The Big Short

"The problem wasn't confined to individual stocks.

"The problem wasn't confined to individual stocks. The Internet bubble had burst, and yet house prices in San Jose, the bubble's epicenter, were still rising." A brewing disaster. The subprime mortgage crisis emerged from a combination of factors that created a perfect storm in the financial markets. Low interest rates, relaxed lending standards, and a booming housing market led to a surge in subprime mortgages – loans given to borrowers with poor credit histories. Systemic failures. Financial institutions packaged these risky loans into complex securities, which were then sold to investors worldwide. The assumption was that housing prices would continue to rise indefinitely, and that the risk was spread out enough to be negligible. This assumption proved catastrophically wrong. Key players in the crisis: Mortgage lenders Investment banks Credit rating agencies Regulators Homeowners

"The constant argument over the value of the shares of some major publicly traded company has very little value, as both buyer and seller can see the fair price of the stock on the ticker, and the broker's commission has been driven down by competition." Financial alchemy. Wall Street firms created increasingly complex financial instruments, such as collateralized debt obligations (CDOs), to repackage and resell subprime mortgages. These instruments were so complicated that even many industry insiders didn't fully understand them. Illusion of safety. The complexity of these instruments created an illusion of safety, as they were often given high credit ratings despite being based on risky underlying assets. This false sense of security led to massive over-investment in what were essentially ticking time bombs. Examples of complex financial instruments: Mortgage-backed securities (MBS) Collateralized debt obligations (CDOs) Credit default swaps (CDS) Synthetic CDOs

"You know how when you walk into a post office you realize there is such a difference between a government employee and other people," said Vinny. "The ratings agency people were all like government employees." Conflict of interest. Credit rating agencies like Moody's and Standard & Poor's played a crucial role in the crisis by giving high ratings to risky mortgage-backed securities. These agencies were paid by the very banks whose products they were rating, creating a clear conflict of interest. Flawed models. The rating agencies relied on flawed models that didn't account for the possibility of a nationwide decline in housing prices. They also failed to adequately assess the risks of the new, complex financial instruments being created by Wall Street. Problems with credit rating agencies: Paid by issuers, not investors Lack of accountability Outdated risk assessment models Overreliance on historical data