v3.26.1
Marketable Securities (Tables)
 3 Months Ended
Apr. 30, 2026
Investments, Debt and Equity Securities [Abstract]  
Schedule of Marketable Securities
The following is a summary of our marketable securities (in thousands): 
As of April 30, 2026
Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Treasury bills and U.S. government securities(1)
$608,268 $— $(581)$607,687 
Corporate bonds138,445 — (176)138,269 
Commercial paper34,704 — (12)34,692 
Yankee bonds2,909 — (6)2,903 
Total marketable securities$784,326 $— $(775)$783,551 
(1) Additional treasury bills with both amortized cost and estimated fair value of $32.0 million are included in cash and cash equivalents due to their original maturities of three months or less.
As of January 31, 2026
Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Treasury bills and U.S. government securities(1)
$619,831 $324 $— $620,155 
Corporate bonds160,872 5 — 160,877 
Commercial paper34,373 17 — 34,390 
Yankee bonds2,899 — (2)2,897 
Total marketable securities$817,975 $346 $(2)$818,319 
(1) Additional treasury bills with both amortized cost and estimated fair value of $22.0 million are included in cash and cash equivalents due to their original maturities of three months or less.