| Schedule of Fair Value, Assets Measured on Recurring Basis |
The following tables summarizes information about our cash, cash equivalents, and investments by investment category as of April 30, 2023 and January 31, 2023 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As of April 30, 2023 | | Fair Value Level | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Fair Value | | Assets | | | | | | | | | | | Cash and cash equivalents: | | | | | | | | | | | Cash | Level 1 | | $ | 70,297 | | | $ | — | | | $ | — | | | $ | 70,297 | | | Money market funds | Level 1 | | 74,816 | | | — | | | — | | | 74,816 | | | | | | | | | | | | | U.S. agency securities | Level 2 | | 4,985 | | | 1 | | | — | | | 4,986 | | | Total cash and cash equivalents | | | $ | 150,098 | | | $ | 1 | | | $ | — | | | $ | 150,099 | | | Short-term investments: | | | | | | | | | — | | | U.S. Treasury securities | Level 1 | | $ | 168,185 | | | $ | 13 | | | $ | (689) | | | $ | 167,509 | | | Commercial paper | Level 2 | | 168,335 | | | — | | | (281) | | | 168,054 | | | Corporate notes and bonds | Level 2 | | 121,689 | | | — | | | (1,280) | | | 120,409 | | | U.S. agency securities | Level 2 | | 112,626 | | | 25 | | | (495) | | | 112,156 | | | Total short-term investments | | | $ | 570,835 | | | $ | 38 | | | $ | (2,745) | | | $ | 568,128 | | | Long-term investments: | | | | | | | | | | | U.S. Treasury securities | Level 1 | | $ | 153,329 | | | $ | — | | | $ | (1,755) | | | $ | 151,574 | | | | | | | | | | | | | Corporate notes and bonds | Level 2 | | 178,792 | | | 139 | | | (1,100) | | | 177,831 | | | U.S. agency securities | Level 2 | | 82,622 | | | 3 | | | (646) | | | 81,979 | | | Total long-term investments | | | $ | 414,743 | | | $ | 142 | | | $ | (3,501) | | | $ | 411,384 | | | | | | | | | | | | | Total assets measured at fair value | | | $ | 1,135,676 | | | $ | 181 | | | $ | (6,246) | | | $ | 1,129,611 | |
The following table summarizes the respective fair value and the classification by level within the fair value hierarchy (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As of January 31, 2023 | | Fair Value Level | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Fair Value | | Assets | | | | | | | | | | | Cash and cash equivalents: | | | | | | | | | | | Cash | Level 1 | | $ | 35,055 | | | $ | — | | | $ | — | | | $ | 35,055 | | | Money market funds | Level 1 | | 102,886 | | | — | | | — | | | 102,886 | | | Total cash and cash equivalents | | | $ | 137,941 | | | $ | — | | | $ | — | | | $ | 137,941 | | | Short-term investments: | | | | | | | | | | | U.S. Treasury securities | Level 1 | | $ | 144,392 | | | $ | 1 | | | $ | (501) | | | $ | 143,892 | | | Commercial paper | Level 2 | | 230,305 | | | 30 | | | (667) | | | 229,668 | | | Corporate notes and bonds | Level 2 | | 38,443 | | | 15 | | | (148) | | | 38,310 | | | U.S. agency securities | Level 2 | | 74,060 | | | 3 | | | (349) | | | 73,714 | | | Total short-term investments | | | $ | 487,200 | | | $ | 49 | | | $ | (1,665) | | | $ | 485,584 | | | Long-term investments: | | | | | | | | | | | U.S. Treasury securities | Level 1 | | $ | 192,337 | | | $ | — | | | $ | (2,460) | | | $ | 189,877 | | | Corporate notes and bonds | Level 2 | | 233,946 | | | 178 | | | (2,029) | | | 232,095 | | | U.S. agency securities | Level 2 | | 101,844 | | | 27 | | | (921) | | | 100,950 | | | Total long-term investments | | | $ | 528,127 | | | $ | 205 | | | $ | (5,410) | | | $ | 522,922 | | | | | | | | | | | | | Total assets measured at fair value | | | $ | 1,153,268 | | | $ | 254 | | | $ | (7,075) | | | $ | 1,146,447 | |
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