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Marketable Securities (Tables)
9 Months Ended
Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]  
Summary of Marketable Securities Held

The following table summarizes the Company’s marketable securities held at September 30, 2022 (in thousands):

 

 

Amortized Cost

 

 

Gross
Unrealized
Gains

 

 

Gross
Unrealized
Losses

 

 

Fair Value

 

Commercial paper

 

$

623,804

 

 

$

2

 

 

$

(2,471

)

 

$

621,335

 

Corporate notes

 

 

19,093

 

 

 

 

 

 

(172

)

 

 

18,921

 

U.S. Treasury securities

 

 

226,112

 

 

 

 

 

 

(1,792

)

 

 

224,320

 

U.S. Government securities

 

 

54,920

 

 

 

 

 

 

(241

)

 

 

54,679

 

Corporate equity securities

 

 

18,788

 

 

 

 

 

 

 

 

 

18,788

 

Total

 

$

942,717

 

 

$

2

 

 

$

(4,676

)

 

$

938,043

 

 

The following table summarizes the Company’s marketable securities held at December 31, 2021 (in thousands):

 

 

Amortized Cost

 

 

Gross
Unrealized
Gains

 

 

Gross
Unrealized
Losses

 

 

Fair Value

 

Commercial paper

 

$

368,778

 

 

$

32

 

 

$

(67

)

 

$

368,743

 

Corporate notes

 

 

16,758

 

 

 

 

 

 

(15

)

 

 

16,743

 

Corporate equity securities

 

 

20,167

 

 

 

 

 

 

 

 

 

20,167

 

Total

 

$

405,703

 

 

$

32

 

 

$

(82

)

 

$

405,653