| Schedule of Short-Term Investments |
As of April 30, 2026, short-term investments consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | Amortized cost | | Gross unrealized gains | | Gross unrealized losses | | Estimated fair value | | Available-for-sale securities: | | | | | | | | Certificates of deposit | $ | 27,710 | | | $ | — | | | $ | (41) | | | $ | 27,669 | | | Asset-backed securities | 204,923 | | | 1,091 | | | (48) | | | 205,966 | | | Commercial paper | 44,755 | | | 1 | | | (3) | | | 44,753 | | | Corporate notes and bonds | 3,293,436 | | | 7,838 | | | (11,568) | | | 3,289,706 | | | Foreign government bonds | 219,830 | | | 511 | | | (645) | | | 219,696 | | Municipal securities | 41,453 | | | 75 | | | (72) | | | 41,456 | | | U.S. agency obligations | 1,484 | | | 4 | | | — | | | 1,488 | | | U.S. treasury securities | 1,590,298 | | | 1,070 | | | (5,963) | | | 1,585,405 | | | Total available-for-sale securities | $ | 5,423,889 | | | $ | 10,590 | | | $ | (18,340) | | | $ | 5,416,139 | | | | | | | | | |
As of January 31, 2026, short-term investments consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | Amortized cost | | Gross unrealized gains | | Gross unrealized losses | | Estimated fair value | | Available-for-sale securities: | | | | | | | | Certificates of deposit | $ | 27,710 | | | $ | — | | | $ | (20) | | | $ | 27,690 | | | Asset-backed securities | 260,136 | | | 1,912 | | | (131) | | | 261,917 | | | Commercial paper | 75,367 | | | 8 | | | — | | | 75,375 | | | Corporate notes and bonds | 3,133,825 | | | 21,684 | | | (950) | | | 3,154,559 | | | Foreign government bonds | 232,271 | | | 1,206 | | | (76) | | | 233,401 | | Municipal securities | 37,231 | | | 222 | | | — | | | 37,453 | | | U.S. agency obligations | 11,699 | | | 21 | | | — | | | 11,720 | | | U.S. treasury securities | 1,332,382 | | | 5,443 | | | (359) | | | 1,337,466 | | | Total available-for-sale securities | $ | 5,110,621 | | | $ | 30,496 | | | $ | (1,536) | | | $ | 5,139,581 | | | | | | | | | |
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| Schedule of Estimated Fair Value of Short-Term Investments, Designated as Available-for-Sale and Classified by Contractual Maturity |
The following table summarizes the estimated fair value of our short-term investments, designated as available-for-sale and classified by the contractual maturity date of the securities as of the dates shown (in thousands): | | | | | | | | | | | | | | | April 30, 2026 | | January 31, 2026 | | Due in one year or less | $ | 1,152,147 | | | $ | 1,025,871 | | | Due in greater than one year | 4,263,992 | | | 4,113,710 | | | Total | $ | 5,416,139 | | | $ | 5,139,581 | | | | | |
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| Schedule of Fair Values and Gross Unrealized Loss Position of Available-for-Sale Securities Aggregated by Investment Category |
The following table shows the fair values of available-for-sale securities which were in an unrealized loss position, aggregated by investment category, as of April 30, 2026 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | Less than 12 months | | 12 months or greater | | Fair
value | | Gross
unrealized
losses | | Fair
value | | Gross
unrealized
losses | Certificates of deposit | $ | 27,669 | | | $ | (41) | | | $ | — | | | $ | — | | | Asset-backed securities | — | | | — | | | 622 | | | (48) | | | Commercial paper | 34,796 | | | (3) | | | — | | | — | | | Corporate notes and bonds | 1,604,542 | | | (11,568) | | | — | | | — | | | Foreign government bonds | 111,351 | | | (636) | | | 8,048 | | | (10) | | | Municipal securities | 11,005 | | | (72) | | | — | | | — | | | | | | | | | | | U.S. treasury securities | 1,248,962 | | | (5,962) | | | — | | | — | | Total | $ | 3,038,325 | | | $ | (18,282) | | | $ | 8,670 | | | $ | (58) | | | | | | | | | |
The following table shows the fair values of available-for-sale securities which were in an unrealized loss position, aggregated by investment category, as of January 31, 2026 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | Less than 12 months | | 12 months or greater | | Fair value | | Gross unrealized losses | | Fair Value | | Gross unrealized losses | | | | | | | | | Certificates of deposit | $ | 27,690 | | | $ | (20) | | | $ | — | | | $ | — | | | Asset-backed securities | 4,091 | | | (80) | | | 1,090 | | | (51) | | | Commercial paper | 9,960 | | | (1) | | | — | | | — | | | Corporate notes and bonds | 425,464 | | | (950) | | | — | | | — | | | Foreign government bonds | 69,877 | | | (68) | | | 8,049 | | | (8) | | Municipal securities | 580 | | | — | | | — | | | — | | | U.S. treasury securities | 140,204 | | | (358) | | | — | | | — | | Total | $ | 677,866 | | | $ | (1,477) | | | $ | 9,139 | | | $ | (59) | | | | | | | | | | | | | | | | | | | | | | | | | |
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