v3.26.1
FAIR VALUE OF ASSETS AND LIABILITIES - Summary of Changes in Level 3 Fair Value Assets and Liabilities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Total    
Beginning balance, total $ 178,755 $ 384,573
Purchase of Borrower Loans/Issuance of Notes 2,488,435 2,056,519
Principal repayments on Borrower Loans 100,009 177,125
Borrower Loans sold to third parties (2,490,334) (2,059,792)
Other changes (1,103) (1,429)
Change in fair value (9,907) (23,991)
Ending balance, total 65,837 178,755
Prosper Funding LLC    
Total    
Beginning balance, total 2,548 2,345
Purchase of Borrower Loans/Issuance of Notes 2,488,435 2,056,519
Borrower Loans contributed by Parent, at Fair Value   1,634
Principal repayments on Borrower Loans 1,522 3,056
Borrower Loans sold to third parties (2,490,334) (2,059,100)
Other changes 7 3
Change in fair value (741) (1,909)
Ending balance, total 1,437 2,548
Notes    
Liabilities    
Beginning balance, Liabilities (283,030) (321,966)
Purchase of Borrower Loans/Issuance of Notes (163,892) (184,200)
Principal repayments on Borrower Loans 183,753 195,169
Borrower Loans sold to third parties 0 0
Other changes 474 424
Change in fair value 18,795 27,543
Ending balance, Liabilities (243,900) (283,030)
Notes | Prosper Funding LLC    
Liabilities    
Beginning balance, Liabilities (283,030) (321,966)
Purchase of Borrower Loans/Issuance of Notes (163,892) (184,200)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Contributions   0
Principal repayments on Borrower Loans 183,753 195,169
Borrower Loans sold to third parties 0 0
Other changes 474 424
Change in fair value 18,795 27,543
Ending balance, Liabilities (243,900) (283,030)
Borrower Loans    
Assets    
Beginning balance, Assets 461,785 545,038
Purchase of Borrower Loans/Issuance of Notes 164,625 186,073
Principal repayments on Borrower Loans (283,762) (349,740)
Borrower Loans sold to third parties (2,632) (4,454)
Other changes (1,577) (1,550)
Change in fair value (28,702) (49,271)
Ending balance, Assets 309,737 461,785
Borrower Loans | Prosper Funding LLC    
Assets    
Beginning balance, Assets 285,578 324,311
Purchase of Borrower Loans/Issuance of Notes 164,625 186,073
Borrower Loans contributed by Parent, at Fair Value   1,634
Principal repayments on Borrower Loans (182,231) (192,113)
Borrower Loans sold to third parties (2,632) (4,454)
Other changes (467) (421)
Change in fair value (19,536) (29,452)
Ending balance, Assets 245,337 285,578
Loans Held for Sale    
Assets    
Beginning balance, Assets 0 161,501
Purchase of Borrower Loans/Issuance of Notes 2,487,702 2,054,646
Principal repayments on Borrower Loans 0 (22,554)
Borrower Loans sold to third parties (2,487,702) (2,055,338)
Other changes 0 (303)
Change in fair value 0 (2,263)
Ending balance, Assets 0 0
Loans Held for Sale | Prosper Funding LLC    
Assets    
Beginning balance, Assets 0 0
Purchase of Borrower Loans/Issuance of Notes 2,487,702 2,054,646
Borrower Loans contributed by Parent, at Fair Value   0
Principal repayments on Borrower Loans 0 0
Borrower Loans sold to third parties (2,487,702) (2,054,646)
Other changes 0 0
Change in fair value 0 0
Ending balance, Assets $ 0 $ 0