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Fair Value Measurements (Tables)
 6 Months Ended
Jul. 31, 2025
Fair Value Disclosures [Abstract]  
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following table summarizes our financial assets that are measured at fair value on a recurring basis:
July 31, 2025
(in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Level 1:
Cash equivalents(1)
Money market funds$271,366 $— $— $271,366 
Level 2:
Cash equivalents(1)
Commercial paper8,243 — (1)8,242 
Available-for-sale securities
Commercial paper25,077 — (22)25,055 
Corporate notes and bonds390,516 213 (399)390,330 
U.S. governmental securities38,000 1 (53)37,948 
Level 2 total461,836 214 (475)461,575 
Total$733,202 $214 $(475)$732,941 
January 31, 2025
(in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Level 1:
Cash equivalents(1)
Money market funds$183,885 $— $— $183,885 
Level 2:
Available-for-sale securities
Commercial paper31,367 12 (8)31,371 
Corporate notes and bonds399,034 522 (378)399,178 
U.S. governmental securities18,500 1 (21)18,480 
Level 2 total448,901 535 (407)449,029 
Total$632,786 $535 $(407)$632,914 
(1) Included in “cash and cash equivalents” in our consolidated balance sheets as of July 31, 2025 and January 31, 2025, in addition to cash of $320.4 million and $464.7 million.
Schedule of Fair Value of Available-for-sale Marketable Securities by Remaining Contractual Maturities
The fair values of our available-for-sale securities as of July 31, 2025, by remaining contractual maturities, were as follows (in thousands):
Due in one year or less$244,469 
Due in one to two years208,864 
$453,333