| CASH EQUIVALENTS AND MARKETABLE SECURITIES |
CASH EQUIVALENTS AND MARKETABLE SECURITIES Cash equivalents and marketable securities consisted of the following: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2026 | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | | Cash Equivalents | | Marketable Securities | | | | | | | | | | | | | | | | | | (In thousands) | | Money market funds | $ | 44,150 | | | $ | — | | | $ | — | | | $ | 44,150 | | | $ | 44,150 | | | $ | — | | | | | | | | | | | | | | | | | | | Commercial paper | 13,434 | | | — | | | (29) | | | 13,405 | | | — | | | 13,405 | | | | | Corporate notes and bonds | 241,120 | | | 31 | | | (1,671) | | | 239,480 | | | — | | | 239,480 | | | | | U.S. Treasuries | 84,150 | | | — | | | (33) | | | 84,117 | | | 19,970 | | | 64,147 | | | | | U.S. Government agency securities | 241,808 | | | — | | | (1,659) | | | 240,149 | | | 6,000 | | | 234,149 | | | | | Total | $ | 624,662 | | | $ | 31 | | | $ | (3,392) | | | $ | 621,301 | | | $ | 70,120 | | | $ | 551,181 | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2025 | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | | Cash Equivalents | | Marketable Securities | | | | | | | | | | | | | | | | | | (In thousands) | | | | Money market funds | $ | 186,677 | | | $ | — | | | $ | — | | | $ | 186,677 | | | $ | 186,677 | | | $ | — | | | | | Certificates of deposit | 14,506 | | | 9 | | | — | | | 14,515 | | | — | | | 14,515 | | | | | Commercial paper | 27,886 | | | 9 | | | (2) | | | 27,893 | | | 14,985 | | | 12,908 | | | | | Corporate notes and bonds | 371,895 | | | 1,493 | | | (5) | | | 373,383 | | | — | | | 373,383 | | | | | U.S. Treasuries | 93,613 | | | 26 | | | — | | | 93,639 | | | 29,885 | | | 63,754 | | | | | U.S. Government agency securities | 572,311 | | | 1,669 | | | (4) | | | 573,976 | | | — | | | 573,976 | | | | | Total | $ | 1,266,888 | | | $ | 3,206 | | | $ | (11) | | | $ | 1,270,083 | | | $ | 231,547 | | | $ | 1,038,536 | | | |
The following table summarizes the contractual maturities of the Company’s cash equivalents and marketable securities as of September 30, 2026: | | | | | | | | | | | | | Amortized Cost | | Fair Value | | | | | | (In thousands) | | Due within one year | $ | 375,900 | | | $ | 375,274 | | | Due within one to three years | 248,762 | | | 246,027 | | | Total | $ | 624,662 | | | $ | 621,301 | |
All available-for-sale securities have been classified as current based on management's intent and ability to use the funds in current operations. As of September 30, 2026, the Company also holds equity securities measured at fair value with changes in fair value recognized in Other income (expense), net. Refer to Note 18, “Related Party Transactions” for additional information. | | | | | | | | | | | | | | | | | | | | | | | | | Cost basis | | Decrease in fair value | | Fair value | | Marketable Securities | | | | | | | | | | (In thousands) | | Equity securities — SunPower common stock | $ | 490 | | | $ | (223) | | | $ | 267 | | | $ | 267 | |
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