Credit Derivatives: An Introduction to CDS and CDOs

Table of Contents

  1. Introduction: What Are Credit Derivatives?

  2. credit derivativesHow Credit Default Swaps (CDS) Work

  3. Understanding Collateralized Debt Obligations (CDOs)

  4. Credit Derivatives in Risk Transfer & Market Context

  5. Risks, Misconceptions, and Lessons from History

  6. FAQs: Credit Derivatives Explained

  7. Conclusion: Why Credit Derivatives Matter

Introduction: What Are Credit Derivatives?

In the architecture of modern finance, few instruments illustrate both innovation and controversy as vividly as credit derivatives. These contracts are designed to transfer and manage credit risk, giving institutions flexibility in how they handle loans, bonds, and other credit exposures. At their core, credit derivatives are agreements whose value depends on the performance of debt instruments or the creditworthiness of an entity, such as a corporation or government.

The two most widely recognised forms of credit derivatives are:

  • Credit Default Swaps (CDS): Bilateral contracts that act like insurance against default. The buyer pays a premium to the seller, and in return the seller compensates the buyer if a “credit event” (such as default or bankruptcy) occurs.

  • Collateralized Debt Obligations (CDOs): Structured financial products that pool loans or bonds, then slice the pool into tranches with different levels of risk and return.

Both CDS and CDOs reflect the same underlying principle: credit risk can be packaged, priced, and transferred. However, the complexity of these products — and their role in past financial crises — makes understanding them essential for anyone interested in global markets.

Why Credit Derivatives Matter

The importance of credit derivatives lies in their dual role as risk-management tools and sources of market liquidity. They allow banks to move credit risk off their balance sheets, freeing up capital for new lending. Investors can use them to hedge exposure, speculate on creditworthiness, or diversify portfolios. In effect, credit derivatives extend the reach of financial markets into areas once confined to direct lending and bond investing.

This capacity links credit derivatives directly to the broader global economy. By redistributing risk, they enable banks to lend more freely, corporations to raise funds more confidently, and investors to allocate capital more efficiently. The growth of international trade, cross-border investment, and financial innovation would be far less dynamic without these instruments.

Our Beginner’s Guide to Derivatives explains how derivatives in general serve as tools for hedging and speculation. Credit derivatives are simply a specialised branch, focusing on debt and default risk.

A Brief Historical Context

While financial derivatives date back centuries, credit derivatives are a relatively recent innovation. They gained traction in the 1990s as banks sought ways to transfer credit risk and optimise regulatory capital requirements. J.P. Morgan’s “BISTRO” deal in 1997 is often cited as the first large-scale synthetic CDO, using CDS contracts to repackage credit exposures.

By the early 2000s, credit derivatives had become a multi-trillion-dollar market. According to the Bank for International Settlements (BIS), notional amounts outstanding grew at an exponential pace, reflecting demand from banks, hedge funds, and institutional investors.

The expansion was fuelled not only by innovation but also by the belief that advanced models could quantify and manage default risk. Tools like the Gaussian copula formula promised to measure the correlation of defaults across assets — but as Wired later reported, these models proved dangerously misleading when tested by the subprime mortgage crisis.

Our History of Derivatives Markets provides a broader context for this evolution, showing how derivatives have always adapted to the economic challenges of their time. Credit derivatives are the natural extension of this trend.

Credit Derivatives in Practice

The applications of credit derivatives span multiple sectors:

  • Banks and lenders use CDS to hedge against defaults in their loan books.

  • Investors buy CDS to speculate on a company’s creditworthiness, even without owning its bonds (“naked CDS”).

  • Portfolio managers use CDOs to diversify exposures, accessing a mix of higher-yielding assets while tailoring risk.

  • Governments and regulators monitor CDS spreads as indicators of sovereign credit risk.

These uses underscore the strong link between credit derivatives and global finance. They are not confined to abstract trading desks but influence borrowing costs, investment flows, and even government debt sustainability.

For more detail on how participants interact in derivatives markets, see our Key Participants in Derivatives Markets.

Risks, Misconceptions, and Lessons Learned

Despite their benefits, credit derivatives have a chequered reputation. Their complexity and opacity contributed to the 2008 financial crisis. Synthetic CDOs tied to subprime mortgages spread risk throughout the financial system, but when defaults rose, the interconnected web of CDS contracts magnified losses.

It is crucial to note, however, that the instruments themselves were not inherently flawed. As our Derivatives and Risk: Misconceptions explains, it was misuse, lack of transparency, and weak regulation that created systemic vulnerabilities.

Today, reforms such as Dodd-Frank in the US and EMIR in the EU have introduced mandatory clearing, stricter reporting, and higher capital standards. These measures reflect the recognition that credit derivatives, while powerful, require strong oversight to prevent misuse.

Credit Derivatives and the Global Economy

The broader link between credit derivatives and the global economy is clear. They:

  • Provide mechanisms for risk transfer across borders.

  • Influence lending capacity and capital allocation.

  • Enhance liquidity in credit markets.

  • Serve as barometers of systemic stress (e.g., CDS spreads on sovereign bonds).

Our Derivatives and Global Economy article reinforces this point: derivatives are not isolated tools but integral to the functioning of international finance.

Similarly, the rise of Weather and Energy Derivatives shows how derivatives are evolving to address new sources of risk. Credit derivatives are part of this larger ecosystem, reflecting finance’s adaptability in the face of uncertainty.

Why This Article Matters

This article provides a structured introduction to credit derivatives, focusing on CDS and CDOs. We will explore how they work, how they are used, and the risks they carry. We will also address the misconceptions that surround them and the lessons drawn from history.

By the end, you will understand why credit derivatives are not simply “exotic” instruments but fundamental to risk transfer, financial stability, and global market evolution. Whether you are a student, professional, or policymaker, understanding CDS and CDOs is essential to grasping the architecture of modern finance.

How Credit Default Swaps (CDS) Work

Among all forms of credit derivatives, the Credit Default Swap (CDS) is perhaps the most influential and widely recognised. It has been described as “insurance on debt,” but its applications, risks, and implications go far beyond conventional insurance.

Basic Structure and Mechanics

A CDS is a bilateral agreement between two parties:

  • Protection Buyer: Pays periodic premiums (like an insurance fee).

  • Protection Seller: Promises compensation if a predefined credit event occurs, such as default, bankruptcy, or debt restructuring.

For example, if a pension fund holds £100 million in corporate bonds, it can purchase CDS protection from a bank. If the corporation defaults, the bank compensates the fund, either by paying the notional value in cash or by accepting delivery of the defaulted bonds.

This arrangement highlights why CDS are core to credit derivatives. They enable lenders and investors to offload credit risk without selling the underlying bonds or loans.

Our Beginner’s Guide to Derivatives explains how derivatives function in general. CDS fit into this framework as instruments derived from the creditworthiness of an entity.

Types of CDS Contracts

  1. Single-Name CDS

    • Reference one entity (e.g., a corporation or sovereign).

    • Provide protection against that entity’s default.

  2. Index CDS

    • Cover a portfolio of entities (e.g., iTraxx in Europe, CDX in the US).

    • Allow investors to gain broad exposure to corporate or sovereign credit risk.

  3. Naked CDS

    • Purchased without owning the underlying debt.

    • Purely speculative, often controversial, as buyers profit from a borrower’s distress.

  4. Loan CDS

    • Linked specifically to syndicated loans rather than bonds.

How Settlement Works

Settlement of CDS contracts typically follows a credit event auction process, designed to ensure transparency and uniform pricing. After a default, market participants submit bids to establish recovery rates, which determine payouts.

This process standardises outcomes across the market, reducing disputes. Details of this are covered in Derivatives Trading: Exchange vs OTC Markets, since most CDS remain OTC but are increasingly standardised through ISDA protocols.

Applications of CDS

  • Hedging: Banks and asset managers hedge credit exposures in their portfolios.

  • Speculation: Traders bet on an entity’s likelihood of default.

  • Arbitrage: Investors exploit pricing differences between CDS spreads and bond yields.

  • Price Signals: Policymakers monitor sovereign CDS spreads as indicators of financial stability.

For example, during the European sovereign debt crisis, CDS spreads on Greece, Spain, and Italy were closely watched as measures of sovereign creditworthiness. This underscores how credit derivatives extend beyond private finance into public policy.

Market Size and Importance

At their peak in 2007, CDS contracts totalled over $60 trillion in notional value, dwarfing global GDP. By 2025, the CDS market remains robust at approximately $4–5 trillion, according to Investopedia. This scale highlights the systemic importance of credit derivatives.

Risks Associated with CDS

  • Counterparty Risk: If the protection seller defaults, the CDS becomes worthless — a major issue in 2008 with AIG.

  • Opacity: OTC trading limited transparency, making it hard to track exposures.

  • Speculation: Naked CDS amplified distress during crises, with critics arguing they worsened sovereign debt turmoil.

  • Systemic Impact: The interconnected web of CDS contracts can transmit shocks across markets.

Our Derivatives and Risk: Misconceptions discusses why derivatives like CDS are often unfairly blamed for crises, when in reality it is misuse and poor oversight that create systemic danger.

Lessons from CDS

The CDS market teaches that while credit derivatives are powerful tools for risk transfer, they require transparency, regulation, and prudent use. As reforms such as Dodd-Frank and EMIR show, the global financial system has adjusted to manage these risks, with central clearinghouses reducing counterparty exposures.

Understanding Collateralized Debt Obligations (CDOs)

The second major category of credit derivatives is the Collateralized Debt Obligation (CDO). CDOs are structured products that pool credit exposures and repackage them into tranches with varying levels of risk and return.

Structure of a CDO

A CDO typically involves:

  • Underlying Pool: A collection of loans, bonds, or mortgage-backed securities.

  • Tranches: Divided into senior, mezzanine, and equity layers.

    • Senior tranches: Safest, paid first, lower returns.

    • Mezzanine tranches: Medium risk and return.

    • Equity tranches: Highest risk, absorb first losses, but offer higher yields.

Investors choose tranches based on their risk appetite, making CDOs attractive to a wide spectrum of institutions.

Our Underlying Assets in Derivatives guide explains how different credit assets form the building blocks of CDOs.

Types of CDOs

  1. Cash CDOs: Backed by actual loans or bonds.

  2. Synthetic CDOs: Backed by CDS contracts rather than physical assets.

  3. CDO-squared: Pools of other CDO tranches, multiplying complexity.

Synthetic CDOs, pioneered by J.P. Morgan’s “BISTRO” deal in 1997, allowed banks to create exposure without holding loans directly. However, they also magnified risk during the subprime mortgage crisis.

For deeper context, see our History of Derivatives Markets, which traces how innovation has repeatedly reshaped financial products.

Applications of CDOs

  • Risk Diversification: Investors gain exposure to diversified pools of credit.

  • Regulatory Capital Relief: Banks move risk off their balance sheets.

  • Yield Enhancement: CDOs allow investors to access higher returns through mezzanine and equity tranches.

These applications show how credit derivatives like CDOs create flexibility in capital allocation and support global lending activity.

Risks and Controversies

CDOs became infamous during the 2008 financial crisis. They were widely used to securitise subprime mortgages, with rating agencies often assigning AAA ratings to senior tranches despite high underlying risks.

Problems included:

  • Complexity: Investors often misunderstood underlying exposures.

  • Correlation Risk: Defaults in mortgages were more correlated than models predicted.

  • Over-Reliance on Models: The Gaussian copula formula, once seen as a breakthrough, underestimated systemic vulnerabilities (Wired).

  • Leverage: CDO-squared instruments amplified losses.

Our Derivatives and Global Economy explains how failures in credit derivatives like CDOs reverberated across the global financial system, triggering a worldwide recession.

Regulation and Lessons Learned

Reforms post-2008 addressed many of these weaknesses:credit derivatives

  • Higher capital requirements for banks holding CDOs.

  • Stricter disclosure rules for structured products.

  • Reduced reliance on credit ratings for regulatory capital.

These measures reflect recognition that while credit derivatives like CDOs have legitimate uses, they require transparency and oversight.

CDOs Today

While the issuance of traditional CDOs has declined since 2008, structured products have not disappeared. Variations such as Collateralized Loan Obligations (CLOs) — backed by corporate loans rather than mortgages — remain widely used. CLOs are seen as safer due to better underwriting and stricter oversight, but they reflect the same principles of credit risk pooling and tranching.

This continuation underscores that credit derivatives are not relics of the past but enduring tools adapted to new contexts.

Credit Derivatives in Risk Transfer & Market Context

The central purpose of credit derivatives is risk transfer. Unlike traditional lending, where the lender bears the credit risk until maturity, credit derivatives allow that risk to be separated from the asset itself and passed to another party. This flexibility has profound implications for the financial system and the global economy.

Risk Transfer in Practice

Credit derivatives give financial institutions a mechanism to manage credit exposures dynamically:

  • Banks can lend to borrowers while simultaneously hedging default risk through CDS. This frees up regulatory capital and supports further lending.

  • Investors can hold bonds but use CDS to protect against potential losses. This allows them to gain yield while mitigating downside risk.

  • Insurance companies and hedge funds may act as protection sellers, collecting premiums in exchange for assuming credit risk.

This system enables risks to be spread more widely, linking credit derivatives directly to the efficiency and stability of global finance.

For a foundation on how underlying instruments shape derivative markets, see our Underlying Assets in Derivatives guide.

Enhancing Capital Efficiency

One of the key contributions of credit derivatives is enhancing capital efficiency for banks. By transferring risk off their balance sheets, institutions can reduce the regulatory capital they are required to hold, freeing resources for new loans and investments.

This mechanism was particularly attractive in the 1990s and early 2000s, when credit derivatives were promoted as tools for optimising bank capital under Basel rules. While effective in theory, the misuse of this principle during the subprime mortgage boom created excessive risk-taking.

Our Derivatives and Global Economy article explains how derivatives overall interact with global financial stability, and credit derivatives exemplify this dynamic.

Supporting Market Liquidity

The existence of standardised CDS indices has added liquidity to credit markets. Instruments such as CDX (North America) and iTraxx (Europe) allow investors to trade broad credit exposures efficiently. These indices have become benchmarks for pricing credit risk globally.

Liquidity in credit derivatives markets ensures that participants can enter and exit positions more easily, which in turn stabilises corporate bond and loan markets. This deepens the integration between credit derivatives and the wider financial system.

For more detail on how participants drive liquidity, see Key Participants in Derivatives Markets.

Price Discovery and Transparency

CDS spreads are widely used as indicators of credit risk. Rising spreads suggest increasing default probability, while narrowing spreads reflect improved creditworthiness. These signals are closely monitored by investors, regulators, and policymakers.

For example, during the European sovereign debt crisis, CDS spreads on countries like Greece provided early warnings of distress before bond yields spiked. This shows how credit derivatives function as leading indicators in global markets.

The CFTC notes that derivatives often enhance transparency in pricing, even if traded OTC, because they aggregate market expectations into a single figure.

Interconnectedness with Other Derivatives

It is important to recognise that credit derivatives do not exist in isolation. They interact with other instruments:

  • Equity derivatives reflect company valuations, while CDS reflect credit risk.

  • Interest rate swaps influence the cost of borrowing, which in turn impacts creditworthiness.

  • Structured products like CDOs integrate multiple credit derivative contracts with traditional securities.

This interconnectedness illustrates how credit derivatives are woven into the broader web of financial innovation. For background, our Types of Derivatives article outlines the four foundational instruments from which credit derivatives evolved.

Risks, Misconceptions, and Lessons from History

While credit derivatives provide undeniable benefits, they have also been associated with some of the greatest financial crises of recent decades. Misuse, opacity, and overconfidence in models transformed them from stabilising tools into amplifiers of systemic risk. Understanding these risks and misconceptions is essential to appreciating their role today.

Common Risks in Credit Derivatives

  1. Counterparty Risk

    • CDS rely on protection sellers honouring commitments. In 2008, AIG’s inability to meet CDS obligations became a flashpoint of the crisis.

    • While central clearing has reduced this risk, many contracts remain OTC.

  2. Model Risk

    • Complex models used to value CDOs underestimated default correlations. When mortgage defaults rose, losses cascaded across tranches thought to be uncorrelated.

    • As Wired reported, reliance on the Gaussian copula gave false confidence to rating agencies and investors.

  3. Liquidity Risk

    • In times of stress, CDS markets can become illiquid, with spreads widening dramatically. This exacerbates volatility rather than dampening it.

  4. Leverage Risk

    • Synthetic CDOs and naked CDS allowed investors to take large exposures with little capital. This leverage magnified losses and destabilised markets.

Misconceptions About Credit Derivatives

Our Derivatives and Risk: Misconceptions guide stresses that credit derivatives themselves are not inherently dangerous. Common misconceptions include:

  • “Credit derivatives caused the 2008 crisis.”
    In reality, it was misuse and lack of oversight. Poor lending practices, overreliance on ratings, and weak regulation were root causes.

  • “All CDOs are toxic products.”
    While mortgage-linked CDOs contributed to the crisis, other forms such as CLOs (Collateralised Loan Obligations) continue to play valuable roles in financing corporate debt.

  • “Credit derivatives are purely speculative.”credit derivatives
    In fact, many CDS contracts are used legitimately by banks, pension funds, and insurers to hedge exposures. Speculators add liquidity but are not the only participants.

Lessons from the 2008 Financial Crisis

The 2008 global financial crisis was a watershed moment in the history of credit derivatives. The widespread use of synthetic CDOs magnified subprime mortgage exposure across the world. When defaults rose, the interconnected web of CDS contracts amplified losses, creating systemic instability.

As documented in the Financial Crisis Inquiry Commission report, credit derivatives were a major transmission channel of risk. However, the lesson is not that these instruments are inherently bad, but that transparency, regulation, and risk awareness are essential.

Post-Crisis Reforms

Reforms introduced after 2008 reshaped credit derivative markets:

  • Mandatory clearing for standardised CDS through central counterparties.

  • Higher capital requirements for banks holding complex credit products.

  • Improved disclosure for structured products.

  • Reduced reliance on credit ratings, with regulators pushing for independent risk assessment.

Our Derivatives Trading: Exchange vs OTC Markets resource explains why moving more credit derivatives onto exchanges or clearinghouses was a critical step in enhancing transparency.

Continuing Importance of Credit Derivatives

Despite past controversies, credit derivatives remain vital. Today, they are used to:

  • Hedge sovereign and corporate debt exposure.

  • Provide pricing signals on global creditworthiness.

  • Support investment in diversified credit products like CLOs.

Their survival and adaptation demonstrate their enduring relevance. As Investopedia explains, while CDOs tied to subprime mortgages have faded, new forms of structured credit continue to play important roles in finance.

FAQs: Credit Derivatives Explained

 

Q1: What are credit derivatives?

Credit derivatives are financial contracts that allow risk associated with debt instruments — such as bonds or loans — to be transferred between parties. The most common types are Credit Default Swaps (CDS) and Collateralized Debt Obligations (CDOs). For a broad overview of derivatives, see our Beginner’s Guide to Derivatives.

Q2: How do CDS differ from insurance?

While CDS function similarly to insurance by compensating in the event of default, they differ in two key ways:

  1. They can be bought even if the buyer does not own the underlying debt (“naked CDS”).

  2. They are tradable financial contracts rather than regulated insurance policies.
    See Investopedia: Credit Default Swaps for details.

Q3: What caused the 2008 crisis — credit derivatives or poor regulation?

A common misconception is that credit derivatives alone caused the 2008 financial crisis. In reality, the crisis was fuelled by excessive risk-taking, poor lending standards, and regulatory failures. Instruments such as synthetic CDOs amplified exposures, but misuse, opacity, and leverage were the deeper issues. Our Derivatives and Risk: Misconceptions explains this further.

Q4: Are all CDOs dangerous?

No. While mortgage-backed CDOs contributed to systemic risk, other products such as CLOs (Collateralised Loan Obligations) continue to play useful roles in financing corporate debt. The key difference lies in underwriting standards, asset quality, and transparency.

Q5: Why are credit derivatives important today?

Credit derivatives remain vital for hedging, price discovery, and capital efficiency. They are closely monitored by policymakers as indicators of systemic risk. For example, sovereign CDS spreads are widely used as barometers of national creditworthiness.

Q6: How do credit derivatives connect with the global economy?

They support cross-border investment, provide stability in global lending, and enhance liquidity in international markets. Our Derivatives and Global Economy article highlights the ways in which derivatives integrate financial systems worldwide.

Bringing It All Together: Why Credit Derivatives Matter

The story of credit derivatives is a story of both promise and peril. These instruments revolutionised the way credit risk is managed, offering unprecedented flexibility and efficiency. Yet they also revealed how innovation, when misused, can destabilise the very system it aims to strengthen.

The Positive Role of Credit Derivatives

When used responsibly, credit derivatives bring significant benefits:

  • Risk Transfer: CDS allow lenders to hedge default risk, while CDOs diversify exposures across tranches.

  • Capital Efficiency: Banks can free up resources by transferring risk, enabling more lending to businesses and households.

  • Liquidity and Transparency: CDS spreads provide real-time signals of credit risk, guiding investors and policymakers.

  • Global Integration: By enabling risk transfer across borders, credit derivatives strengthen the link between local credit markets and the global economy.

These functions underscore why credit derivatives remain central to modern finance.

The Dark Side: Risks and Systemic Failures

The misuse of credit derivatives, particularly during the 2000s, demonstrated their potential to magnify instability:

  • Leverage: Synthetic CDOs enabled vast exposures with minimal capital, multiplying losses during downturns.

  • Opacity: OTC trading made it nearly impossible to track risk concentrations.

  • Mispricing: Rating agencies underestimated correlations in mortgage defaults, leading to widespread misvaluation.

  • Contagion: Failures in credit derivatives markets transmitted shocks across the global financial system.

As the Financial Crisis Inquiry Commission concluded, these weaknesses turned what might have been a contained crisis into a global recession.

Lessons Learned and Reforms

The lessons of 2008 have reshaped the landscape of credit derivatives:

  • Central Clearing: Standardised CDS now settle through clearinghouses, reducing counterparty risk.

  • Transparency: Trade repositories provide regulators with visibility into exposures.credit derivatives

  • Stricter Capital Rules: Banks face higher capital charges for holding complex structured products.

  • Improved Governance: Reliance on credit ratings has been curtailed, encouraging independent risk assessment.

Our Derivatives Trading: Exchange vs OTC Markets explains how shifting more contracts into transparent venues has been a cornerstone of reform.

Continuing Relevance in Global Finance

Despite past controversies, credit derivatives remain deeply embedded in the financial system. Sovereign CDS spreads are now essential tools for policymakers monitoring national debt markets. CLOs are widely used to finance corporate lending, and index CDS continue to provide liquidity for institutional investors.

Moreover, the adaptability of credit derivatives ensures their continued relevance. As Investopedia notes, while certain CDO structures have faded, new variations tailored to safer assets have emerged.

Broader Context: Credit Derivatives and the Global Economy

The enduring importance of credit derivatives becomes clear when we consider their role in the global economy:

  • They provide tools to hedge risks in cross-border finance.

  • They influence borrowing costs for corporations and governments.

  • They serve as early-warning signals of systemic distress.

  • They underpin liquidity in international debt markets.

Our Derivatives and Global Economy resource reinforces this point: derivatives are not peripheral instruments but integral to global financial architecture.

Professional Relevance: Education and Training

For professionals, understanding credit derivatives is no longer optional. Courses and certifications are evolving to ensure that practitioners grasp both the mechanics and systemic implications of CDS and CDOs. As Benzinga highlights, training in derivatives is setting new benchmarks in risk management. Barchart likewise notes that standards are being reshaped globally.

Professionals who master credit derivatives not only protect portfolios but also contribute to the stability of the global financial system.

Looking Ahead: Innovation and Future Challenges

The future of credit derivatives will likely involve:

  • Green and Sustainable Finance: Credit derivatives may be adapted to support ESG-linked lending.

  • Digital Assets: New forms of tokenised debt and blockchain-based CDS may emerge.

  • Global Risk Integration: As emerging markets expand, credit derivatives will play a greater role in integrating them into the global economy.

Our Weather and Energy Derivatives piece shows how financial innovation continually evolves to address new risks. Credit derivatives are part of that same evolutionary story.

Final Thoughts

In conclusion, credit derivatives represent both the power and peril of financial innovation. They have transformed how credit risk is managed, reshaped global lending, and provided vital signals for policymakers. At the same time, their misuse has highlighted the dangers of complexity, leverage, and opacity.

The challenge for regulators, professionals, and institutions is not to reject credit derivatives but to use them wisely. With proper oversight, transparency, and education, these instruments can remain pillars of stability in the financial system. Without such care, they risk becoming instruments of instability once again.

Ultimately, the enduring relevance of credit derivatives lies in their adaptability. Just as they evolved from simple CDS contracts into complex structured products, they will continue to evolve to meet the needs of a changing global economy. The lessons of history remind us that their potential is immense, but so too are the responsibilities that come with them.

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