Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Assets
Cash		$ 445,274	$ 368,405
Restricted cash		210,493	99,382
Loans (at fair value)	[1]	656,120	1,156,413
Property, equipment, and software, net		38,328	42,655
Operating lease right of use assets		46,318	54,694
Beneficial interest assets (at fair value)		131,483	41,012
Non-marketable equity securities		41,250	41,250
Goodwill		67,062	67,062
Other assets (includes $48,897 and $70,676 at fair value as of December 31, 2023 and September 30, 2024, respectively)		172,652	146,227
Total assets	[2]	1,808,980	2,017,100
Liabilities:
Payable to investors		60,778	53,580
Borrowings		887,367	1,040,424
Payable to securitization note holders (at fair value)		100,335	141,416
Accrued expenses and other liabilities (includes $10,510 and $18,671 at fair value as of December 31, 2023 and September 30, 2024, respectively)		111,616	84,051
Operating lease liabilities		53,348	62,324
Total liabilities	[2]	1,213,444	1,381,795
Stockholders’ equity:
Common stock, $0.0001 par value; 700,000,000 shares authorized; 86,330,303 and 90,998,255 shares issued and outstanding as of December 31, 2023 and September 30, 2024, respectively		9	9
Additional paid-in capital		1,003,929	917,872
Accumulated deficit		(408,402)	(282,576)
Total stockholders’ equity		595,536	635,305
Total liabilities and stockholders’ equity		$ 1,808,980	$ 2,017,100

[1] Includes $179.1 million and $118.5 million of loans, at fair value, contributed as collateral for the consolidated securitization as of December 31, 2023 and September 30, 2024, respectively. Refer to “Note 6. Fair Value Measurement” for details.

[2] The following table presents information on assets and liabilities related to variable interest entities (“VIEs”) that are consolidated by Upstart Holdings, Inc. at December 31, 2023 and September 30, 2024. The assets in the table below may only be used to settle obligations of consolidated VIEs and are in excess of those obligations. The liabilities in the table below include liabilities for which creditors do not have recourse to the general credit of Upstart Holdings, Inc. The assets and liabilities in the table below include third-party assets and liabilities of consolidated VIEs and exclude intercompany balances that eliminate in consolidation. December 31,September 30,20232024AssetsCash$1,603 $2,041 Restricted cash23,450 50,231 Loans (at fair value)1,147,423 624,318  Other assets (includes $5,958 and $2,139 at fair value as of December 31, 2023 and September 30, 2024, respectively) 22,917 13,024 Total assets$1,195,393 $689,614 LiabilitiesPayable to investors$121 $154 Borrowings387,440 170,085 Payable to securitization note holders (at fair value)141,416 100,335 Accrued expenses and other liabilities1,975 4,774 Total liabilities530,952 275,348 Total net assets$664,441 $414,266