Investments (Tables)

3 Months Ended

Apr. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Summary of Marketable Securities

As of April 30, 2022 and January 31, 2022, our marketable securities consisted of the following: 

	As of April 30, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Commercial paper	$	34,881	$	—	$	—	$	34,881
Agency bonds	604,439		1		(10,043)		594,397
Corporate and other debt securities	288,312		1		(3,062)		285,251
U.S. government agency securities	3,192,672		43		(46,657)		3,146,058
Treasury bills	258,595		1		(209)		258,387
Marketable securities	$	4,378,899	$	46	$	(59,971)	$	4,318,974

	As of January 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Commercial paper	$	28,723	$	—	$	—	$	28,723
Agency bonds	632,935		2		(3,328)		629,609
Corporate and other debt securities	282,124		5		(1,202)		280,927
U.S. government agency securities	3,046,742		28		(19,261)		3,027,509
Treasury bills	389,826		—		(148)		389,678
Marketable securities	$	4,380,350	$	35	$	(23,939)	$	4,356,446

Summary of Contractual Maturities of Marketable Securities

The following table presents the contractual maturities of our marketable securities as of April 30, 2022 and January 31, 2022:

	As of
	April 30, 2022		January 31, 2022
	(in thousands)
Less than one year	$	2,624,024	$	2,387,139
Due in one to five years	1,694,950		1,969,307
Total	$	4,318,974	$	4,356,446

Summary of Strategic Investments

Strategic investments by form and measurement category as of April 30, 2022 were as follows:

	Measurement Category
	Fair Value		Measurement Alternative		Equity Method		Total
	(in thousands)
Equity securities	$	133,013	$	102,150	$	93,653	$	328,816
Debt securities	14,344		—		—		14,344
Strategic investments	$	147,357	$	102,150	$	93,653	$	343,160

Strategic investments by form and measurement category as of January 31, 2022 were as follows:

	Measurement Category
	Fair Value		Measurement Alternative		Equity Method		Total
	(in thousands)
Equity securities	$	168,784	$	91,399	$	93,400	$	353,583
Debt securities	14,231		—		—		14,231
Strategic investments	$	183,015	$	91,399	$	93,400	$	367,814