Which 2008 stock-market crash was triggered by the collapse of Lehman Brothers?

The 2008 stock-market crash associated with the collapse of Lehman Brothers was part of the global financial crisis.

Lehman Brothers filed for bankruptcy on September 15, 2008, after failing to secure a buyer or government-backed rescue. The filing intensified a crisis already driven by losses on US mortgages, falling house prices, complex securitized debt, and severe distrust between financial institutions.

Stock markets plunged as banks, companies, and investors feared further failures and a deep recession. Governments and central banks introduced emergency lending, bank recapitalizations, guarantees, and stimulus measures. The crisis spread far beyond the United States through global banking and trade links.

The event is often called the 2008 financial crisis, although its roots appeared earlier and its economic effects continued afterward. Lehman’s failure was a major accelerant rather than the sole cause. The crisis also led to stronger financial regulation, including the US Dodd–Frank Act of 2010.