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Investment Banking

Lehman Brothers

Lehman Brothers was a 158-year-old Wall Street institution and the fourth-largest US investment bank when it filed the largest bankruptcy in American history on September 15, 2008, with $639 billion in assets and $613 billion in debts. Under CEO Richard Fuld it had loaded up on subprime mortgages and extreme leverage, funding itself day to day in the repo market. When the government declined to rescue it, its collapse froze the global financial system and helped trigger the Great Recession.

Bankruptcy Bankrupt High
Company
Lehman Brothers
Started
1850
Ended
2008
Assets it carried into the largest bankruptcy in US history
$639B
Collapse speed
Rapid
Preventability
High
Lesson transfer
Universal
Last reviewed
2026-07-24

Narrative

The story

The ambition

Lehman Brothers was one of the oldest and most storied names on Wall Street, a firm founded in 1850 that by 2008 had survived the Civil War, the Great Depression, and two world wars to become the fourth-largest investment bank in the United States, with some 25,000 employees worldwide. Under Richard "Dick" Fuld, the long-serving chief executive known as "the Gorilla of Wall Street," Lehman wanted to be a top-tier player in every profitable corner of modern finance.

The rise

The 1999 repeal of the Glass-Steagall Act, which had separated commercial and investment banking, opened the door, and Lehman charged through it into proprietary trading, securitization, derivatives, asset management, and above all real estate. It bet enormously on the American housing boom. Between 2003 and 2004 it acquired five mortgage lenders, including subprime specialists, and it turned home loans into bonds it sold on to investors around the world. By the end of its 2007 fiscal year it held roughly $111 billion in real-estate-related assets and securities, more than double the year before. For a while, Fuld looked like a genius, and he was paid like one, taking home nearly $500 million in compensation over his tenure.

The cracks

The model had two fatal weaknesses. The first was leverage: Lehman was financing a giant, illiquid balance sheet with a thin sliver of its own capital, so even a modest fall in asset values could wipe it out. The second was funding: it relied heavily on short-term "repo" agreements, borrowing billions each day to run its operations, which left it acutely vulnerable to any loss of confidence. When house prices fell and subprime borrowers defaulted, the mortgage bonds that Lehman had packaged and held turned toxic, and the firm was left with tens of billions of dollars in overvalued assets on its books that it could not sell.

The collapse

By the weekend of September 13-14, 2008, Lehman was finished. Six months earlier the government had forced the sale of the failing Bear Stearns, but this time Treasury Secretary Henry Paulson, stung by criticism for that rescue, declined to bail Lehman out. On the morning of September 15, 2008, Lehman Brothers filed for Chapter 11 bankruptcy with $639 billion in assets and $613 billion in debts, the largest bankruptcy filing in US history. That day the Dow Jones Industrial Average plunged more than 500 points, its steepest drop since markets reopened after the September 11 attacks.

The aftermath

Lehman's failure did not stay contained. A large money-market fund that held Lehman debt "broke the buck," its shares falling below a dollar for the first time, and a run spread through the $3.5 trillion money-market sector that companies relied on for daily financing. London hedge funds found their accounts frozen inside Lehman's UK arm. Financial institutions stopped trusting one another and markets seized up, bringing the global system to the brink. Within days the government reversed course and bailed out the insurer AIG for $85 billion, and Congress soon passed the $700 billion Troubled Asset Relief Program. Lehman's collapse became the defining moment of the 2008 crisis and the Great Recession that followed.

The lessons

Leverage is a promise to be solvent every single day, and a firm that funds long, illiquid bets with overnight borrowing has handed its survival to the confidence of others. Lehman's assets were not the problem so much as how it held them: too much debt against too little capital, financed by money that could vanish overnight. Pay is a signal, and a leader who extracts nearly half a billion dollars while building that fragility is being rewarded for taking risks the firm could not survive. But Lehman also teaches a harder, contested lesson about the system around a failing firm. In a densely interconnected financial network, one institution's collapse is never just its own, and the authorities learned in the worst possible way that they had no orderly means to wind down a giant. The debate over whether they were right to let Lehman go has never been settled, which is itself the lesson: when a system is that fragile, there may be no good options left, only the ones you failed to build a decade earlier.

Causal timeline

Failure Anatomy

  1. 2007

    A 158-year-old institution

    Founded in 1850, Lehman Brothers grew into the fourth-largest US investment bank with ~25,000 employees, led by CEO Richard Fuld. [1]

  2. 2004

    All-in on housing

    After the 1999 Glass-Steagall repeal, Lehman expanded into securitization and real estate, buying five mortgage lenders (2003-2004) and holding ~$111 billion in real-estate assets by end of fiscal 2007. [2]

    Excessive expansion
  3. 2008

    Leverage and repos

    Lehman financed its huge, illiquid balance sheet with thin capital and short-term repo borrowing, leaving it acutely exposed to any loss of confidence. [3] [4]

    Unsustainable economics
  4. 2008-09-14

    Toxic assets, no rescue

    As subprime borrowers defaulted, Lehman's mortgage bonds turned toxic, leaving tens of billions in overvalued assets, and the government (after rescuing Bear Stearns) declined to bail it out. [5] [7]

    Information failureExternal shock
  5. 2008-09-15

    The largest bankruptcy in US history

    On September 15, 2008, Lehman filed Chapter 11 with $639 billion in assets and $613 billion in debts; the Dow fell more than 500 points that day. [8]

  6. 2008-09

    Global contagion

    A money-market fund holding Lehman debt "broke the buck," the $3.5 trillion money-market sector froze, markets seized up, and the government soon bailed out AIG ($85B) and passed the $700B TARP. [9]

    External shock

Structured analysis

What Went Wrong

Root causes

Extreme leverage. Lehman financed a giant, illiquid balance sheet with a thin layer of its own capital, so even a modest fall in asset values threatened to wipe it out. [3] [4]

All-in on subprime real estate. After the 1999 Glass-Steagall repeal, Lehman bet enormously on housing, buying subprime lenders and holding ~$111 billion in real-estate assets by the end of fiscal 2007, which turned toxic when the market fell. [2] [5]

Contributing factors

Fuld's risk appetite. CEO Richard Fuld steered Lehman deep into subprime mortgages and high leverage while taking home nearly $500 million over his tenure, and is widely blamed for the collapse. [6]

Overvalued assets. Lehman carried tens of billions of dollars in overvalued mortgage-related assets it could not sell once confidence evaporated. [5]

Immediate trigger

No rescue, then bankruptcy. After rescuing Bear Stearns six months earlier, the government declined to bail out Lehman, and on September 15, 2008 the firm filed the largest bankruptcy in US history. [7] [8]

Visible symptoms

Unsellable toxic assets. Mortgage bonds Lehman had packaged and held turned toxic, leaving tens of billions in overvalued assets on its books that it could not offload. [5]

Warning signs

Doubling down on real estate. Lehman's real-estate-related assets grew to about $111 billion by the end of fiscal 2007, more than double the prior year, concentrating its risk as the housing boom peaked. [2]

The Bear Stearns warning. The forced sale of Bear Stearns in March 2008 showed investment banks funded on short-term borrowing were vulnerable, a warning Lehman did not escape. [7]

Affected groups

EmployeesInvestorsCommunitiesCustomers

Contested

Disputed points

Interpretations where credible accounts genuinely differ, presented as disputes, not settled facts.

Was Lehman's failure the disaster, or was the government's decision to let it fail the blunder? Several analysts argue the non-rescue (inconsistent after saving Bear Stearns and before saving AIG) is what turned a manageable crisis into a global one, while others hold Lehman was too insolvent for the Fed to legally save. The debate over whether letting Lehman fail was the right call has never been settled. [7] [9]

Unresolved

Keep reading

Evidence

Claims & sources

Every numbered marker in the analysis links to the claim it rests on, and each claim to its sources.

  1. [1]

    Founded in 1850, Lehman Brothers was a 158-year-old firm and the fourth-largest US investment bank with about 25,000 employees, led by CEO Richard "Dick" Fuld.

    High Fact Lehman Brothers declares bankruptcy The 2008 Crash: What Happened to All That Money?
  2. [2]

    After the 1999 Glass-Steagall repeal, Lehman expanded into securitization and real estate, acquiring five mortgage lenders in 2003-2004 (including subprime specialists) and holding roughly $111 billion in real-estate-related assets by the end of fiscal 2007, more than double the prior year.

    High Fact Lehman Brothers declares bankruptcy
  3. [3]

    Lehman financed a giant, illiquid balance sheet with a thin layer of its own capital, so even a modest fall in asset values threatened its solvency.

    Moderate Analysis What Made The Financial Crisis Go From Bad To Disaster? Three Lessons of the Lehman Brothers Collapse
  4. [4]

    Lehman relied heavily on short-term repo agreements, borrowing billions each day to fund operations, leaving it acutely vulnerable to any loss of confidence.

    Moderate Fact The 2008 Crash: What Happened to All That Money?
  5. [5]

    When house prices fell and subprime borrowers defaulted, the mortgage bonds Lehman had packaged and held turned toxic, leaving tens of billions of dollars in overvalued assets it could not sell.

    High Fact 25 People to Blame for the Financial Crisis: Dick Fuld Was The Sacrifice Of Lehman Worth It?
  6. [6]

    CEO Richard Fuld steered Lehman deep into subprime mortgages and high leverage, took home nearly $500 million in compensation over his tenure, and is widely blamed for the collapse.

    High Fact 25 People to Blame for the Financial Crisis: Dick Fuld
  7. [7]

    After forcing the sale of Bear Stearns six months earlier, the government (Treasury Secretary Henry Paulson) declined to bail out Lehman Brothers.

    High Fact The 2008 Crash: What Happened to All That Money? Lehman And The Financial Crisis: What Went Wrong?
  8. [8]

    On September 15, 2008, Lehman Brothers filed for Chapter 11 bankruptcy with $639 billion in assets and $613 billion in debts, the largest bankruptcy in US history, and the Dow fell more than 500 points that day.

    High Fact Lehman Brothers declares bankruptcy
  9. [9]

    Lehman's collapse triggered systemic contagion, with a money-market fund holding Lehman debt "breaking the buck," the $3.5 trillion money-market sector freezing, and the government soon bailing out AIG for $85 billion and passing the $700 billion TARP.

    High Fact The 2008 Crash: What Happened to All That Money? Three Lessons of the Lehman Brothers Collapse Was The Sacrifice Of Lehman Worth It?

Sources