Fair Value Instruments
The following tables show the Company’s cash, cash equivalents and available-for-sale securities by significant investment category as of December 31, 2025 and 2024:
 
December 31, 2025
(in thousands)Amortized CostGross
Unrealized
Gains
Gross
Unrealized
Losses
Aggregate Fair
Value
Cash and Cash
Equivalents
Short-term
Marketable
Securities(1)
Long-term
Marketable
Securities(2)
Level 1:       
Cash and cash equivalents$496,304 $— $— $496,304 $496,304 $— $— 
Subtotal496,304 — — 496,304 496,304 — — 
Level 2:
Commercial paper12,887 (1)12,888 12,888 — 
Corporate bonds211,268 535 (6)211,797 142,801 68,996 
U.S government agency securities and treasuries234,216 653 (1)234,868 175,798 59,070 
Subtotal458,371 1,190 (8)459,553 — 331,487 128,066 
Total$954,675 $1,190 $(8)$955,857 $496,304 $331,487 $128,066 
 
December 31, 2024
(in thousands)Amortized CostGross
Unrealized
Gains
Gross
Unrealized
Losses
Aggregate Fair
Value
Cash and Cash
Equivalents
Short-term
Marketable
Securities(1)
Long-term
Marketable
Securities(2)
Level 1:       
Cash and cash equivalents$344,865 $— $— $344,865 $344,865 $— $— 
Subtotal344,865 — — 344,865 344,865 — — 
Level 2:
Commercial paper15,373 (8)15,369 — 15,369 — 
Corporate bonds177,771 423 (225)177,969 — 86,693 91,276 
U.S government agency securities and treasuries211,283 318 (173)211,428 — 150,590 60,838 
Subtotal404,427 745 (406)404,766 — 252,652 152,114 
Total$749,292 $745 $(406)$749,631 $344,865 $252,652 $152,114 
(1)The Company’s short-term marketable securities mature in one year or less.
(2)The Company’s long-term marketable securities mature between one year and two years.
See Note 2 to these consolidated financial statements for additional discussion regarding the Company’s fair value measurements.

Historical Timeline

Fiscal YearFiled
2025Feb 17, 2026Showing above
2024Feb 19, 2025
2023Feb 26, 2024
2022Feb 27, 2023
2021Feb 28, 2022
2020Mar 1, 2021
2019Mar 10, 2020

About Fair Value Disclosures

Fair value disclosures classify all assets and liabilities measured at fair value into a three-level hierarchy: Level 1 (quoted market prices), Level 2 (observable inputs like yield curves), and Level 3 (unobservable inputs requiring management estimates). The proportion of Level 3 assets directly reflects how much of the balance sheet depends on internal models rather than market evidence.

Key signals: a growing Level 3 balance relative to total fair-value assets increases valuation uncertainty and earnings volatility risk. Watch for transfers between levels — assets moving from Level 2 to Level 3 often signal deteriorating market liquidity. Unrealized gains and losses on Level 3 positions flow through earnings or other comprehensive income, so large swings deserve scrutiny. For financial institutions, examine the sensitivity disclosures that show how Level 3 valuations change under alternative assumptions. Compare the fair value of debt against its carrying amount to gauge hidden leverage.