v3.25.2
Marketable Securities
6 Months Ended
Jul. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities Marketable Securities
Marketable securities consist of the following for the periods presented (in thousands):
July 31, 2025
Cost or Amortized CostGross Unrealized GainsGross Unrealized LossesTotal Estimated Fair Value
U.S. government securities$215,756 $478 $(177)$216,057 
Corporate debt securities66,281 316 (28)66,569 
Total$282,037 $794 $(205)$282,626 
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 

Accrued interest receivables related to our available-for-sale securities of $3.0 million as of July 31, 2025 and $4.6 million as of January 31, 2025, were included within prepaid expenses and other current assets on the consolidated balance sheets.

The Company’s short-term investments consist of available-for-sale debt securities and term deposits. The term deposits are at cost, which approximates fair value. The weighted-average remaining maturity of the Company’s investment portfolio is approximately one year as of the periods presented. No individual security incurred continuous unrealized losses for greater than 12 months as of July 31, 2025.

The following table summarizes the fair value and gross unrealized losses aggregated by category of individual securities that have been in a continuous unrealized loss position for greater than 12 months (in thousands):

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)

The Company purchases investment grade marketable debt securities which are rated by nationally recognized statistical credit rating organizations in accordance with its investment policy. This policy is designed to minimize the Company's
exposure to credit losses. As of July 31, 2025, the credit-quality of the Company’s marketable available-for-sale debt securities had remained stable. The unrealized losses recognized on marketable available-for-sale debt securities as of July 31, 2025 was primarily related to the continued market volatility associated with market expectations in the current interest rate environment. The contractual terms of these investments do not permit the issuer to settle the securities at a price less than the amortized cost basis of the investments and it is not expected that the investments would be settled at a price less than their amortized cost basis. The Company does not intend to sell the investments and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost basis. The Company is not aware of any specific event or circumstance that would require the Company to change its assessment of credit losses for any marketable available-for-sale debt security as of July 31, 2025. These estimates may change, as new events occur and additional information is obtained, and will be recognized on the consolidated financial statements as soon as they become known. No credit losses were recognized as of July 31, 2025 for the Company’s marketable debt securities.

The contractual maturities of the investments classified as available-for-sale marketable securities are as follows (in thousands):
July 31, 2025
Amortized CostEstimated Fair Value
Due within 1 year$123,273 $123,512 
Due in 1 year through 5 years158,764 159,114 
Total$282,037 $282,626 
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

Investment income consists of interest income and accretion income/amortization expense on our cash, cash equivalents, restricted cash, and marketable securities. Investment income is included within other income, net on the consolidated statements of operations. The primary components of investment income from marketable securities were as follows (in thousands):
Three Months Ended
July 31,
Six Months Ended
July 31,
2025202420252024
Interest income$3,748 $4,455 $8,529 $8,615 
Accretion/amortization of discount/premium, net
255 556 654 1,043 
Investment income$4,003 $5,011 $9,183 $9,658