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Fair Value Measurements (Tables)
 9 Months Ended
Oct. 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:
October 31, 2025
(in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Level 1:
Cash equivalents(1)
Money market funds$258,197 $— $— $258,197 
Level 2:
Available-for-sale securities
Commercial paper32,777 7 (6)32,778 
Corporate notes and bonds410,241 730 (126)410,845 
U.S. governmental securities21,498 2 (14)21,486 
Level 2 total464,516 739 (146)465,109 
Total$722,713 $739 $(146)$723,306 
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 October 31, 2025 and January 31, 2025, in addition to cash of $325.1 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 October 31, 2025, by remaining contractual maturities, were as follows (in thousands):
Due in one year or less$256,580 
Due in one to two years208,529 
$465,109