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Short-term marketable securities (Tables)

9 Months Ended

Sep. 30, 2021

Short-term marketable securities

Summary of short-term marketable securities

The following is a summary of short-term marketable securities as of September 30, 2021 and December 31, 2020:


		September 30, 2021
		Amortized cost			Gross unrealized gains			Gross unrealized losses			Fair value
Money market funds		$	139,039		$	—		$	—		$	139,039
Commercial paper			7,000			—			—			7,000
Corporate debt securities			43,163			—			(17)			43,146
		$	189,202		$	—		$	(17)		$	189,185

Cash equivalents											$	139,039
Short-term marketable securities												50,146
											$	189,185

		December 31, 2020
		Amortized cost			Gross unrealized gains			Gross unrealized losses			Fair value
Money market funds		$	158,023		$	—		$	—		$	158,023
Commercial paper			47,955			—			—			47,955
Corporate debt securities			33,193			—			(3)			33,190
		$	239,171		$	—		$	(3)		$	239,168

Cash equivalents											$	158,023
Short-term marketable securities												81,145
											$	239,168