Fair Value Measurements | Fair Value Measurements Assets measured at fair values on a recurring basis We measure and report our cash equivalents, restricted cash, marketable equity securities and available-for-sale debt securities at fair value on a recurring basis. The following tables summarize the fair value of these financial assets by significant investment category and their levels within the fair value hierarchy (in thousands): As of March 31, 2022 As of December 31, 2021 Level I Level II Level III Total Level I Level II Level III Total Financial Assets: Cash Equivalents: Money market funds $ 201,922 $ — $ — $ 201,922 $ 221,382 $ — $ — $ 221,382 Marketable Securities: Commercial paper — 95,239 — 95,239 — 141,274 — 141,274 Certificate of deposits (1) — 37,330 — 37,330 — 44,931 — 44,931 U.S. government notes 1,093,921 — — 1,093,921 1,057,810 — — 1,057,810 Corporate bonds — 1,265,406 — 1,265,406 — 1,252,226 — 1,252,226 Agency securities — 275,182 — 275,182 — 291,261 — 291,261 Marketable equity securities (2) 21,811 — — 21,811 — — — — 1,115,732 1,673,157 — 2,788,889 1,057,810 1,729,692 — 2,787,502 Other Assets: Money market funds - restricted 4,258 — — 4,258 4,237 — — 4,237 Total Financial Assets $ 1,321,912 $ 1,673,157 $ — $ 2,995,069 $ 1,283,429 $ 1,729,692 $ — $ 3,013,121 ______________________________________ (1) As of March 31, 2022 and December 31, 2021, all of our certificates of deposits were domestic deposits. (2) The $21.8 million represents the fair value of marketable equity securities as of March 31, 2022. This amount includes $8.3 million that was reclassified from Investments on our condensed consolidated balance sheet following the commencement of public market trading of the issuer in the current quarter, in addition to unrealized gains of $13.5 million recorded during the current quarter. The unrealized gains are included in Other income, net on the Condensed Consolidated Statements of Operations. Refer to Note 3. Financial Statement Details. During the three months ended on March 31, 2022, the Company did not make any transfers between the levels of the fair value hierarchy. Marketable debt securities The following table summarizes the amortized cost, unrealized gains and losses, and fair value of our debt securities at fair value on a recurring basis (in thousands): As of March 31, 2022 As of December 31, 2021 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value Commercial paper $ 95,239 $ — $ — $ 95,239 $ 141,274 $ — $ — $ 141,274 U.S. government notes 1,106,454 16 (12,549) 1,093,921 1,060,716 3 (2,909) 1,057,810 Corporate bonds 1,278,474 20 (13,088) 1,265,406 1,255,149 105 (3,028) 1,252,226 Agency securities 277,535 2 (2,355) 275,182 291,558 36 (333) 291,261 Total $ 2,757,702 $ 38 $ (27,992) $ 2,729,748 $ 2,748,697 $ 144 $ (6,270) $ 2,742,571 We invest in marketable securities that have maximum maturities of two years and are generally deemed to be low risk based on their credit ratings from the major rating agencies. The longer the duration of these marketable securities, the more susceptible they are to changes in market interest rates and bond yields. We expect to realize the full value of these investments upon maturity and do not expect to sell the debt securities prior to maturity; therefore, we do not consider any of our marketable securities to be impaired as of March 31, 2022. We did not recognize any credit losses or non-credit-related impairments related to our available-for-sale marketable securities for the three months ended March 31, 2022. The following is an analysis of our marketable securities in unrealized loss positions for a period of less than twelve months. As of March 31, 2022, there are no unrealized loss positions with a duration equal to or greater than twelve months (in thousands): As of March 31, 2022 Unrealized Losses within 12 months Fair Value Unrealized Losses U.S. government notes $ 1,080,225 $ (12,549) Corporate bonds 1,223,546 (13,088) Agency securities 262,329 (2,355) Total $ 2,566,100 $ (27,992) As of March 31, 2022, we had no marketable debt securities with contractual maturities that exceed 24 months. The fair values of marketable debt securities, by remaining contractual maturities, are as follows (in thousands): As of March 31, 2022 Fair Values Due in 1 year or less $ 1,765,710 Due in 1 year through 2 years 964,038 Total debt securities $ 2,729,748 The weighted-average remaining duration of our marketable debt securities is approximately 0.8 years as of March 31, 2022. As we view these marketable debt securities as available to support current operations, we classify marketable debt securities with maturities beyond 12 months as current assets under the caption "Marketable securities" on the condensed consolidated balance sheets. Assets measured at fair value on a non-recurring basis Non-Marketable Equity Securities We have non-marketable equity securities in privately-held companies that do not have readily determinable fair values. These equity securities are included in Investments on the condensed consolidated balance sheets. Their initial cost is adjusted to fair value on a non-recurring basis based on observable price changes from orderly transactions of identical or similar securities of the same issuer, or for impairment. These investments are classified within Level III of the fair value hierarchy as we estimate the value based on valuation methods using the observable transaction price at the transaction date and other significant unobservable inputs, such as volatility, rights, and obligations related to these securities. In addition, the valuation requires management judgment due to the absence of market price and lack of liquidity. We did not record any realized gains or losses for our non-marketable equity securities measured at fair value on a non-recurring basis during the three months ended March 31, 2022 and March 31, 2021. We recorded an unrealized gain of $15.0 million on non-marketable equity securities based on observable price changes from orderly transactions of identical or similar securities of the same issuer in the three months ended March 31, 2022, but did not record any unrealized losses or further unrealized gains in the three months ended March 31, 2022 and March 31, 2021. We evaluate our non-marketable equity securities for impairment at each reporting period via a qualitative assessment with various potential impairment indicators, including, but not limited to, an assessment of a significant adverse change in the economic environment, significant adverse changes in the general market condition of the geographies and industries in which our investees operate, and other publicly available information that affected the value of the its non-marketable equity securities. The following table summarizes the activity related to our non-marketable equity securities as of March 31, 2022 and December 31, 2021 (in thousands): March 31, 2022 December 31, 2021 Cost of investments (1) $ 23,625 $ 14,933 Cumulative impairment — — Cumulative upward adjustment (1) 15,000 5,314 Carrying amount of investments $ 38,625 $ 20,247 |