Cash, Cash Equivalents and Investments (Tables)

3 Months Ended

Mar. 31, 2021



	As of March 31, 2021
			Gross		Gross
	Amortized		unrealized		unrealized		Fair
	Cost		gains		losses		Value
Cash and cash equivalents:
Cash and money market funds	$	906,453	$	—	$	—	$	906,453
Commercial paper		25,947		—		(2)		25,945
Total cash and cash equivalents		932,400		—		(2)		932,398
Investments:
Commercial paper		75,470		2		(7)		75,465
Corporate debt securities		15,492		63		(7)		15,548
U.S. government & agency securities		136,883		29		(4)		136,908
Total investments		227,845		94		(18)		227,921
Total cash, cash equivalents and investments	$	1,160,245	$	94	$	(20)	$	1,160,319
Short-term restricted cash:
Cash	$	836	$	—	$	—	$	836
Long-term restricted cash:
Cash	$	3,500	$	—	$	—	$	3,500

	As of December 31, 2020
			Gross		Gross
	Amortized		unrealized		unrealized		Fair
	Cost		gains		losses		Value
Cash and cash equivalents:
Cash and money market funds	$	43,040	$	—	$	—	$	43,040
Commercial paper		32,538		—		(1)		32,537
U.S. government & agency securities		170		—		—		170
U.S. Treasury security		5,864		—		—		5,864
Total cash and cash equivalents		81,612		—		(1)		81,611
Investments:
Commercial paper		112,648		4		(8)		112,644
Corporate debt securities		17,360		96		—		17,456
U.S. government & agency securities		107,109		6		(12)		107,103
Total investments		237,117		106		(20)		237,203
Total cash, cash equivalents and investments	$	318,729	$	106	$	(21)	$	318,814
Short-term restricted cash:
Cash	$	836	$	—	$	—	$	836
Long-term restricted cash:
Cash	$	3,500	$	—	$	—	$	3,500



	Fair Value
Due in one year or less	$	236,278
Due after one year through 5 years		17,588
Total investments	$	253,866