To continue selling mortgages, agencies that determine how risky a loan is gave high ratings to homebuyers regardless of their actual risk portfolio.

Before the Great Recession, lax requirements to get a mortgage resulted in mass defaults that left nearly 19 million homes vacant.

Since the 1990s, banks have sold some of the credit risk of their accounts to external investors, known as SRTs, or synthetic risk transfers

This means if the account defaults, the outside investors assume most of the risk in return for some regular payments, freeing up the bank's ledger. It is a form of insurance used by banks to allow them to free up capital. In 2024, nearly $100B worth of SRT notes were sold.

Watch Margot Robbie explain subprime mortgages—risky loans given to homebuyers with low credit scores or no income verification.

Watch Selena Gomez explain collateralized debt obligations in a clip from 'The Big Short.'

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Subprime lending practices, which fueled the housing bubble, surged after 2000.

Direct lending typically involves 'senior loans'

Direct lending, the most common subtype of private credit, typically involves senior loans which are secured by a company's assets. "Junior capital," on the other hand, is a type of private credit that is not secured by a company's assets, making it generally riskier than direct lending.

Borrowers were increasingly defaulting on private credit loans as of early 2026

Risks in private credit investing include the industry's lack of transparency and the ability of businesses to borrow more than a bank might allow against their debt. Some borrowers in early 2026, for instance, likely did not expect interest rates to be so high for so long, which could be contributing to an uptick in defaults.

Direct lending is the most common form of private credit

Other types include opportunistic credit, special-situations credit, mezzanine finance, venture debt, infrastructure debt, real estate debt, and more. All of these sources of capital technically create private transactions, so they can all call themselves private credit.

The shadow banking system is a group of intermediaries that operate outside of normal banking regulations

The nonbank financial intermediaries that make up the shadow banking system legally provide services that are similar to those of traditional commercial banks. Although the term isn't used as often as it once was, private credit firms are technically part of the shadow banking system, as are hedge funds, payday lenders, buy now, pay later companies, and more.

In 2008, the 'Big Short' mastermind Michael Burry made more than $700M.

Securitization has become common practice in home financing

When a homebuyer finances with a lender, they aren’t necessarily the one footing the bill. After a buyer secures a home loan, the lender can sell the loan to another financial institution or a private institution. That group can later sell that mortgage to investors. This is called securitization.

The movie adaptation of ‘The Big Short’ provided a visual for the 2008 housing bubble

A scene from "The Big Short" visualizes how Wall Street bundled shaky mortgages into complex housing bonds and sold credit default swaps on top of them—showing, step by step, how the structure of the 2008 housing bubble was vulnerable to collapse.

Before the modern banking system, most lending resembled private credit

Before the creation of the modern banking system, the majority of loans were negotiated directly between the lender and the borrower—effectively making them private credit transactions.

Why countries have credit ratings

Sovereign credit ratings work like national credit scores, measuring a country’s ability and willingness to repay its debt. Moody’s, S&P, and Fitch are the major agencies assigning these ratings, which influence borrowing costs and investor confidence.

A margin call is a way for traders to pay off debts by selling a security before they may be ready to do so.

Private credit is a nonbank loan made directly to a business

Similar to private equity, private credit is part of the private markets world. Both strategies offer illiquid, privately negotiated investments for privately held companies. Unlike private equity investors, however, private credit investors typically do not take ownership stakes in the companies they invest in.

How JPMorgan Chase became America's biggest bank

From the railroad and steel consolidations brokered by John Pierpont Morgan on Wall Street more than a century ago, to the repeal of Glass-Steagall, the financial crisis, and Jamie Dimon’s leadership, J.P. Morgan Chase has been at the center of finance for more than a century.

The private credit industry—which offers nonbank loans directly to businesses, particularly privately held midmarket companies—grew from a $250B asset class in 2010 to around $1.5T in early 2024.

The private credit industry offers nonbank loans directly to businesses, particularly privately held midmarket companies.

The 2008 financial system unraveled in a wave of speculation

Michael Lewis—author of the bestselling "The Big Short"—explains how a wave of speculation (among other factors) drove the 2008 collapse, from lenders issuing risky mortgages to Wall Street turning them into fragile securities. He also highlights the few outsiders who recognized the bubble and bet against it before the crash.

Tranches slice financial products into segments

Specifically, tranches are slices of securities (think: bonds or mortgages) divided by risk and characteristics to attract different investors with a variety of risk tolerances.

Investors need a 'margin account' to short sell stock

Margin accounts are leveraged accounts through brokerage firms that allow investors to make trades without the full amount of capital on hand. Similar to a secured loan, margin accounts often require some form of collateral and typically have a cap on how much investors can borrow. However, trading with a margin account is much riskier than a traditional investment account. Fees and charged interest are due on margin accounts, regardless of trade performance, meaning it's possible for investors to lose more money than just their initial investment.

Some semi-liquid private credit funds saw a surge in investor redemptions in early 2026

This raised red flags about the state of the private credit market at large. However, experts have cautioned that the idea that private credit is on the verge of collapse is overstated.

In March 2008, Bear Stearns was the first major bank to collapse in the Great Recession—leading to panic across the entire global financial system.

Some experts and investors think short selling—a strategy in which investors bet that a stock will drop in value—helps keep the market healthy.

Many hedge funds use short selling as an alternative investment strategy to offset risk

Hedge funds typically use a "long-short" investment strategy—where funds diversify by investing in a mix of long positions and short positions—to balance risk and maximize profits. Including short positions gives hedge funds some protection against downturns in the market, although the strategy can have uncapped losses for investors.

The bond market is where bonds and other debt securities are traded

Bonds are fixed-income investments allowing individuals to lend a specific amount of money to a large entity, like a government or corporation, for a set amount of time in return for interest paid out over the life of the loan. The bond market is widely considered a key economic barometer.

To avoid a total collapse of the housing market, the US government took control of the two leading mortgage companies, Fannie Mae and Freddie Mac.

BlackRock played an integral role in the Federal Reserve's response to the Great Recession, managing about $30B of hard-to-sell Bear Stearns assets on behalf of the New York Fed.

Credit reporting's earliest origins in the 1700s resemble a game of telephone, with rural merchants asking their most esteemed neighbors to vouch for them to sleuthing urban lenders.

Read about why bans on short selling are a controversial policy

Generally, short selling is legal, but regulations often restrict short positions when a stock has experienced a sharp price decline (more than 10% in one day). However, negative feedback loops in times of financial crisis have given short selling a bad reputation. The government has temporarily banned short selling during previous market downturns—like The Great Recession of 2008 and the early months of the COVID-19 pandemic—but experts argue whether those bans actually improved market stability or just distorted prices.

Passed in 2010 in the fallout of the Great Recession, the Dodd-Frank Wall Street Reform and Consumer Protection Act was the most significant financial reform since the Great Depression.

The concept of CDs dates back to the 1600s in Europe

Banks in the US started issuing CDs in the early 1800s as the banking system began to take shape following the Revolutionary War. The federal government did not formally insure CDs until the FDIC was formed in 1933.

Commodity trading is regulated by the CFTC to mitigate fraud and risk

Established in 1974, the CFTC regulates these markets (including swaps, futures, and certain types of options) to protect market participants from fraud, ensure fair trading conditions, and generally reduce financial risk.

Credit reporting started as a service for businesses rather than consumers

In the 1700s US economy, consumer credit reporting wasn't necessary. A loan to a farmer for agricultural supplies, for instance, would inevitably help them purchase both personal and business items.

Retail investors cannot directly invest in private credit funds—but other financial vehicles can offer exposure to the industry

For example, as some US regulations have loosened in recent years, retail investors have begun to get exposure to the private credit market via ETFs that invest in publicly traded financial vehicles with private credit exposure, such as BDCs.

Alternative investments have become more popular since the 2008 financial crisis

When the traditional markets crashed during the 2008 financial crisis, many people saw the value of their traditional investments plummet and began to look into alternatives as a result.

American International Group, one of the largest insurance companies in the world, received $182B from the federal government—the largest of any bailout in the wake of the Great Recession.