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Cash, Cash Equivalents and Short-Term Investments
6 Months Ended
Jul. 31, 2022
Cash and Cash Equivalents [Abstract]  
Cash, Cash Equivalents and Short-Term Investments
4. Cash, Cash Equivalents and Short-Term Investments
The following table summarizes the Company’s cash, cash equivalents and short-term investments by category (in thousands):
As of July 31, 2022
Amortized CostGross Unrealized GainsGross Unrealized LossesFair Value
Cash and cash equivalents:
    Cash$281,339 $— $— $281,339 
    Money market funds111,927 — — 111,927 
    U.S. Treasury securities7,499 — — 7,499 
    U.S. Agency securities9,996 — (4)9,992 
Total cash and cash equivalents$410,761 $— $(4)$410,757 
Short-term investments:
    Commercial paper46,197 — (190)46,007 
    Corporate debt securities48,251 17 (202)48,066 
    Municipal bonds1,974 — (11)1,963 
    Foreign government bonds2,185 — (7)2,178 
    U.S. Agency securities18,585 20 (35)18,570 
    U.S. Treasury securities404,760 10 (2,121)402,649 
Total short-term investments$521,952 $47 $(2,566)$519,433 
As of January 31, 2022, the Company had $884.7 million of cash and $50.0 million of short-term investments, comprised of certificates of deposit with a bank with an original maturity of greater than three months at the date of purchase. Such investments were carried at amortized cost, which approximated their fair value and matured during the six months ended July 31, 2022.
The Company uses the specific-identification method to determine any realized gains or losses from the sale of our short-term investments classified as available-for-sale. During the three and six months ended July 31, 2022, the Company did not have any material realized gains or losses as a result of maturities or sales of short-term investments.
During the three and six months ended July 31, 2022, the Company recorded $3.1 million and $3.6 million of interest income on cash equivalents and short-term investments, respectively, which includes $1.3 million of net amortization of premiums or discounts on short-term investments reported on the condensed consolidated statements of cash flows for the six months ended July 31, 2022.
As of July 31, 2022, the Company does not have any cash equivalents and short-term investments that have been in a continuous unrealized gain or loss position for more than 12 months as of the periods presented. The following table summarizes unrealized losses on our cash equivalents and short-term investments by category that have been in a continuous unrealized loss position for less than 12 months as of the periods presented (in thousands):
Carrying ValueGross Unrealized Losses
July 31, 2022
    U.S. Agency securities$21,107 $(39)
    Commercial paper46,007 (190)
    Corporate debt securities38,112 (202)
    Municipal bonds1,963 (11)
    Foreign government bonds2,178 (7)
    U.S. Treasury securities398,843 (2,121)
Total cash equivalents and short-term investments$508,210 $(2,570)
The following table classifies the Company’s short-term investments by contractual maturities (in thousands):
July 31, 2022January 31, 2022
Amortized costFair ValueAmortized costFair Value
Due within 1 year$375,663 $373,816 $50,031 $50,031 
Due between 1 year to 3 years146,289 145,617 — — 
Total$521,952 $519,433 $50,031 $50,031 
All available-for-sale securities have been classified as current, based on management’s ability to use the funds in current operations.