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Cover Page
Aug. 05, 2025
Cover [Abstract]  
Document Type 8-K/A
Document Period End Date Aug. 05, 2025
Entity Registrant Name Upstart Holdings, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-39797
Entity Tax Identification Number 46-4332431
Entity Address, Address Line One 2950 S. Delaware Street
Entity Address, Address Line Two Suite 410
Entity Address, City or Town San Mateo
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94403
City Area Code 833
Local Phone Number 212-2461
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.0001 per share
Trading Symbol UPST
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0001647639
Amendment Flag true
Amendment Description On August 5, 2025, Upstart Holdings, Inc. (the “Company”) furnished a Current Report on Form 8-K that included a press release reporting its financial results for the fiscal quarter ended June 30, 2025 (the “Original Form 8-K”). This Current Report on Form 8-K/A amends the Original Form 8-K solely for the purpose of correcting an error with respect to the Company’s diluted Adjusted Net Income (Loss) Per Share for the three and six months ended June 30, 2025.