Marketable securities

3 Months Ended

Mar. 31, 2022

Marketable Securities

Marketable securities

2. Marketable securities

Assets and liabilities measured at fair value on a recurring basis based on Level 1 and Level 2 fair value measurement criteria as of March 31, 2022 and December 31, 2021 are as follows:

			Fair Value Measurements Using
	Balance as of March 31, 2022		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Marketable securities:
Corporate bonds	$	5,472,730	$	—	$	5,472,730
Certificated of Deposits		505,313		—		505,313
Money market funds (1)		3,849,926		3,849,926		—
Total marketable securities	$	9,827,969	$	3,849,926	$	5,978,043

			Fair Value Measurements Using
	Balance as of December 31, 2021		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Marketable securities:
Corporate bonds	$	5,549,670	$	—	$	5,549,670
Certificated of Deposits		514,427		—		514,427
Money market funds (1)		6,975,302		6,975,302		—
Total marketable securities	$	13,039,399	$	6,975,302	$	6,064,097

(1) Included within cash and cash equivalents on the Company’s consolidated balance sheets.

The Company’s investments in US government bonds and money market funds are measured based on publicly available quoted market prices for identical securities as of March 31, 2022 and December 31, 2021. The Company’s investments in corporate bonds, commercial paper and certificated of deposits are measured based on quotes from market makers for similar items in active markets.