Prosper Marketplace, Inc. is a San Francisco, California-based financial services company that operates Prosper.com, one of the first peer-to-peer lending platforms in the United States. Founded in 2005, Prosper enables individuals to apply for personal loans, open credit cards, or invest in consumer credit through a marketplace model. The platform connects borrowers and investors directly, with the loan amounts ranging from $2,000 to $50,000. Since its launch, Prosper has facilitated over $23 billion in personal loans.
The company is structured around Prosper Funding LLC, which services loans and manages borrower and investor relationships. In addition to its core lending business, Prosper offers tools for financial planning and credit monitoring. In April 2025, Prosper entered a $500 million forward flow agreement with Fortress Investment Ground and Edge Focus to expand loan originations.
Overview
Prosper Marketplace is America's first peer-to-peer lending marketplace, with over $23 billion in funded loans.[1] Borrowers request personal loans on Prosper and investors (individual or institutional) can fund anywhere from $2,000 to $50,000 per loan request.Investors can consider borrowers’ credit scores, ratings, and histories and the category of the loan. Prosper handles the servicing of the loan and collects and distributes borrower payments and interest back to the loan investors.
Prosper verifies borrowers' identities and select personal data before funding loans[2]
US$ -54.08 million (2024)
assets
US$ 877.03 million (2024)
products
Unsecured Personal Loans
Home Equity Loan
Home equity line of credit
Credit Card
homepage
www.prosper.com
and manages all stages of loan servicing.
Prosper's unsecured personal loans are fully amortized over a period of three or five years, with no pre-payment penalties.
Prosper generates revenue by collecting a one-time fee on funded loans from borrowers and assessing an annual loan servicing fee to investors.
From 2006 to 2009, Prosper operated a variable rate model. Prosper acted as an eBay-style online auction marketplace, with lenders and borrowers ultimately determining loan rates using a Dutch auction-like system.[3] Effective December 19, 2010, Prosper filed a new prospectus with the SEC, changing its business model to use pre-set rates determined solely by Prosper based on a formula evaluating each prospective borrower's credit risk.[4][5] Under the new approach, lenders no longer determine the loan rate via price discovery in an auction. Instead, they simply choose whether or not to invest at the rate which Prosper's loan pricing algorithm assigns to the loan after it analyzes the borrower's credit report and financial information.
The idea for the service is derived from group banking concepts, such as rotating savings and credit associations.Other motivating ideas derive from the concepts of microlending and microfinance.
Prosper publishes performance statistics on its website and all market data is available to the public for analysis.[6] All transactions are in US dollars; lenders and borrowers must be US residents.Prosper's 10.69% annualized seasoned rate of return, net of fees, for the period of July 1, 2009 through September 30, 2011 was independently audited[7] by Ashland Partners & Company LLP in December 2011.[8]
In 2016, Prosper Marketplace unveiled Prosper Daily, a mobile app. The app is designed to give consumers tools to make financial decisions, including viewing all their financial accounts in one place, budgeting and tracking spending by category, identifying questionable charges, and monitoring their free credit score, which is updated monthly.[9]
Prosper opened to the public on February 5, 2006, and was founded by Chris Larsen (the founder of E-loan) and John Witchel.Prosper is backed by BlackRock, Sequoia Capital, Accel Partners, Agilus Ventures, Benchmark Capital, CrossLink Capital, DAG Ventures, Draper Fisher Jurvetson, Fidelity Ventures, Omidyar Network (an investment vehicle of eBay founder Pierre Omidyar), Meritech Capital Partners, TomorrowVentures (an investment vehicle of Google Executive Chairman Eric Schmidt), and QED Investors (an investment vehicle of Capital One co-founder Nigel Morris).
In April 2025, Prosper entered into a $500 million forward flow agreement with Fortress Investment Group and Edge Focus.This partnership is designed to expand Prosper's personal loan marketplace by providing dedicated capital support loan originations.[10]
Evaluation of credit risk
Prosper has provided an increasing amount of information about prospective borrowers over time, while also making various changes to its credit policy. Prior to its 2008 'quiet period' and 2009 SEC registration, the company provided "Credit Grades" and other credit information about its prospective lenders. Following the SEC registration, the company created a new model that determined "Prosper Ratings" instead. Additionally, new prospective borrowers were required to have an FICO 8 credit score of at least 640, while returning borrowers only need a score of 600 to request a loan.[11]
Prosper Ratings
Since its SEC registration in 2009, Prosper has provided a proprietary "Prosper Rating" for prospective borrowers based on the company's estimation of that borrower's "estimated loss rate." According to the company, that figure is "determined by two scores: (1) the credit score, obtained from an official credit reporting agency, and (2) the Prosper Score, figured in-house based on the Prosper population." Prosper Ratings, from lowest-risk to highest-risk, are labeled AA, A, B, C, D, E, and HR ("High Risk").[12]
Business model
Prosper has a transaction-based business model, in which the company collects revenue by taking a fee on its customers' transactions. Borrowers who receive a loan, pay an origination fee of 1.00% to 5.00%,[13] depending on the borrower's Prosper Rating, and investors pay a 1% annual servicing fee.
Secondary market / trading platform
As borrowers repay over the three, or five-year fixed term of their Prosper loan, payments are distributed to investors' accounts. This money may then be re-invested into new Prosper loans or withdrawn from Prosper by transfer into the bank accounts of the Prosper investors.
Prosper had developed a secondary market for note trading, in cooperation with Folio Investing. Through the secondary market platform, investors were able to buy and sell Prosper loans ("notes") at any time. However, Prosper declared in its prospective dated December 21, 2016, that its relationship with Folio Investing had terminated on October 31, 2016.[14] Consequently, note purchasers were informed that they would have to hold their notes to maturity unless Prosper were to establish a new secondary market platform, for which it made no assurance.
Wells Fargo appears as a trustee in Prospers note indenture.[15]
IRA investor accounts
As of March 1, 2012, Prosper allows tax-free or tax-deferred investment via self-directed IRA accounts. Traditional IRAs, Roth IRAs, SEP IRAs, and 401(k) Rollovers are supported through Prosper's IRA custodian partners Equity Institutional and Millennium Trust.The minimum investment required to open a self-directed Prosper IRA account is $5,000.[16]
Financial structure of Prosper loans
According to the prospectus issued to investors on July 13, 2009, Prosper notes since relaunch are obligations of Prosper Marketplace and not of the original borrower. Prosper promises to pay the noteholder ("investor") the funds it receives from the underlying borrower. Noteholders of Prosper's "member payment dependent" notes are considered unsecured creditors of Prosper Marketplace with limited recourse against it. The Prospectus states that in the event Prosper becomes insolvent or declares bankruptcy, investors in Prosper notes may lose all or part of their investment even if the underlying borrower continues to pay. Investors' recourse in the event borrower-supplied information proves incorrect for any reason is also "extremely" limited.[17] This structure is identical to that adopted by LendingClub after SEC registration.
Prosper credit card
In 2022, Forbes gave a negative review of the Prosper credit card.According to Forbes, "Prospering with the Prosper® Card* seems unlikely... We hope you live long and… well, apply for a different credit card."[18]
Legal matters
SEC regulations
On November 24, 2008, the SEC found Prosper to be in violation of the Securities Act of 1933. As a result of these findings, the SEC imposed a cease and desist order on Prosper. Due primarily to the novel nature of the peer-to-peer lending models, the SEC, after review, now treats all peer-to-peer lending transactions as sales of securities and requires that all platforms register with the SEC.
In July 2009, Prosper reopened their website for lending ("investing") and borrowing after having obtained SEC registration for its loans ("notes").[19] After the relaunch, bidding on loans was restricted to residents of 28 U.S. states and the District of Columbia. Borrowers may reside in any of 47 states, with residents of three states (Iowa, Maine, and North Dakota) not permitted to borrow through Prosper.
Class-action lawsuit
On November 26, 2008, a class action lawsuit was filed against Prosper in the Superior Court of California, County of San Francisco, California. The suit was brought on behalf of all loan note purchasers in Prosper's online lending platform from January 1, 2006, through October 14, 2008, and alleges that Prosper offered and sold unqualified and unregistered securities in violation of the California and federal securities laws. The lawsuit seeks class certification, damages, the right of rescission and the award of attorneys’ fees.
Prosper's insurer, Greenwich Insurance Company, refused to pay for defense expenses, claiming the matters involved were not covered by the insurance policy. On December 14, 2010, Judge Richard A. Kramer of California Superior Court issued a tentative decision ruling for Prosper on this limited issue and holding that Greenwich is obligated to defend Prosper in the class-action suit and to reimburse Prosper's litigation expenses so far. Although the decision did not rule on the lawsuit itself or address whether Prosper might be entitled to insurance coverage in the event any of the lawsuit's claims proved meritorious, it relieved Prosper of significant legal expenses in the interim.[20]
The lawsuit was settled July 19, 2013, for 10 million dollars paid in installments over three years.[21]
Farook use of Prosper
In December 2015, the FBI reported that Syed Rizwan Farook, one of the shooters in the 2015 San Bernardino attack, had borrowed $28,500 from Prosper to finance the purchase of weapons and explosives.This was investigated by the FBI, the House Financial Services Committee, and the California Department of Business Oversight.[22]
Market performance
Loan performance
Prosper maintains a full public database of all loans issued through its marketplace on its website. This database and all market statistics can be accessed and queried for analysis of loan performance over time. An interface to run complex performance queries is supported and allows investors (and the public) to look into the performance of any subset of loans over whatever time period they choose.[6]
Prosper reports a 10.69% annualized seasoned rate of return, net of fees, for all loans issued from its re-opening after SEC registration (July 1, 2009) to the 30th of September, 2011. Prosper's returns for this period have been independently audited[7] by Ashland Partners & Company LLP.[8] A number of factors, including Prosper's decision to set the interest rates on all loans (rather than let investors choose the rates they would accept), occurred after Prosper registered with the SEC and began issuing new loan notes in July, 2009. Additionally, after Prosper began setting the rates on all loans itself, Prosper significantly tightened the minimum credit quality necessary for a borrower to receive a Prosper loan. Many borrowers who received loans prior to 2009 (which were priced by investors) would no longer qualify for a loan, at any rate, under Prosper's new underwriting policies.
Loan performance prior to July 2009
As of August 2008, approximately 18.5% of all money loaned through Prosper from inception (February 2006) through June 2008 were in some form of delinquency. Also, more than 35% of all loans that originated in February 2007 were in some form of delinquency.
As of January 24, 2010, Prosper reported that 22.45% of all money lent since inception had been charged off and an additional 2.51% was delinquent but not yet charged off. Charge-off rates by credit score category ranged from 11.57% of money lent to borrowers with a credit score of 760 or higher to 44.30% of money lent to borrowers with a credit score below 600. Eric's Credit Community reported generally consistent delinquency results, with a 24-month delinquency rate by credit grade for loans originated after January 1, 2006, ranging from 11.8% for 'AA' loans to 61.6% for 'HR' loans. The charge-off rates in many cases exceeded the interest received on the loan categories, resulting in a negative return. Eric's reported that the median return to Prosper investors was negative 2.00% and the mean return negative 2.28.
After Prosper's relaunch in July 2009, and implementing stricter credit guidelines for borrowers[23] Prosper's loan default rate has been significantly reduced.The percentage of all loans that are 6+ months old, and are 1+ month late, dropped to less than 4%.[24] As of Aug 11, 2010, the 4 months that match these criteria are the lowest percentage of late payments Prosper has seen since inception.[24]
Financial history
Since its 2009 relaunch, Prosper received a Series D funding round of $14.7M in April 2010 with participation from all previous investors as well as new investors CompuCredit and TomorrowVentures.[25] TomorrowVentures is an investment vehicle funded by Google Executive Chairman Eric Schmidt.[26]
Bloomberg BusinessWeek reported on November 11, 2010, that Prosper was seeking additional funding[27] and Prosper received an additional funding infusion in a Series E round on June 3, 2011. According to Prosper's SEC filing, the company raised $17.15 million by selling additional shares at an average of approximately $0.738/share. Series E investors included Draper Fisher Jurvetson, Crosslink Capital, Accel Partners, Agilus Ventures and TomorrowVentures.[28]
In January 2013, Prosper received $20 million in funding led by Sequoia Capital,[29]
2025 Data breach
On 18 September 2025, Prosper announced that it had detected unauthorised access to their systems.[34] According to cybersecurity researcher Troy Hunt from Have I Been Pwned?, the breach impacted 17.6 million unique email addresses as well as other customer data including dates of birth, names, credit status information, government issued IDs, IP addresses and physical addresses.[35] Responding to an inquiry by The Register, Prosper stated it was not able to validate the claim made by Hunt, as their own investigation into the breach was still ongoing.[36]
