | 342,452 | 419,872 | |||||||||
| Total current assets | 3,353,887 | 4,669,673 | |||||||||
| Property, plant and equipment, net | 603,189 | 517,004 | |||||||||
| Goodwill | 4,926,955 | 2,749,143 | |||||||||
| Acquired intangibles, net | 1,792,006 | 718,223 | |||||||||
| Deferred taxes | 789,077 | 917,733 | |||||||||
| Other assets | 759,660 | 581,372 | |||||||||
| Total assets | $ | 12,224,774 | $ | 10,153,148 | |||||||
| LIABILITIES AND STOCKHOLDERS’ EQUITY | |||||||||||
| Current liabilities: | |||||||||||
| Revolving credit facility | $ | 150,000 | $ | — | |||||||
Current portion of long-term debt | 498,809 | — | |||||||||
| Accounts payable and accrued liabilities | 805,365 | 856,856 | |||||||||
| Current portion of deferred revenue | 1,012,305 | 778,435 | |||||||||
| Total current liabilities | 2,466,479 | 1,635,291 | |||||||||
| Long-term liabilities: | |||||||||||
| Long-term portion of deferred revenue | 138,228 | 155,997 | |||||||||
| Long-term debt | 1,984,433 | 2,480,150 | |||||||||
| Other long-term liabilities | 760,383 | 407,529 | |||||||||
| Total long-term liabilities | 2,883,044 | 3,043,676 | |||||||||
| Commitments and contingencies (Note 15) | |||||||||||
| Stockholders’ equity: | |||||||||||
| Common stock and capital in excess of par value | 6,039,272 | 4,719,443 | |||||||||
| Treasury stock, at cost | (7,188,558) | (6,344,213) | |||||||||
| Retained earnings | 8,093,239 | 7,100,756 | |||||||||
Accumulated other comprehensive loss | (68,702) | (1,805) | |||||||||
| Total stockholders’ equity | 6,875,251 | 5,474,181 | |||||||||
| Total liabilities and stockholders’ equity | $ | 12,224,774 | $ | 10,153,148 | |||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| Revenue: | |||||||||||||||||||||||
| Product and maintenance | $ | 1,487,311 | $ | 1,207,703 | $ | 4,266,901 | $ | 3,489,063 | |||||||||||||||
| Services | 146,000 | 131,135 | 425,081 | 367,582 | |||||||||||||||||||
| Total revenue | 1,633,311 | 1,338,838 | 4,691,982 | 3,856,645 | |||||||||||||||||||
| Costs and expenses: | |||||||||||||||||||||||
| Cost of product and maintenance | 173,867 | 118,702 | 502,362 | 374,672 | |||||||||||||||||||
| Cost of services | 61,753 | 63,493 | 187,123 | 158,823 | |||||||||||||||||||
| Marketing and sales | 242,476 | 192,560 | 694,995 | 595,855 | |||||||||||||||||||
| Research and development | 537,541 | 423,031 | 1,577,251 | 1,304,190 | |||||||||||||||||||
| General and administrative | 113,020 | 78,035 | 289,785 | 210,162 | |||||||||||||||||||
| Amortization of acquired intangibles | 33,779 | 10,233 | 88,304 | 28,359 | |||||||||||||||||||
| Loss related to contingent liability (Note 15) | — | — | — | 128,545 | |||||||||||||||||||
| Restructuring | 42,159 | 27,394 | 41,802 | 27,332 | |||||||||||||||||||
| Total costs and expenses | 1,204,595 | 913,448 | 3,381,622 | 2,827,938 | |||||||||||||||||||
| Income from operations | 428,716 | 425,390 | 1,310,360 | 1,028,707 | |||||||||||||||||||
| Interest expense | (30,375) | (29,035) | (97,124) | (87,101) | |||||||||||||||||||
| Other income (expense), net | 9,994 | (3,572) | 133,436 | 87,476 | |||||||||||||||||||
| Income before provision for income taxes | 408,335 | 392,783 | 1,346,672 | 1,029,082 | |||||||||||||||||||
| Provision for income taxes | 118,588 | 105,661 | 354,189 | 308,330 | |||||||||||||||||||
| Net income | $ | 289,747 | $ | 287,122 | $ | 992,483 | $ | 720,752 | |||||||||||||||
| Net income per share – basic | $ | 1.06 | $ | 1.06 | $ | 3.63 | $ | 2.65 | |||||||||||||||
| Net income per share – diluted | $ | 1.05 | $ | 1.05 | $ | 3.61 | $ | 2.64 | |||||||||||||||
| Weighted average common shares outstanding – basic | 273,748 | 271,152 | 273,260 | 271,471 | |||||||||||||||||||
| Weighted average common shares outstanding – diluted | 275,278 | 273,798 | 275,061 | 273,440 | |||||||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| Net income | $ | 289,747 | $ | 287,122 | $ | 992,483 | $ | 720,752 | |||||||||||||||
Other comprehensive income (loss), net of tax effects: | |||||||||||||||||||||||
| Foreign currency translation adjustments | (11,086) | (17,562) | (64,482) | 195,355 | |||||||||||||||||||
| Changes in defined benefit plan liabilities | 266 | 560 | (278) | 953 | |||||||||||||||||||
Reclassification of losses on derivatives designated as hedging instruments | 209 | 200 | 620 | 592 | |||||||||||||||||||
Unrealized gains (losses) on available-for-sale debt securities | (1,939) | 129 | (2,757) | 847 | |||||||||||||||||||
Total other comprehensive income (loss), net of tax effects | (12,550) | (16,673) | (66,897) | 197,747 | |||||||||||||||||||
| Comprehensive income | $ | 277,197 | $ | 270,449 | $ | 925,586 | $ | 918,499 | |||||||||||||||
| Three Months Ended September 30, 2026 | |||||||||||||||||||||||||||||||||||
| Common Stock | |||||||||||||||||||||||||||||||||||
| Par Value | Accumulated | ||||||||||||||||||||||||||||||||||
| and Capital | Other | ||||||||||||||||||||||||||||||||||
| in Excess | Treasury | Retained | Comprehensive | ||||||||||||||||||||||||||||||||
| Shares | of Par | Stock | Earnings | Loss | Total | ||||||||||||||||||||||||||||||
| Balance, June 30, 2026 | 275,393 | $ | 5,865,954 | $ | (6,755,331) | $ | 7,803,492 | $ | (56,152) | $ | 6,857,963 | ||||||||||||||||||||||||
| Net income | — | — | — | 289,747 | — | $ | 289,747 | ||||||||||||||||||||||||||||
| Other comprehensive loss, net of taxes | — | — | — | — | (12,550) | $ | (12,550) | ||||||||||||||||||||||||||||
| Purchase of treasury stock | (1,305) | — | (400,019) | — | — | $ | (400,019) | ||||||||||||||||||||||||||||
| Issuance of common stock and reissuance of treasury stock under equity incentive plans, net of forfeitures | 394 | 47,534 | 2,699 | — | — | $ | 50,233 | ||||||||||||||||||||||||||||
| Stock received for payment of employee taxes on vesting of restricted stock | (103) | (18,979) | (35,907) | — | — | $ | (54,886) | ||||||||||||||||||||||||||||
| Stock-based compensation expense | — | 144,763 | — | — | — | $ | 144,763 | ||||||||||||||||||||||||||||
| Balance, September 30, 2026 | 274,379 | $ | 6,039,272 | $ | (7,188,558) | $ | 8,093,239 | $ | (68,702) | $ | 6,875,251 | ||||||||||||||||||||||||
| Three Months Ended September 30, 2025 | |||||||||||||||||||||||||||||||||||
| Common Stock | |||||||||||||||||||||||||||||||||||
| Par Value | Accumulated | ||||||||||||||||||||||||||||||||||
| and Capital | Other | ||||||||||||||||||||||||||||||||||
| in Excess | Treasury | Retained | Comprehensive | ||||||||||||||||||||||||||||||||
| Shares | of Par | Stock | Earnings | Income | Total | ||||||||||||||||||||||||||||||
| Balance, June 30, 2025 | 272,490 | $ | 4,445,872 | $ | (5,888,804) | $ | 6,425,498 | $ | 23,972 | $ | 5,006,538 | ||||||||||||||||||||||||
| Net income | — | — | — | 287,122 | — | $ | 287,122 | ||||||||||||||||||||||||||||
| Other comprehensive loss, net of taxes | — | — | — | — | (16,673) | $ | (16,673) | ||||||||||||||||||||||||||||
| Purchase of treasury stock | (584) | — | (200,009) | — | — | $ | (200,009) | ||||||||||||||||||||||||||||
| Issuance of common stock and reissuance of treasury stock under equity incentive plans, net of forfeitures | 414 | 55,881 | 3,866 | — | — | $ | 59,747 | ||||||||||||||||||||||||||||
| Stock received for payment of employee taxes on vesting of restricted stock | (119) | (12,596) | (41,200) | — | — | $ | (53,796) | ||||||||||||||||||||||||||||
| Stock-based compensation expense | — | 116,073 | — | — | — | $ | 116,073 | ||||||||||||||||||||||||||||
| Balance, September 30, 2025 | 272,201 | $ | 4,605,230 | $ | (6,126,147) | $ | 6,712,620 | $ | 7,299 | $ | 5,199,002 | ||||||||||||||||||||||||
| Nine Months Ended September 30, 2026 | |||||||||||||||||||||||||||||||||||
| Common Stock | |||||||||||||||||||||||||||||||||||
| Par Value | Accumulated | ||||||||||||||||||||||||||||||||||
| and Capital | Other | ||||||||||||||||||||||||||||||||||
| in Excess | Treasury | Retained | Comprehensive | ||||||||||||||||||||||||||||||||
| Shares | of Par | Stock | Earnings | Loss | Total | ||||||||||||||||||||||||||||||
Balance, December 31, 2025 | 271,799 | $ | 4,719,443 | $ | (6,344,213) | $ | 7,100,756 | $ | (1,805) | $ | 5,474,181 | ||||||||||||||||||||||||
| Net income | — | — | — | 992,483 | — | $ | 992,483 | ||||||||||||||||||||||||||||
Other comprehensive loss, net of taxes | — | — | — | — | (66,897) | $ | (66,897) | ||||||||||||||||||||||||||||
| Purchase of treasury stock | (2,556) | — | (800,025) | — | — | $ | (800,025) | ||||||||||||||||||||||||||||
| Issuance of common stock and reissuance of treasury stock under equity incentive plans, net of forfeitures | 2,143 | 108,146 | 30,927 | — | — | $ | 139,073 | ||||||||||||||||||||||||||||
| Issuance of common stock in a business combination | 3,224 | 902,208 | — | — | — | $ | 902,208 | ||||||||||||||||||||||||||||
| Stock received for payment of employee taxes on vesting of restricted stock | (231) | (120,361) | (75,247) | — | — | $ | (195,608) | ||||||||||||||||||||||||||||
| Stock-based compensation expense | — | 429,836 | — | — | — | $ | 429,836 | ||||||||||||||||||||||||||||
| Balance, September 30, 2026 | 274,379 | $ | 6,039,272 | $ | (7,188,558) | $ | 8,093,239 | $ | (68,702) | $ | 6,875,251 | ||||||||||||||||||||||||
| Nine Months Ended September 30, 2025 | |||||||||||||||||||||||||||||||||||
| Common Stock | |||||||||||||||||||||||||||||||||||
| Par Value | Accumulated | ||||||||||||||||||||||||||||||||||
| and Capital | Other | ||||||||||||||||||||||||||||||||||
| in Excess | Treasury | Retained | Comprehensive | ||||||||||||||||||||||||||||||||
| Shares | of Par | Stock | Earnings | Income (Loss) | Total | ||||||||||||||||||||||||||||||
| Balance, December 31, 2024 | 273,851 | $ | 4,181,737 | $ | (5,309,579) | $ | 5,991,868 | $ | (190,448) | $ | 4,673,578 | ||||||||||||||||||||||||
| Net income | — | — | — | 720,752 | — | $ | 720,752 | ||||||||||||||||||||||||||||
Other comprehensive income, net of taxes | — | — | — | — | 197,747 | $ | 197,747 | ||||||||||||||||||||||||||||
| Purchase of treasury stock | (2,552) | — | (725,025) | — | — | $ | (725,025) | ||||||||||||||||||||||||||||
| Issuance of common stock and reissuance of treasury stock under equity incentive plans, net of forfeitures | 1,221 | 130,484 | 7,585 | — | — | $ | 138,069 | ||||||||||||||||||||||||||||
| Stock received for payment of employee taxes on vesting of restricted stock | (319) | (49,002) | (99,128) | — | — | $ | (148,130) | ||||||||||||||||||||||||||||
| Stock-based compensation expense | — | 342,011 | — | — | — | $ | 342,011 | ||||||||||||||||||||||||||||
| Balance, September 30, 2025 | 272,201 | $ | 4,605,230 | $ | (6,126,147) | $ | 6,712,620 | $ | 7,299 | $ | 5,199,002 | ||||||||||||||||||||||||
| Nine Months Ended | |||||||||||
| September 30, 2026 | September 30, 2025 | ||||||||||
| Cash and cash equivalents at beginning of period | $ | 3,001,317 | $ | 2,644,030 | |||||||
| Cash flows from operating activities: | |||||||||||
| Net income | 992,483 | 720,752 | |||||||||
| Adjustments to reconcile net income to net cash provided by operating activities: | |||||||||||
| Depreciation and amortization | 320,159 | 163,269 | |||||||||
| Stock-based compensation | 429,836 | 342,011 | |||||||||
| Gain on divestitures and investments, net | (88,611) | (22,135) | |||||||||
| Deferred income taxes | 118,684 | 89,756 | |||||||||
| ROU asset amortization and change in operating lease liabilities | (2,105) | 1,702 | |||||||||
| Other non-cash items | 7,266 | 4,713 | |||||||||
| Changes in operating assets and liabilities, net of effect of acquired businesses: | |||||||||||
| Receivables | (84,285) | (90,666) | |||||||||
| Inventories | (172,927) | (60,858) | |||||||||
| Prepaid expenses and other | 39,812 | (14,834) | |||||||||
| Other assets | (38,982) | 5,811 | |||||||||
| Accounts payable and accrued liabilities | (263,024) | (23,237) | |||||||||
| Deferred revenue | 148,835 | 44,456 | |||||||||
| Other long-term liabilities | 7,295 | 14,546 | |||||||||
| Net cash provided by operating activities | 1,414,436 | 1,175,286 | |||||||||
| Cash flows from investing activities: | |||||||||||
| Purchases of investments | (98,481) | (35,182) | |||||||||
| Proceeds from the sale and maturity of investments | 166,529 | 3,493 | |||||||||
Proceeds from the sale of IP and other assets | — | 11,500 | |||||||||
| Purchases of property, plant and equipment | (163,254) | (100,830) | |||||||||
| Purchases of intangible assets | (6,975) | — | |||||||||
| Cash paid in business combinations, net of cash acquired | (2,143,429) | (250,695) | |||||||||
| Net cash used for investing activities | (2,245,610) | (371,714) | |||||||||
| Cash flows from financing activities: | |||||||||||
Proceeds from revolving credit facility | 875,000 | — | |||||||||
| Payments on revolving credit facility | (725,000) | — | |||||||||
| Proceeds from issuance of common stock | 139,073 | 138,069 | |||||||||
| Stock received for payment of employee taxes on vesting of restricted stock | (195,608) | (148,130) | |||||||||
| Payments for repurchases of common stock | (800,025) | (725,025) | |||||||||
| Net cash used for financing activities | (706,560) | (735,086) | |||||||||
| Effect of exchange rate changes on cash and cash equivalents | (11,563) | 40,730 | |||||||||
Increase (decrease) in cash and cash equivalents | (1,549,297) | 109,216 | |||||||||
| Cash and cash equivalents at end of period | $ | 1,452,020 | $ | 2,753,246 | |||||||
| Supplemental cash flow information: | |||||||||||
| Cash paid for interest | $ | 119,991 | $ | 111,711 | |||||||
Cash paid for income taxes, net | 448,605 | 198,770 | |||||||||
| Fair Value | |||||
| (In thousands) | |||||
| Current assets | $ | 267,792 | |||
| Goodwill | 2,170,179 | ||||
| Acquired intangibles | 1,248,000 | ||||
Other assets | 18,330 | ||||
| Total assets acquired | 3,704,301 | ||||
| Current liabilities | 250,767 | ||||
| Long-term liabilities | 329,603 | ||||
| Total liabilities assumed | 580,370 | ||||
| Total purchase consideration | $ | 3,123,931 | |||
| Fair Value | Weighted Average Amortization Period | ||||||||||
| (In thousands) | (in years) | ||||||||||
| Existing technology | $ | 723,000 | 7.9 years | ||||||||
| Agreements and relationships | 507,000 | 7.7 years | |||||||||
| Tradenames, trademarks and patents | 18,000 | 6.0 years | |||||||||
| Total acquired intangibles with definite lives | $ | 1,248,000 | 7.8 years | ||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Pro forma total revenue | $ | 1,633,311 | $ | 1,397,562 | $ | 4,755,577 | $ | 4,073,228 | |||||||||||||||
| Pro forma net income | 289,747 | 265,519 | 978,842 | 666,787 | |||||||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
Core EDA* | 69 | % | 71 | % | 69 | % | 71 | % | |||||||||||||||
Semiconductor IP (“IP”) | 15 | % | 14 | % | 15 | % | 14 | % | |||||||||||||||
| System Design and Analysis | 16 | % | 15 | % | 16 | % | 15 | % | |||||||||||||||
| Total | 100 | % | 100 | % | 100 | % | 100 | % | |||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| Revenue recognized over time | 74 | % | 78 | % | 73 | % | 76 | % | |||||||||||||||
Other recurring revenue | 5 | % | 4 | % | 5 | % | 5 | % | |||||||||||||||
| Recurring revenue | 79 | % | 82 | % | 78 | % | 81 | % | |||||||||||||||
| Up-front revenue | 21 | % | 18 | % | 22 | % | 19 | % | |||||||||||||||
Total revenue | 100 | % | 100 | % | 100 | % | 100 | % | |||||||||||||||
| As of | |||||||||||
| September 30, 2026 | December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Contract assets | $ | 42,523 | $ | 67,764 | |||||||
| Deferred revenue | 1,150,533 | 934,432 | |||||||||
| As of | |||||||||||
| September 30, 2026 | December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Accounts receivable | $ | 560,975 | $ | 492,834 | |||||||
| Unbilled accounts receivable | 553,903 | 455,993 | |||||||||
| Long-term receivables | 60,900 | 52,451 | |||||||||
| Total receivables | 1,175,778 | 1,001,278 | |||||||||
| Less allowance for doubtful accounts | (4,287) | (3,888) | |||||||||
| Total receivables, net | $ | 1,171,491 | $ | 997,390 | |||||||
| September 30, 2026 | December 31, 2025 | ||||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Principal | Unamortized Discount and Issuance Costs | Carrying Value | Principal | Unamortized Discount and Issuance Costs | Carrying Value | ||||||||||||||||||||||||||||||
| 2027 Notes | $ | 500,000 | $ | (1,191) | $ | 498,809 | $ | 500,000 | $ | (2,073) | $ | 497,927 | |||||||||||||||||||||||
| 2029 Notes | 1,000,000 | (6,252) | 993,748 | 1,000,000 | (7,747) | 992,253 | |||||||||||||||||||||||||||||
| 2034 Notes | 1,000,000 | (9,315) | 990,685 | 1,000,000 | (10,030) | 989,970 | |||||||||||||||||||||||||||||
| Total Senior Notes | $ | 2,500,000 | $ | (16,758) | $ | 2,483,242 | $ | 2,500,000 | $ | (19,850) | $ | 2,480,150 | |||||||||||||||||||||||
| Gross Carrying Amount | |||||
| (In thousands) | |||||
| Balance as of December 31, 2025 | $ | 2,749,143 | |||
| Goodwill resulting from acquisitions | 2,219,277 | ||||
| Effect of foreign currency translation | (41,465) | ||||
| Balance as of September 30, 2026 | $ | 4,926,955 | |||
| Gross Carrying Amount | Accumulated Amortization | Acquired Intangibles, Net | |||||||||||||||
| (In thousands) | |||||||||||||||||
| Existing technology | $ | 1,231,440 | $ | (283,816) | $ | 947,624 | |||||||||||
| Agreements and relationships | 993,315 | (190,606) | 802,709 | ||||||||||||||
| Tradenames, trademarks and patents | 56,844 | (15,171) | 41,673 | ||||||||||||||
| Total acquired intangibles | $ | 2,281,599 | $ | (489,593) | $ | 1,792,006 | |||||||||||
| Gross Carrying Amount | Accumulated Amortization | Acquired Intangibles, Net | |||||||||||||||
| (In thousands) | |||||||||||||||||
| Existing technology | $ | 590,211 | $ | (256,589) | $ | 333,622 | |||||||||||
| Agreements and relationships | 470,334 | (114,697) | 355,637 | ||||||||||||||
| Tradenames, trademarks and patents | 40,984 | (12,020) | 28,964 | ||||||||||||||
| Total acquired intangibles | $ | 1,101,529 | $ | (383,306) | $ | 718,223 | |||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Cost of product and maintenance | $ | 46,091 | $ | 15,751 | $ | 122,437 | $ | 46,744 | |||||||||||||||
| Amortization of acquired intangibles | 33,779 | 10,233 | 88,304 | 28,359 | |||||||||||||||||||
| Total amortization of acquired intangibles | $ | 79,870 | $ | 25,984 | $ | 210,741 | $ | 75,103 | |||||||||||||||
| (In thousands) | |||||
| 2026 - remaining period | $ | 78,406 | |||
| 2027 | 294,327 | ||||
| 2028 | 286,974 | ||||
| 2029 | 261,410 | ||||
| 2030 | 216,778 | ||||
| 2031 | 194,034 | ||||
| Thereafter | 460,077 | ||||
| Total estimated amortization expense | $ | 1,792,006 | |||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Cost of product and maintenance | $ | 3,010 | $ | 2,014 | $ | 9,221 | $ | 6,290 | |||||||||||||||
| Cost of services | 3,448 | 2,337 | 10,529 | 7,252 | |||||||||||||||||||
| Marketing and sales | 24,978 | 21,726 | 75,365 | 66,254 | |||||||||||||||||||
| Research and development | 90,484 | 70,204 | 271,143 | 210,481 | |||||||||||||||||||
| General and administrative | 22,843 | 19,792 | 63,578 | 51,734 | |||||||||||||||||||
| Total stock-based compensation expense | $ | 144,763 | $ | 116,073 | $ | 429,836 | $ | 342,011 | |||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Shares repurchased | 1,305 | 584 | 2,556 | 2,552 | |||||||||||||||||||
| Total cost of repurchased shares | $ | 400,019 | $ | 200,009 | $ | 800,025 | $ | 725,025 | |||||||||||||||
Severance and Benefits | Excess Facilities | Total | |||||||||||||||
| (In thousands) | |||||||||||||||||
| Balance as of December 31, 2025 | $ | 14,467 | $ | — | $ | 14,467 | |||||||||||
Restructuring | 41,753 | 49 | 41,802 | ||||||||||||||
Non-cash changes | — | (49) | (49) | ||||||||||||||
| Cash payments | (13,525) | — | (13,525) | ||||||||||||||
| Effect of foreign currency translation | (296) | — | (296) | ||||||||||||||
| Balance as of September 30, 2026 | $ | 42,399 | $ | — | $ | 42,399 | |||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Interest income | $ | 9,215 | $ | 24,627 | $ | 37,417 | $ | 76,827 | |||||||||||||||
Gain on sale of IP and other assets | — | — | — | 11,500 | |||||||||||||||||||
| Gain (loss) on investments | 2,794 | (14,519) | 88,611 | 10,635 | |||||||||||||||||||
| Gain (loss) on securities in Nonqualified Deferred Compensation (“NQDC”) trust | (42) | 5,760 | 8,562 | 11,965 | |||||||||||||||||||
| Loss on foreign exchange | (1,675) | (19,006) | (1,206) | (22,369) | |||||||||||||||||||
| Other income (expense), net | (298) | (434) | 52 | (1,082) | |||||||||||||||||||
| Total other income (expense), net | $ | 9,994 | $ | (3,572) | $ | 133,436 | $ | 87,476 | |||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands, except per share amounts) | |||||||||||||||||||||||
| Net income | $ | 289,747 | $ | 287,122 | $ | 992,483 | $ | 720,752 | |||||||||||||||
| Weighted average common shares used to calculate basic net income per share | 273,748 | 271,152 | 273,260 | 271,471 | |||||||||||||||||||
| Stock-based awards | 1,530 | 2,646 | 1,801 | 1,969 | |||||||||||||||||||
| Weighted average common shares used to calculate diluted net income per share | 275,278 | 273,798 | 275,061 | 273,440 | |||||||||||||||||||
| Net income per share - basic | $ | 1.06 | $ | 1.06 | $ | 3.63 | $ | 2.65 | |||||||||||||||
| Net income per share - diluted | $ | 1.05 | $ | 1.05 | $ | 3.61 | $ | 2.64 | |||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
Market-based awards | 1,527 | 1,501 | 1,530 | 1,053 | |||||||||||||||||||
| Options to purchase shares of common stock | 172 | 197 | 124 | 212 | |||||||||||||||||||
| Non-vested shares of restricted stock | 36 | 18 | 408 | 77 | |||||||||||||||||||
| Total potential common shares excluded | 1,735 | 1,716 | 2,062 | 1,342 | |||||||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Net gains (losses) recognized on equity securities | $ | 2,928 | $ | (14,480) | $ | 88,998 | $ | 10,730 | |||||||||||||||
| Less: Net gains recognized on equity securities sold | (1,780) | — | (81,580) | — | |||||||||||||||||||
| Net gains (losses) recognized on equity securities still held | $ | 1,148 | $ | (14,480) | $ | 7,418 | $ | 10,730 | |||||||||||||||
| As of September 30, 2026 | |||||||||||||||||||||||
| Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Estimated Fair Value | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
Available-for-sale debt securities | |||||||||||||||||||||||
| Mortgage-backed and asset-backed securities | $ | 82,767 | $ | 21 | $ | (2,125) | $ | 80,663 | |||||||||||||||
| Total available-for-sale securities | $ | 82,767 | $ | 21 | $ | (2,125) | $ | 80,663 | |||||||||||||||
| As of December 31, 2025 | |||||||||||||||||||||||
| Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Estimated Fair Value | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
Available-for-sale debt securities | |||||||||||||||||||||||
| Mortgage-backed and asset-backed securities | $ | 70,317 | $ | 852 | $ | (199) | $ | 70,970 | |||||||||||||||
| Total available-for-sale securities | $ | 70,317 | $ | 852 | $ | (199) | $ | 70,970 | |||||||||||||||
| (In thousands) | |||||
Due within 1 year | $ | 757 | |||
| Due after 1 year through 5 years | 24,609 | ||||
| Due after 5 years through 10 years | 27,785 | ||||
| Due after 10 years | 27,512 | ||||
| Total | $ | 80,663 | |||
| Fair Value Measurements as of September 30, 2026 | |||||||||||||||||||||||
| Total | Level 1 | Level 2 | Level 3 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Assets | |||||||||||||||||||||||
| Cash equivalents: | |||||||||||||||||||||||
| Money market funds | $ | 561,694 | $ | 561,694 | $ | — | $ | — | |||||||||||||||
| Marketable securities: | |||||||||||||||||||||||
| Marketable equity securities | 10,530 | 10,530 | — | — | |||||||||||||||||||
| Mortgage-backed and asset-backed securities | 80,663 | — | 80,663 | — | |||||||||||||||||||
Securities held in NQDC trust | 131,956 | 131,956 | — | — | |||||||||||||||||||
| Total Assets | $ | 784,843 | $ | 704,180 | $ | 80,663 | $ | — | |||||||||||||||
| Total | Level 1 | Level 2 | Level 3 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Liabilities | |||||||||||||||||||||||
| Foreign currency exchange contracts | $ | 7,284 | $ | — | $ | 7,284 | $ | — | |||||||||||||||
| Total Liabilities | $ | 7,284 | $ | — | $ | 7,284 | $ | — | |||||||||||||||
| Fair Value Measurements as of December 31, 2025 | |||||||||||||||||||||||
| Total | Level 1 | Level 2 | Level 3 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Assets | |||||||||||||||||||||||
| Cash equivalents: | |||||||||||||||||||||||
| Money market funds | $ | 2,100,210 | $ | 2,100,210 | $ | — | $ | — | |||||||||||||||
| Marketable securities: | |||||||||||||||||||||||
| Marketable equity securities | 83,244 | 83,244 | — | — | |||||||||||||||||||
| Mortgage-backed and asset-backed securities | 70,970 | — | 70,970 | — | |||||||||||||||||||
| Securities held in NQDC trust | 117,732 | 117,732 | — | — | |||||||||||||||||||
| Total Assets | $ | 2,372,156 | $ | 2,301,186 | $ | 70,970 | $ | — | |||||||||||||||
| Total | Level 1 | Level 2 | Level 3 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Liabilities | |||||||||||||||||||||||
| Foreign currency exchange contracts | $ | 25,999 | $ | — | $ | 25,999 | $ | — | |||||||||||||||
| Total Liabilities | $ | 25,999 | $ | — | $ | 25,999 | $ | — | |||||||||||||||
| As of | |||||||||||
| September 30, 2026 | December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Inventories: | |||||||||||
| Raw materials | $ | 323,029 | $ | 245,487 | |||||||
Work-in-process | 991 | 14,665 | |||||||||
| Finished goods | 124,804 | 43,393 | |||||||||
Inventories | $ | 448,824 | $ | 303,545 | |||||||
| Other assets: | |||||||||||
| Long-term investments | $ | 145,037 | $ | 67,517 | |||||||
| ROU lease assets | 221,483 | 175,964 | |||||||||
| Other long-term assets | 393,140 | 337,891 | |||||||||
| Other assets | $ | 759,660 | $ | 581,372 | |||||||
Other long-term liabilities: | |||||||||||
| Operating lease liabilities | $ | 179,275 | $ | 136,289 | |||||||
Deferred income taxes | 347,500 | 47,997 | |||||||||
Other accrued liabilities | 233,608 | 223,243 | |||||||||
| Other long-term liabilities | $ | 760,383 | $ | 407,529 | |||||||
| As of | |||||||||||
| September 30, 2026 | December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
Foreign currency translation gains (losses) | $ | (50,216) | $ | 14,266 | |||||||
| Changes in defined benefit plan liabilities | (10,571) | (10,293) | |||||||||
Unrealized losses on derivatives designated as hedging instruments | (5,811) | (6,431) | |||||||||
| Unrealized gains (losses) on available-for-sale debt securities | (2,104) | 653 | |||||||||
Total accumulated other comprehensive loss | $ | (68,702) | $ | (1,805) | |||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
Revenue | $ | 1,633,311 | $ | 1,338,838 | $ | 4,691,982 | $ | 3,856,645 | |||||||||||||||
Costs and Expenses: | |||||||||||||||||||||||
| Salary, benefits and other employee-related costs | 613,263 | 511,603 | 1,810,473 | 1,575,868 | |||||||||||||||||||
| Stock-based compensation | 144,763 | 116,073 | 429,836 | 342,011 | |||||||||||||||||||
Manufacturing costs | 104,809 | 90,504 | 320,136 | 273,653 | |||||||||||||||||||
Facilities and other infrastructure costs | 65,725 | 49,960 | 178,726 | 141,075 | |||||||||||||||||||
Depreciation and amortization | 118,548 | 56,677 | 320,159 | 163,269 | |||||||||||||||||||
Professional services | 69,689 | 47,584 | 187,445 | 117,727 | |||||||||||||||||||
Loss related to contingent liability(1) | — | — | — | 128,545 | |||||||||||||||||||
Restructuring | 42,159 | 27,394 | 41,802 | 27,332 | |||||||||||||||||||
Other segment items(2) | 44,860 | 41,852 | (2,974) | 47,809 | |||||||||||||||||||
| Interest income | (9,215) | (24,627) | (37,417) | (76,827) | |||||||||||||||||||
| Interest expense | 30,375 | 29,035 | 97,124 | 87,101 | |||||||||||||||||||
| Provision for income taxes | 118,588 | 105,661 | 354,189 | 308,330 | |||||||||||||||||||
| Net income | $ | 289,747 | $ | 287,122 | $ | 992,483 | $ | 720,752 | |||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Americas: | |||||||||||||||||||||||
| United States | $ | 674,093 | $ | 532,119 | $ | 1,930,985 | $ | 1,692,351 | |||||||||||||||
| Other Americas | 35,632 | 43,002 | 113,246 | 111,686 | |||||||||||||||||||
| Total Americas | 709,725 | 575,121 | 2,044,231 | 1,804,037 | |||||||||||||||||||
| Asia: | |||||||||||||||||||||||
| China | 255,139 | 245,015 | 680,715 | 505,113 | |||||||||||||||||||
| Japan | 107,138 | 86,430 | 304,522 | 240,557 | |||||||||||||||||||
| Other Asia | 312,375 | 242,721 | 928,853 | 721,458 | |||||||||||||||||||
| Total Asia | 674,652 | 574,166 | 1,914,090 | 1,467,128 | |||||||||||||||||||
Europe, Middle East and Africa (“EMEA”) | 248,934 | 189,551 | 733,661 | 585,480 | |||||||||||||||||||
| Total | $ | 1,633,311 | $ | 1,338,838 | $ | 4,691,982 | $ | 3,856,645 | |||||||||||||||
| As of | |||||||||||
| September 30, 2026 | December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Americas: | |||||||||||
| United States | $ | 526,927 | $ | 439,902 | |||||||
| Other Americas | 11,600 | 10,114 | |||||||||
| Total Americas | 538,527 | 450,016 | |||||||||
| Asia: | |||||||||||
| China | 20,631 | 23,014 | |||||||||
India | 131,260 | 92,470 | |||||||||
Japan | 9,622 | 4,079 | |||||||||
| Other Asia | 14,581 | 18,374 | |||||||||
| Total Asia | 176,094 | 137,937 | |||||||||
| EMEA | 110,051 | 105,015 | |||||||||
| Total | $ | 824,672 | $ | 692,968 | |||||||
| Three Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| Product and maintenance | $ | 1,487.3 | $ | 1,207.7 | $ | 279.6 | 23 | % | |||||||||||||||
| Services | 146.0 | 131.1 | 14.9 | 11 | % | ||||||||||||||||||
| Total revenue | $ | 1,633.3 | $ | 1,338.8 | $ | 294.5 | 22 | % | |||||||||||||||
| Nine Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| Product and maintenance | $ | 4,266.9 | $ | 3,489.0 | $ | 777.9 | 22 | % | |||||||||||||||
| Services | 425.1 | 367.6 | 57.5 | 16 | % | ||||||||||||||||||
| Total revenue | $ | 4,692.0 | $ | 3,856.6 | $ | 835.4 | 22 | % | |||||||||||||||
| Three Months Ended | |||||||||||||||||||||||||||||
| September 30, 2026 | June 30, 2026 | March 31, 2026 | December 31, 2025 | September 30, 2025 | |||||||||||||||||||||||||
Core EDA | 69 | % | 68 | % | 71 | % | 69 | % | 71 | % | |||||||||||||||||||
Semiconductor IP | 15 | % | 15 | % | 14 | % | 15 | % | 14 | % | |||||||||||||||||||
| System Design and Analysis | 16 | % | 17 | % | 15 | % | 16 | % | 15 | % | |||||||||||||||||||
| Total | 100 | % | 100 | % | 100 | % | 100 | % | 100 | % | |||||||||||||||||||
| Three Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| United States | $ | 674.1 | $ | 532.1 | $ | 142.0 | 27 | % | |||||||||||||||
| Other Americas | 35.6 | 43.0 | (7.4) | (17) | % | ||||||||||||||||||
| China | 255.2 | 245.0 | 10.2 | 4 | % | ||||||||||||||||||
| Japan | 107.1 | 86.4 | 20.7 | 24 | % | ||||||||||||||||||
| Other Asia | 312.4 | 242.7 | 69.7 | 29 | % | ||||||||||||||||||
Europe, Middle East and Africa (“EMEA”) | 248.9 | 189.6 | 59.3 | 31 | % | ||||||||||||||||||
| Total revenue | $ | 1,633.3 | $ | 1,338.8 | $ | 294.5 | 22 | % | |||||||||||||||
| Nine Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| United States | $ | 1,931.0 | $ | 1,692.3 | $ | 238.7 | 14 | % | |||||||||||||||
| Other Americas | 113.2 | 111.7 | 1.5 | 1 | % | ||||||||||||||||||
| China | 680.7 | 505.1 | 175.6 | 35 | % | ||||||||||||||||||
| Japan | 304.5 | 240.5 | 64.0 | 27 | % | ||||||||||||||||||
| Other Asia | 928.9 | 721.5 | 207.4 | 29 | % | ||||||||||||||||||
EMEA | 733.7 | 585.5 | 148.2 | 25 | % | ||||||||||||||||||
| Total revenue | $ | 4,692.0 | $ | 3,856.6 | $ | 835.4 | 22 | % | |||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| United States | 41 | % | 40 | % | 41 | % | 44 | % | |||||||||||||||
| Other Americas | 2 | % | 3 | % | 2 | % | 3 | % | |||||||||||||||
| China | 16 | % | 18 | % | 15 | % | 13 | % | |||||||||||||||
| Japan | 7 | % | 7 | % | 6 | % | 6 | % | |||||||||||||||
| Other Asia | 19 | % | 18 | % | 20 | % | 19 | % | |||||||||||||||
| EMEA | 15 | % | 14 | % | 16 | % | 15 | % | |||||||||||||||
| Total | 100 | % | 100 | % | 100 | % | 100 | % | |||||||||||||||
| Three Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| Cost of product and maintenance | $ | 173.9 | $ | 118.7 | $ | 55.2 | 47 | % | |||||||||||||||
| Cost of services | 61.8 | 63.5 | (1.7) | (3) | % | ||||||||||||||||||
| Nine Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| Cost of product and maintenance | $ | 502.4 | $ | 374.7 | $ | 127.7 | 34 | % | |||||||||||||||
| Cost of services | 187.1 | 158.8 | 28.3 | 18 | % | ||||||||||||||||||
| Three Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| Product and maintenance-related costs | $ | 127.8 | $ | 102.9 | $ | 24.9 | 24 | % | |||||||||||||||
| Amortization of acquired intangibles | 46.1 | 15.8 | 30.3 | 192 | % | ||||||||||||||||||
| Total cost of product and maintenance | $ | 173.9 | $ | 118.7 | $ | 55.2 | 47 | % | |||||||||||||||
| Nine Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| Product and maintenance-related costs | $ | 380.0 | $ | 328.0 | $ | 52.0 | 16 | % | |||||||||||||||
| Amortization of acquired intangibles | 122.4 | 46.7 | 75.7 | 162 | % | ||||||||||||||||||
| Total cost of product and maintenance | $ | 502.4 | $ | 374.7 | $ | 127.7 | 34 | % | |||||||||||||||
| Change | |||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||
| (In millions) | |||||||||||
| Hardware product costs | $ | 18.5 | $ | 37.0 | |||||||
| Salary, benefits and other employee-related costs | 4.2 | 8.5 | |||||||||
| Other items | 2.2 | 6.5 | |||||||||
| Total change in product and maintenance-related costs | $ | 24.9 | $ | 52.0 | |||||||
| Three Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| Marketing and sales | $ | 242.5 | $ | 192.6 | $ | 49.9 | 26 | % | |||||||||||||||
| Research and development | 537.5 | 423.0 | 114.5 | 27 | % | ||||||||||||||||||
| General and administrative | 113.0 | 78.0 | 35.0 | 45 | % | ||||||||||||||||||
| Total operating expenses | $ | 893.0 | $ | 693.6 | $ | 199.4 | 29 | % | |||||||||||||||
| Nine Months Ended | Change | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | Amount | Percentage | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| Marketing and sales | $ | 695.0 | $ | 595.9 | $ | 99.1 | 17 | % | |||||||||||||||
| Research and development | 1,577.3 | 1,304.2 | 273.1 | 21 | % | ||||||||||||||||||
| General and administrative | 289.8 | 210.2 | 79.6 | 38 | % | ||||||||||||||||||
| Total operating expenses | $ | 2,562.1 | $ | 2,110.3 | $ | 451.8 | 21 | % | |||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| Marketing and sales | 15 | % | 14 | % | 15 | % | 15 | % | |||||||||||||||
| Research and development | 33 | % | 32 | % | 34 | % | 35 | % | |||||||||||||||
| General and administrative | 7 | % | 6 | % | 6 | % | 5 | % | |||||||||||||||
| Total operating expenses | 55 | % | 52 | % | 55 | % | 55 | % | |||||||||||||||
| Change | |||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||
| (In millions) | |||||||||||
| Salary, benefits and other employee-related costs | $ | 30.5 | $ | 62.8 | |||||||
Professional services | 8.1 | 16.5 | |||||||||
| Facilities and other infrastructure costs | 3.0 | 5.1 | |||||||||
| Stock-based compensation | 3.3 | 9.1 | |||||||||
| Other items | 5.0 | 5.6 | |||||||||
| Total change in marketing and sales expense | $ | 49.9 | $ | 99.1 | |||||||
| Change | |||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||
| (In millions) | |||||||||||
| Salary, benefits and other employee-related costs | $ | 57.8 | $ | 145.8 | |||||||
| Stock-based compensation | 20.3 | 60.7 | |||||||||
| Facilities and other infrastructure costs | 12.3 | 29.1 | |||||||||
| Professional services | 21.6 | 36.5 | |||||||||
| Other items | 2.5 | 1.0 | |||||||||
| Total change in research and development expense | $ | 114.5 | $ | 273.1 | |||||||
| Change | |||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||
| (In millions) | |||||||||||
| Contributions to non-profit organizations | $ | 25.4 | $ | 25.1 | |||||||
| Professional services | (8.2) | 15.7 | |||||||||
| Salary, benefits and other employee-related costs | 9.0 | 14.5 | |||||||||
| Stock-based compensation | 3.1 | 11.8 | |||||||||
| Facilities and other infrastructure costs | 2.9 | 8.9 | |||||||||
| Other items | 2.8 | 3.6 | |||||||||
| Total change in general and administrative expense | $ | 35.0 | $ | 79.6 | |||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| Operating margin | 26 | % | 32 | % | 28 | % | 27 | % | |||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In millions) | |||||||||||||||||||||||
| Contractual cash interest expense: | |||||||||||||||||||||||
Senior Notes | $ | 27.8 | $ | 27.8 | $ | 83.3 | $ | 83.3 | |||||||||||||||
Revolving Credit Facility | 1.3 | 0.3 | 9.4 | 0.7 | |||||||||||||||||||
Amortization of debt discount and debt issuance costs: | |||||||||||||||||||||||
Senior Notes | 1.0 | 1.2 | 3.0 | 3.6 | |||||||||||||||||||
Revolving Credit Facility | 0.1 | 0.1 | 0.2 | 0.2 | |||||||||||||||||||
| Other | 0.2 | (0.4) | 1.2 | (0.7) | |||||||||||||||||||
| Total interest expense | $ | 30.4 | $ | 29.0 | $ | 97.1 | $ | 87.1 | |||||||||||||||
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 30, 2026 | September 30, 2025 | September 30, 2026 | September 30, 2025 | ||||||||||||||||||||
| (In millions, except percentages) | |||||||||||||||||||||||
| Provision for income taxes | $ | 118.6 | $ | 105.7 | $ | 354.2 | $ | 308.3 | |||||||||||||||
| Effective tax rate | 29.0 | % | 26.9 | % | 26.3 | % | 30.0 | % | |||||||||||||||
| As of | |||||||||||||||||
| September 30, 2026 | December 31, 2025 | Change | |||||||||||||||
| (In millions) | |||||||||||||||||
| Cash and cash equivalents | $ | 1,452.0 | $ | 3,001.3 | $ | (1,549.3) | |||||||||||
| Net working capital | 887.4 | 3,034.4 | (2,147.0) | ||||||||||||||
| Nine Months Ended | |||||||||||||||||
| September 30, 2026 | September 30, 2025 | Change | |||||||||||||||
| (In millions) | |||||||||||||||||
| Cash provided by operating activities | $ | 1,414.4 | $ | 1,175.3 | $ | 239.1 | |||||||||||
| Nine Months Ended | |||||||||||||||||
| September 30, 2026 | September 30, 2025 | Change | |||||||||||||||
| (In millions) | |||||||||||||||||
| Cash used for investing activities | $ | (2,245.6) | $ | (371.7) | $ | (1,873.9) | |||||||||||
| Nine Months Ended | |||||||||||||||||
| September 30, 2026 | September 30, 2025 | Change | |||||||||||||||
| (In millions) | |||||||||||||||||
| Cash used for financing activities | $ | (706.6) | $ | (735.1) | $ | 28.5 | |||||||||||
| Notional Principal | Weighted Average Contract Rate | ||||||||||
| (In millions) | |||||||||||
| Forward Contracts: | |||||||||||
European Union euro | $ | 263.8 | 0.87 | ||||||||
| Japanese yen | 150.3 | 158.03 | |||||||||
| Chinese renminbi | 146.8 | 6.69 | |||||||||
| British pound | 129.4 | 0.74 | |||||||||
| Israeli shekel | 84.0 | 3.01 | |||||||||
| Indian rupee | 76.6 | 96.08 | |||||||||
| Swedish krona | 46.1 | 9.57 | |||||||||
| Canadian dollar | 44.8 | 1.39 | |||||||||
| Australian dollar | 13.9 | 1.41 | |||||||||
| Taiwan dollar | 8.1 | 31.90 | |||||||||
| Brazilian real | 6.9 | 5.20 | |||||||||
| Swiss franc | 6.8 | 0.80 | |||||||||
| Polish zloty | 3.3 | 3.73 | |||||||||
| Singapore dollar | 3.0 | 1.27 | |||||||||
South Korean won | 1.9 | 1,387.98 | |||||||||
| Total | $ | 985.7 | |||||||||
| Estimated fair value | $ | (7.3) | |||||||||
| Period | Total Number of Shares Purchased (1) | Average Price Paid Per Share (2) | Total Number of Shares Purchased as Part of Publicly Announced Plan or Program (3) | Approximate Dollar Value of Shares that May Yet Be Purchased Under Publicly Announced Plan or Program (1) (In millions) | ||||||||||||||||||||||
| July 1, 2026 - July 31, 2026 | 248,197 | $ | 359.82 | 187,053 | $ | 935 | ||||||||||||||||||||
| August 1, 2026 - August 31, 2026 | 235,197 | $ | 328.57 | 202,313 | $ | 868 | ||||||||||||||||||||
| September 1, 2026 - September 30, 2026 | 924,897 | $ | 291.19 | 915,286 | $ | 602 | ||||||||||||||||||||
| Total | 1,408,291 | $ | 309.53 | 1,304,652 | ||||||||||||||||||||||
| Type of Trading Arrangement | ||||||||||||||||||||||||||||||||
| Name and Position | Action | Adoption/ Termination Date | Rule 10b5-1* | Total Shares of Common Stock to be Sold | Expiration Date | |||||||||||||||||||||||||||
Chin-Chi Teng, Senior Vice President and General Manager of the Digital and Signoff Group | Adoption(1) | 8/20/2026 | X | Up to 14,000 | 2/28/2027 | |||||||||||||||||||||||||||
| * Contract, instruction or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. | ||||||||||||||||||||||||||||||||
| Incorporated by Reference | ||||||||||||||||||||||||||||||||||||||
Exhibit Number | Exhibit Title | Form | File No. | Exhibit No. | Filing Date | Provided Herewith | ||||||||||||||||||||||||||||||||
8-K | 000-15867 | 3.1 | 5/6/2024 | |||||||||||||||||||||||||||||||||||
8-K | 000-15867 | 3.1 | 11/3/2023 | |||||||||||||||||||||||||||||||||||
| * | X | |||||||||||||||||||||||||||||||||||||
| * | X | |||||||||||||||||||||||||||||||||||||
| † | X | |||||||||||||||||||||||||||||||||||||
| † | X | |||||||||||||||||||||||||||||||||||||
| 101.INS | * | Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. | ||||||||||||||||||||||||||||||||||||
| 101.SCH | * | Inline XBRL Taxonomy Extension Schema Document. | X | |||||||||||||||||||||||||||||||||||
| 101.CAL | * | Inline XBRL Taxonomy Extension Calculation Linkbase Document. | X | |||||||||||||||||||||||||||||||||||
| 101.DEF | * | Inline XBRL Definition Linkbase Document. | X | |||||||||||||||||||||||||||||||||||
| 101.LAB | * | Inline XBRL Taxonomy Extension Label Linkbase Document. | X | |||||||||||||||||||||||||||||||||||
| 101.PRE | * | Inline XBRL Taxonomy Extension Presentation Linkbase Document. | X | |||||||||||||||||||||||||||||||||||
| 104 | Cover Page Interactive Data File - The cover page from this Quarterly Report on Form 10-Q is formatted in Inline XBRL (included as Exhibit 101). | X | ||||||||||||||||||||||||||||||||||||
| * | Filed herewith. | |||||||
| † | Furnished herewith. | |||||||
| CADENCE DESIGN SYSTEMS, INC. (Registrant) | |||||||||||||||||
| DATE: | October 27, 2026 | By: | /s/ Anirudh Devgan | ||||||||||||||
| Anirudh Devgan | |||||||||||||||||
| President and Chief Executive Officer | |||||||||||||||||
| DATE: | October 27, 2026 | By: | /s/ John M. Wall | ||||||||||||||
| John M. Wall | |||||||||||||||||
| Senior Vice President and Chief Financial Officer | |||||||||||||||||
| By: | /s/ Anirudh Devgan | ||||||||||
Anirudh Devgan | |||||||||||
| President and Chief Executive Officer | |||||||||||
| (Principal Executive Officer) | |||||||||||
| By: | /s/ John M. Wall | ||||||||||
| John M. Wall | |||||||||||
| Senior Vice President and Chief Financial Officer | |||||||||||
| (Principal Accounting and Financial Officer) | |||||||||||
| /s/ Anirudh Devgan | |||||||||||
| Anirudh Devgan | |||||||||||
| President and Chief Executive Officer | |||||||||||
| (Principal Executive Officer) | |||||||||||
| Date: | October 27, 2026 | ||||||||||
| /s/ John M. Wall | |||||||||||
| John M. Wall | |||||||||||
| Senior Vice President and Chief Financial Officer | |||||||||||
| (Principal Accounting and Financial Officer) | |||||||||||
| Date: | October 27, 2026 | ||||||||||