| Summary of Marketable Securities Held |
The following table summarizes the Company’s marketable securities held at December 31, 2023 (in thousands):
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Amortized Cost |
|
|
Gross
Unrealized
Gains |
|
|
Gross
Unrealized
Losses |
|
|
Fair Value |
|
Commercial paper |
|
$ |
285,054 |
|
|
$ |
250 |
|
|
$ |
(15 |
) |
|
$ |
285,289 |
|
Corporate notes |
|
|
23,462 |
|
|
|
63 |
|
|
|
— |
|
|
|
23,525 |
|
U.S. Treasury securities |
|
|
151,805 |
|
|
|
436 |
|
|
|
(94 |
) |
|
|
152,147 |
|
U.S. Government securities |
|
|
271,181 |
|
|
|
328 |
|
|
|
(364 |
) |
|
|
271,145 |
|
Corporate equity securities |
|
|
21,875 |
|
|
|
— |
|
|
|
— |
|
|
|
21,875 |
|
Total |
|
$ |
753,377 |
|
|
$ |
1,077 |
|
|
$ |
(473 |
) |
|
$ |
753,981 |
|
The following table summarizes the Company’s marketable securities held at December 31, 2022 (in thousands):
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Amortized Cost |
|
|
Gross
Unrealized
Gains |
|
|
Gross
Unrealized
Losses |
|
|
Fair Value |
|
Commercial paper |
|
$ |
578,813 |
|
|
$ |
72 |
|
|
$ |
(1,157 |
) |
|
$ |
577,728 |
|
Corporate notes |
|
|
19,033 |
|
|
|
— |
|
|
|
(37 |
) |
|
|
18,996 |
|
U.S. Treasury securities |
|
|
146,270 |
|
|
|
— |
|
|
|
(958 |
) |
|
|
145,312 |
|
U.S. Government securities |
|
|
63,214 |
|
|
|
13 |
|
|
|
(363 |
) |
|
|
62,864 |
|
Corporate equity securities |
|
|
40,467 |
|
|
|
— |
|
|
|
— |
|
|
|
40,467 |
|
Total |
|
$ |
847,797 |
|
|
$ |
85 |
|
|
$ |
(2,515 |
) |
|
$ |
845,367 |
|
|