v3.26.1
Marketable Securities (Tables)
12 Months Ended
Jan. 31, 2026
Investments, Debt and Equity Securities [Abstract]  
Components of Marketable Securities
Marketable securities consist of the following for the periods presented (in thousands):

January 31, 2026
Cost or Amortized CostGross Unrealized GainsGross Unrealized LossesTotal Estimated Fair Value
U.S. government securities$188,270 $968 $— $189,238 
Corporate debt securities97,931 411 — 98,342 
Total$286,201 $1,379 $— $287,580 

January 31, 2025
Cost or Amortized CostGross Unrealized GainsGross Unrealized LossesTotal Estimated Fair Value
U.S. government securities$317,313 $745 $(409)$317,649 
Corporate debt securities112,248 609 (49)112,808 
Total$429,561 $1,354 $(458)$430,457 
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value
January 31, 2025
Continuous Unrealized Loss for Greater than 12 months
Estimated Fair ValueGross Unrealized Losses
U.S. government securities$46,442 $(22)
Total$46,442 $(22)
Marketable Securities by Contractual Maturity
The contractual maturities of the investments classified as available-for-sale marketable securities are as follows (in thousands):

January 31, 2026
Amortized CostEstimated Fair Value
Due within 1 year$115,437 $115,723 
Due in 1 year through 5 years170,764 171,857 
Total$286,201 $287,580 

January 31, 2025
Amortized CostEstimated Fair Value
Due within 1 year$234,628 $235,142 
Due in 1 year through 5 years194,933 195,315 
Total$429,561 $430,457 
Investment Income
Fiscal Year Ended January 31,
202620252024
Interest income$14,783 $18,111 $13,546 
Accretion/amortization of discount/premium, net
951 2,079 2,077 
Investment income$15,734 $20,190 $15,623