Fair Value Measurements | Note 5—Fair Value Measurements As of March 31, 2024 and December 31, 2023 the Company’s cash equivalents, short-term investments, and long-term investments primarily consisted of available-for-sale debt securities. These debt securities are measured at fair value and classified within Level 1 or Level 2 in the fair value hierarchy as the Company uses unadjusted quoted prices for identical assets in an active market that the Company has the ability to access (Level 1) or quoted market prices in markets that are not active or model derived valuations in which all significant inputs are observable in active markets (Level 2). As of March 31, 2024 and December 31, 2023 the Company’s long-term investments also consisted of investments in loan receivables and in third-party managed funds. The investments in loan receivables are measured on an amortized cost basis and classified in Level 3 of the fair value hierarchy as the fair value is derived from techniques in which one or more significant inputs are unobservable. The investments in third-party managed funds are measured on the net assets value (“NAV”) basis as a practical expedient. NAV is primarily determined based on the information provided by external fund administrators for which the most recent financial information is typically received on a lag within the quarter following the Company’s balance sheet date. These investments further the Company’s impact strategy as part of the Company’s Impact Investment Fund. The following table sets forth the cost, gross unrealized losses, gross unrealized gains, and fair value of the Company’s investments as of the dates indicated (in thousands): Cost Gross Gross Fair Value Cash and Cash Equivalents Short-term Investments Long-term Investments March 31, 2024 Level 1 Money market funds $ 62,483 $ — $ — $ 62,483 $ 62,403 $ 80 $ — U.S. Government securities 68,563 (303) — 68,260 — 48,579 19,681 131,046 (303) — 130,743 62,403 48,659 19,681 Level 2 U.S. agency securities 5,036 (3) — 5,033 — 5,033 — Certificate of deposit 52,114 (5) 35 52,144 — 50,629 1,515 Commercial paper 80,551 (59) 17 80,509 — 80,509 — Corporate bonds 112,393 (213) 117 112,297 — 70,045 42,252 250,094 (280) 169 249,983 — 206,216 43,767 Level 3 Loans receivable - held for investment 7,000 — — 7,000 — — 7,000 7,000 — — 7,000 — — 7,000 $ 388,140 $ (583) $ 169 $ 387,726 $ 62,403 $ 254,875 $ 70,448 Measured at NAV (1) Third-party managed funds 13,976 $ 84,424 December 31, 2023 Level 1 Money market funds $ 377,021 $ — $ — $ 377,021 $ 376,941 $ 80 $ — U.S. Government securities 95,298 (164) 39 95,173 — 60,153 35,020 472,319 (164) 39 472,194 376,941 60,233 35,020 Level 2 U.S. agency securities 15,635 (14) 3 15,624 — 15,624 — Certificate of deposit 35,365 (1) 55 35,419 — 35,419 — Commercial paper 62,463 (12) 54 62,505 4,449 58,056 — Corporate bonds 100,386 (145) 128 100,369 1,566 66,786 32,017 213,849 (172) 240 213,917 6,015 175,885 32,017 Level 3 Loans receivable - held for investment 6,000 — — 6,000 — — 6,000 6,000 — — 6,000 — — 6,000 $ 692,168 $ (336) $ 279 $ 692,111 $ 382,956 $ 236,118 $ 73,037 Measured at NAV (1) Third-party managed funds 13,639 $ 86,676 (1) Third-party managed funds measured on the NAV basis have not been categorized in the fair value hierarchy. The amount presented in the table is intended to permit reconciliation of the long-term investments in the fair value hierarchy to the amount presented in the Consolidated Balance Sheets. The tables below show the fair value and gross unrealized loss related to available-for-sale debt securities, aggregated by investment category and the length of time that the securities have been in a continuous unrealized loss position as of the dates indicated (in thousands): As of March 31, 2024 Less than 12 Months 12 Months or Greater Fair Value Gross Unrealized Holding Loss Fair Value Gross Unrealized Holding Loss U.S. Government securities $ 68,260 $ (303) $ — $ — U.S. agency securities 5,033 (3) — — Certificate of deposit 24,043 (5) — — Commercial paper 64,039 (59) — — Corporate bonds 70,375 (143) 3,255 (70) Total $ 231,750 $ (513) $ 3,255 $ (70) As of December 31, 2023 Less than 12 Months 12 Months or Greater Fair Value Gross Unrealized Holding Loss Fair Value Gross Unrealized Holding Loss U.S. Government securities $ 71,536 $ (164) $ — $ — U.S. agency securities 12,569 (14) — — Certificate of deposit 7,178 (1) — — Commercial paper 34,066 (12) — — Corporate bonds 28,401 (73) 20,808 (72) Total $ 153,750 $ (264) $ 20,808 $ (72) The Company evaluates fair value for each individual security in the investment portfolio. When assessing the risk of credit loss, the Company considers factors such as the extent to which the fair value is less than the amortized cost basis, the credit rating, including whether there has been any changes to the rating of the security by a rating agency, available information relevant to the collectability of the security, and management’s intended holding period and time horizon for selling the security. Outside of the Company’s Impact Investment Fund, the Company typically invests in short- and long-term instruments, including fixed-income funds and U.S. Government securities aligned with the Company’s investment strategy. In accordance with the Company’s investment policy, all investments, other than investments made through its Impact Investment Fund, have maturities no longer than 37 months, with the average maturity of these investments maintained at 12 months or less. Disclosure of Fair Values The Company’s financial instruments that are not remeasured at fair value in the Consolidated Balance Sheets include the Notes. See “Note 7—Debt” for additional information. The Company estimates the fair value of the Notes through inputs that are observable in the market, classified as Level 2 as described above. The following table presents the carrying value and estimated fair value of the Notes as of the dates indicated (in thousands): As of March 31, 2024 As of December 31, 2023 Carrying Value Fair Value Carrying Value Fair Value 2021 Notes $ 992,003 $ 791,600 $ 991,529 $ 799,000 2020 Notes 645,923 545,480 645,624 556,790 2019 Notes 646,957 688,750 646,664 747,630 $ 2,284,883 $ 2,025,830 $ 2,283,817 $ 2,103,420 The carrying value of other financial instruments, including accounts receivable, funds receivable and seller accounts, accounts payable, and funds payable and amounts due to sellers approximate fair value due to the immediate or short-term maturity associated with these instruments. |