Asset Quality Misrepresentation by Financial Intermediaries

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Document Type	General
Publish Date	14/06/2023
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Introduction

This study examines the role of financial intermediaries in the securitization of mortgages, and specifically how those intermediaries may misrepresent the quality of underlying assets. The authors focus on the non-agency residential mortgage-backed securities (RMBS) market in the United States, a market of roughly US$2 trillion at its peak, and investigate how contractual disclosures made by financial intermediaries about the assets backing these securities were systematically inaccurate. Stanford Graduate School of Business+3NBER+3SSRN+3

The core argument is that financial intermediaries — which include loan originators, underwriters, trust sponsors, and other parties involved in the packaging and sale of mortgage pools — disclosed to investors loan-level characteristics that diverged meaningfully from actual loan characteristics. In other words, the buyers of these securities received false or misleading information about the true asset quality of the collateral being securitized. SSRN+1

The authors construct two measurable dimensions of asset-quality misrepresentation by financial intermediaries:

Misreported occupancy status — that is, loans declared as being owner-occupied when in fact the borrower did not reside in the property as a principal residence. NBER+1
Misreported second liens — that is, loans declared as having no subordinate liens when in fact there was a simultaneously originated junior lien, thereby increasing risk exposure. NBER+1

By matching loan-level data disclosed to investors with credit-bureau data on actual borrower and collateral characteristics, the authors find that about one out of every ten loans in their matched sample exhibited one or more such misrepresentations by financial intermediaries. NBER+1

financial intermediaries

Moreover, the misrepresentation by financial intermediaries had a material impact on loan performance: loans with misrepresented characteristics experienced delinquency rates more than 60 % higher than otherwise similar loans. SSRN+1

Importantly, the authors show that the pricing of securities did not appear to reflect the presence of misrepresentation by financial intermediaries. That is, even though the collateral quality had been mis‐stated, the securities were not issued at a discernible discount relative to comparable pools without misrepresentation, implying that the market did not fully price in the additional risk borne by investors. IDEAS/RePEc+1

The study also finds that misrepresentation by financial intermediaries was not limited to “small or disreputable” actors: rather, it was widespread across many major underwriters and issuers, indicating that reputation alone did not deter the practice. NBER+1

The authors further investigate potential determinants of misrepresentation by financial intermediaries: they explore whether management incentives, risk‐management quality, or regional regulatory oversight constraints explain variation in misrepresentation rates. They find that these factors do not strongly explain the observed variation: the propensity to misrepresent appears to cut across a wide range of intermediaries and is not strongly correlated with typical governance metrics. NBER

Finally, the authors estimate the potential scope of misrepresentation by financial intermediaries. Even focusing only on the two measurable dimensions (occupancy and second lien), the authors conservatively estimate that the amount of loans subject to possible forced repurchase by intermediaries could have been up to US$160 billion. NBER+1

The paper concludes with broader implications: because financial intermediaries are critical nodes in the transmission of credit risks from originators to investors, misrepresentation undermines the integrity of securitisation markets and, by extension, the financial system. The findings suggest that existing disclosure, contracting and regulatory mechanisms were insufficient to prevent substantive mis‐reporting of asset quality by financial intermediaries, which may have contributed to fragility in the run-up to the 2007-09 financial crisis. IDEAS/RePEc+1

We quantify the extent to which buyers received false information about the true quality of assets in contractual disclosures by intermediaries during the sale of mortgages in the $2 trillion nonagency market. We construct two measures of misrepresentation of asset quality misreported occupancy status of the borrower and misreported second liens by comparing the characteristics of mortgages disclosed to the investors at the time of sale with actual characteristics of these loans at that time that are available in a dataset matched by a credit bureau. About one out of every ten loans has one of these misrepresentations.

Discussion of Key Themes

1. The role of financial intermediaries in information transmission

Financial intermediaries perform essential functions in securitization: they originate or aggregate loans, package them into pools, underwrite securities, and communicate pool characteristics to investors via disclosures (e.g., prospectuses). The study emphasizes that errors or misrepresentations in those disclosures by intermediaries can be critically important. Because many investors rely on the information transmitted by intermediaries rather than verifying collateral themselves, the intermediary’s role in ensuring accurate information is central. The authors argue that the increased complexity of credit intermediation – with more layers of originators, aggregators, and securitizes – heightened the risk that the traditional checks and balances (monitoring, reputation, contracting) might not suffice. NBER+1

2. Misrepresentation vs. mere asymmetric information

A key insight is the distinction between classic asymmetric information (where buyers simply know less than sellers) and active misrepresentation by financial intermediaries (where sellers disclose false information). The paper focuses on the latter: the intermediaries disclosed loan characteristics that did not match actual characteristics available in credit bureau records. This implies deliberate or systematic distortion of information by intermediaries, rather than mere lack of knowledge or weaker screening. NBER+1

3. Measurement of asset‐quality misrepresentation

By utilising matched datasets (loan disclosures to investors and actual credit bureau loan/property records), the authors develop two quantifiable misrepresentation metrics (occupancy misreporting and undeclared second lien). The fact that they can show empirically that misreported loans had worse outcomes supports the interpretation that the misrepresentation was meaningful and harmful. This provides robust evidence of how financial intermediaries may misstate risk. It also provides a methodological contribution: measuring misrepresentation at scale in securitization. SSRN+1

4. Pricing and market discipline of intermediaries

One might expect that if financial intermediaries misrepresent collateral quality, then investors would demand a discount or higher yield on securities with higher risk of misrepresentation; likewise intermediaries might face reputational or legal consequences. However, the authors find no evidence that misrepresentation was priced – securities with misrepresented collateral were not issued at a discernible premium (i.e., discount) relative to comparable securities. Also, reputational constraints did not appear sufficient: large, reputable intermediaries exhibited similar misrepresentation rates. This suggests that market discipline and reputational insurance did not constrain misrepresentation effectively. NBER

5. Economic magnitude and systemic implications

While the two misreported dimensions analyzed are relatively easy to measure, the authors emphasize that they likely understate the broader scope of misrepresentation by financial intermediaries. Their estimate of up to US$160 billion of potential repurchase liability for intermediaries underscores the systemic scale. Moreover, misrepresentation by intermediaries can distort the allocation of capital and exacerbate crises: investors underestimate risk, credit is mis‐priced, and the broader financial system becomes vulnerable. The paper argues that the behavior of intermediaries in securitization is central to the build-up of the 2007-09 crisis. IDEAS/RePEc+1

6. Governance, incentives and regulation of financial intermediaries

The authors explore possible explanations for why financial intermediaries misrepresent asset quality. They examine whether misrepresentation correlates with management incentives (e.g., compensation), risk‐management practices, or regulatory environment. They find little strong correlation, suggesting that misrepresentation was pervasive and not limited to firms with the weakest governance. This finding implies that changes in disclosure rules, contracting and supervision of intermediaries may be required, not just firm‐specific reforms. The authors call for regulatory and market mechanisms to better monitor and align the incentives of intermediaries in securitization. NBER

Implications for Policy, Regulation, and Practice

From the perspective of the role of financial intermediaries, this study holds several important implications:

Disclosure and transparency: Since intermediaries may misrepresent asset characteristics, improving the accuracy, verifiability and enforcement of disclosures is vital. Regulators and investors should demand better verification of collateral data and hold intermediaries accountable for mis‐statement.
Contracting and liability: The paper highlights the potential liability of intermediaries (e.g., forced repurchases). Incentivizing intermediaries to internalize risk (via warranties, repurchase obligations, and reputation) may help align incentives.
Market discipline limitations: Reliance on reputational constraints or investor due diligence alone may not suffice for intermediaries, given the widespread nature of misreporting found. Thus regulatory oversight of intermediaries’ disclosure processes and internal controls may be required.
Systemic risk considerations: Because intermediaries serve as conduits between originators and investors, misrepresentation by intermediaries can propagate risk across the financial system. Regulators should monitor intermediary behavior in securitization markets as part of macroprudential oversight.
Incentive structures at intermediaries: While the authors did not find strong governance correlates of misrepresentation, it remains important to ensure that compensation, risk management and internal controls at intermediaries align with long-term asset quality and investor interests.
Investor awareness and due diligence: Investors purchasing securities from intermediaries should recognise that disclosures may be flawed. They should demand robust collateral‐level data, third-party audits, and stronger covenants with intermediaries.

Limitations and Areas for Further Research

While the paper is rigorous, some limitations and future research avenues are worth noting:

The analysis focuses on two measurable misrepresentation dimensions; other dimensions (e.g., borrower credit score misreporting, property valuation errors, interest rate resets) are not covered, so the findings may understate overall misrepresentation by intermediaries.
The study focuses on the pre-crisis US non-agency RMBS market; whether the findings generalize to other markets (commercial real estate, corporate credit, global markets) and later periods remains open.
The paper documents correlations (e.g., between misrepresentation and delinquency) but the causal mechanisms driving intermediaries to misreport (e.g., organizational culture, agency conflicts, originator-securitize relationships) merit deeper qualitative and structural investigation.
Given the role of intermediaries in securitization, future research could explore the interplay of intermediaries’ balance-sheet incentives, regulatory capital arbitrage, and reputational constraints in driving asset‐quality misrepresentation.
The regulatory implications could be studied further: for instance, how successful have post-crisis reforms (such as enhanced disclosure-verification, repurchase regimes, and stronger intermediary oversight) been in reducing misrepresentation by intermediaries?

Conclusion

The paper “Asset Quality Misrepresentation by Financial Intermediaries: Evidence from the RMBS Market” provides compelling empirical evidence that financial intermediaries in the securitization chain misrepresented key collateral attributes when selling mortgage-backed securities. The fact that roughly one in ten loans had misreported characteristics, that these misrepresentations correlated with significantly higher delinquency rates, and that securities with such misrepresentations were not issued at a discernible discount highlights a critical breakdown in the role of intermediaries in transmitting accurate information.

For the broader financial system, intermediaries have a pivotal role: they stand between originators and investors, package and distribute risk, and enable capital to flow from savers to borrowers. When the informational role of intermediaries fails, the consequences can be systemic: mispricing of risk, misallocation of capital, and increased fragility of financial markets.

In this context, the behavior of financial intermediaries is not merely a firm‐specific governance issue but a system‐wide concern. Regulators, investors, and practitioners need to treat intermediaries not just as passive conduits but as active agents whose incentives, disclosures, and structures matter for the integrity of financial markets. The study underscores that for securitization markets to function efficiently and safely, the asset disclosures of intermediaries must be accurate, verifiable and enforceable backed by liability or incentive mechanisms.

Finally, this work invites further investigation into the governance, compensation, structural and regulatory mechanisms that govern intermediaries, to ensure they faithfully fulfil their informational and risk‐transmission roles. The keyword Financial Intermediaries is central: understanding their behavior, incentives, and role is key to understanding why markets failed and how they might be reformed.

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