Why was Enron’s bankruptcy one of the largest in United States history?

Enron’s bankruptcy is considered one of the largest in United States history primarily due to the sheer scale of the company’s financial collapse. At the time of its filing for bankruptcy in December 2001, Enron Corporation held more than $60 billion in assets.123

The magnitude of this event was driven by several critical factors:

• Massive Accounting Fraud: The company engaged in years of systemic deception, using techniques like "mark-to-market" accounting and special purpose entities to hide billions of dollars in debt and failing operations from investors and regulators.14
• Investor and Employee Losses: As the fraud was exposed, Enron’s stock price plummeted from a high of $90 per share to less than $1, resulting in billions of dollars in losses for shareholders and devastating the 401(k) pensions of its employees.143
• Systemic Impact: The scandal led to the dissolution of Arthur Andersen LLP, one of the world's largest auditing firms, which had facilitated the deception.12

This collapse caused such significant damage to the financial world that it prompted the U.S. government to pass the Sarbanes-Oxley Act in 2002 to reform accounting standards and protect investors.143