Marketable Securities (Tables)

3 Months Ended

Apr. 30, 2024

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, 2024
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Commercial paper	$	978	$	—	$	—	$	978
Treasury bills and U.S. government securities(1)	710,071		—		(506)		709,565
Corporate bonds(2)	24,778		—		(60)		24,718
Agency bonds	54,661		—		(40)		54,621
Total marketable securities	$	790,488	$	—	$	(606)	$	789,882
(1) Additional treasury bills with both amortized cost and estimated fair value of $19.8 million are included in cash and cash equivalents due to their original maturity of three months or less.
(2) Additional corporate bonds with both amortized cost and estimated fair value of $6.1 million are included in cash and cash equivalents due to their original maturity of three months or less.

	As of January 31, 2024
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Treasury bills and U.S. government securities	641,263		29		(100)		641,192
Corporate bonds	1,993		—		(2)		1,991
Agency bonds	174,990		—		(28)		174,962
Total marketable securities	$	818,246	$	29	$	(130)	$	818,145