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Fair value of financial assets and liabilities
6 Months Ended
Sep. 30, 2022
Fair Value Disclosures [Abstract]  
Fair value of financial assets and liabilities Fair value of financial assets and liabilities
The following tables present information about the Company’s financial assets and liabilities measured at fair value on a recurring basis:
Fair Value Measurements as of
September 30, 2022 Using:
Level 1Level 2Level 3Total
Assets
Money market funds$— $43,170 $— $43,170 
US Government Agency bonds— 46,944 — 46,944 
US Treasury bonds— 235,946 — 235,946 
$— $326,060 $— $326,060 
Fair Value Measurements as of
March 31, 2022 Using:
Level 1Level 2Level 3Total
Assets
Money market funds$— $75,117 $— $75,117 
US Government Agency bonds— 26,688 — 26,688 
US Treasury bonds— 263,019 — 263,019 
$— $364,824 $— $364,824 
The underlying securities in the money market funds held by the Company are all government backed securities.
During the three and six months ended September 30, 2022 and 2021, there were no transfers between levels.
Valuation of cash equivalents and short-term investments
Money market funds, U.S. Government Agency bonds and U.S. Treasury bonds were valued by the Company using quoted prices in active markets for similar securities, which represent a Level 2 measurement within the fair value hierarchy. Cash equivalents consisted of money market funds at September 30, 2022 and March 31, 2022.