| Summary of Cash, Cash Equivalents, Short-Term and Long-Term Investments by Significant Investment Category |
The following tables show the Company’s cash, cash equivalents, short-term and long-term investments by significant investment category:
|
|
|
As of December 31, 2020
|
|
|
(in thousands)
|
|
Adjusted Cost
|
|
|
Fair Value
|
|
|
Cash and Cash Equivalents
|
|
|
Short-Term Investments
|
|
|
Long-Term Investments
|
|
|
Cash
|
|
$
|
946,961
|
|
|
$
|
946,961
|
|
|
$
|
946,961
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
Level 1:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
|
423,865
|
|
|
|
423,865
|
|
|
|
423,865
|
|
|
|
—
|
|
|
|
—
|
|
|
U.S. Treasury securities
|
|
|
21,146
|
|
|
|
21,146
|
|
|
|
—
|
|
|
|
8,067
|
|
|
|
13,079
|
|
|
Total level 1
|
|
|
445,011
|
|
|
|
445,011
|
|
|
|
423,865
|
|
|
|
8,067
|
|
|
|
13,079
|
|
|
Level 2:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Corporate notes and bonds
|
|
|
117,253
|
|
|
|
117,253
|
|
|
|
—
|
|
|
|
83,521
|
|
|
|
33,732
|
|
|
Asset-backed securities
|
|
|
28,253
|
|
|
|
28,253
|
|
|
|
—
|
|
|
|
5,498
|
|
|
|
22,755
|
|
|
U.S. Agency securities
|
|
|
3,681
|
|
|
|
3,681
|
|
|
|
—
|
|
|
|
3,681
|
|
|
|
—
|
|
|
Mutual funds
|
|
|
38,846
|
|
|
|
38,846
|
|
|
|
—
|
|
|
|
—
|
|
|
|
38,846
|
|
|
Total level 2
|
|
|
188,033
|
|
|
|
188,033
|
|
|
|
—
|
|
|
|
92,700
|
|
|
|
95,333
|
|
|
TOTAL
|
|
$
|
1,580,005
|
|
|
$
|
1,580,005
|
|
|
$
|
1,370,826
|
|
|
$
|
100,767
|
|
|
$
|
108,412
|
|
|
|
|
As of December 31, 2019
|
|
|
(in thousands)
|
|
Adjusted Cost
|
|
|
Fair Value
|
|
|
Cash and Cash Equivalents
|
|
|
Short-Term Investments
|
|
|
Long-Term Investments
|
|
|
Cash
|
|
$
|
662,355
|
|
|
$
|
662,355
|
|
|
$
|
662,355
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
Level 1:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
|
162,521
|
|
|
|
162,521
|
|
|
|
162,521
|
|
|
|
—
|
|
|
|
—
|
|
|
U.S. Treasury securities
|
|
|
9,686
|
|
|
|
9,686
|
|
|
|
—
|
|
|
|
1,679
|
|
|
|
8,007
|
|
|
Total level 1
|
|
|
172,207
|
|
|
|
172,207
|
|
|
|
162,521
|
|
|
|
1,679
|
|
|
|
8,007
|
|
|
Level 2:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Corporate notes and bonds
|
|
|
132,431
|
|
|
|
132,431
|
|
|
|
—
|
|
|
|
104,130
|
|
|
|
28,301
|
|
|
Asset-backed securities
|
|
|
23,614
|
|
|
|
23,614
|
|
|
|
—
|
|
|
|
263
|
|
|
|
23,351
|
|
|
U.S. Agency securities
|
|
|
12,352
|
|
|
|
12,352
|
|
|
|
—
|
|
|
|
5,965
|
|
|
|
6,387
|
|
|
Mutual funds
|
|
|
28,543
|
|
|
|
28,543
|
|
|
|
—
|
|
|
|
—
|
|
|
|
28,543
|
|
|
Total level 2
|
|
|
196,940
|
|
|
|
196,940
|
|
|
|
-
|
|
|
|
110,358
|
|
|
|
86,582
|
|
|
TOTAL
|
|
$
|
1,031,502
|
|
|
$
|
1,031,502
|
|
|
$
|
824,876
|
|
|
$
|
112,037
|
|
|
$
|
94,589
|
|
|