Investments (Tables)
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3 Months Ended |
Apr. 30, 2026 |
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| Investments, Debt and Equity Securities [Abstract] |
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| Schedule of Marketable Securities |
As of April 30, 2026 and January 31, 2026, our marketable securities consisted of the following: | | | | | | | | | | | | | | | | | | | | | | | | | As of April 30, 2026 | | Amortized
Cost | | Gross
Unrealized
Gains | | Gross
Unrealized
Losses | | Estimated
Fair
Value | | | | | | | | | | (in thousands) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | U.S. government agency securities | $ | 5,598,728 | | | $ | 3,650 | | | $ | (11,962) | | | $ | 5,590,416 | | | Agency bonds | 1,198,350 | | | 234 | | | (3,431) | | | 1,195,153 | | | | | | | | | | | Treasury bills | 44,474 | | | — | | | (6) | | | 44,468 | | | | | | | | | | | Marketable securities | $ | 6,841,552 | | | $ | 3,884 | | | $ | (15,399) | | | $ | 6,830,037 | |
| | | | | | | | | | | | | | | | | | | | | | | | | As of January 31, 2026 | | Amortized
Cost | | Gross
Unrealized
Gains | | Gross
Unrealized
Losses | | Estimated
Fair
Value | | | | | | | | | | (in thousands) | | | | | | | | | | | | | | | | | | U.S. government agency securities | $ | 5,373,782 | | | $ | 11,094 | | | $ | (989) | | | $ | 5,383,887 | | | Agency bonds | 1,095,004 | | | 1,032 | | | (565) | | | 1,095,471 | | | | | | | | | | | Treasury bills | 64,671 | | | 5 | | | (3) | | | 64,673 | | | | | | | | | | | Marketable securities | $ | 6,533,457 | | | $ | 12,131 | | | $ | (1,557) | | | $ | 6,544,031 | |
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| Schedule of Contractual Maturities of Marketable Securities |
The following table presents the contractual maturities of our marketable securities as of April 30, 2026 and January 31, 2026: | | | | | | | | | | | | | As of | | April 30, 2026 | | January 31, 2026 | | | | | | (in thousands) | | Less than one year | $ | 3,118,570 | | | $ | 3,168,258 | | | Due in one to five years | 3,711,467 | | | 3,375,773 | | | Total | $ | 6,830,037 | | | $ | 6,544,031 | |
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| Schedule of Strategic Investments |
Strategic investments by type and measurement category as of April 30, 2026 were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | Measurement Category | | Fair Value | | Measurement Alternative | | Equity Method | | Total | | | | | | | | | | (in thousands) | | Equity securities | $ | — | | | $ | 1,748,737 | | | $ | 123,704 | | | $ | 1,872,441 | | | Debt securities | 3,978 | | | — | | | — | | | 3,978 | | | Strategic investments | $ | 3,978 | | | $ | 1,748,737 | | | $ | 123,704 | | | $ | 1,876,419 | |
Strategic investments by type and measurement category as of January 31, 2026 were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | Measurement Category | | Fair Value | | Measurement Alternative | | Equity Method | | Total | | | | | | | | | | (in thousands) | | Equity securities | $ | — | | | $ | 1,448,531 | | | $ | 126,112 | | | $ | 1,574,643 | | | Debt securities | 3,968 | | | — | | | — | | | 3,968 | | | Strategic investments | $ | 3,968 | | | $ | 1,448,531 | | | $ | 126,112 | | | $ | 1,578,611 | |
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