MOST EXPENSIVE CORPORATE FRAUDS.

1. ENRON
Enron’s collapse in 2001 from a company worth $63.4 billion, to one seeking bankruptcy reorganization, came as a shock to the general public. Considered to be a major accounting failure, it led to the dissolution of Arthur Anderson, one of the world’s largest accounting firms also. Over 15,000 employees of the corporate had most of their savings in stock, which fell from $83.01 in early 2001 to $0.01 in October 2001.
2. BERNIE MADOFF
On June 29, 2009, Bernie Madoff was sentenced to 150 years in prison, the maximum sentence that could be given to anyone convicted of corporate fraud. He ran an amazing ‘Ponzi” scheme for his clients, showing falsified profits, and gains with the money that they had given him for investment. SEC authorities believe the actual net fraud will be between $ 14 - $17 billion.
3. SUBPRIME MORTGAGE CRISIS
This was not the crisis of a single corporate but it led to the demise of many other corporate. The repercussions can still be felt throughout the US and even Europe. It has had an adverse effect on most of the banks and financial institutions, and has led to large scale reform in the financial sector rules and regulations. It’s pertinent to mention that crisis had washed out trillion’s of dollar effecting USA and European banks at large.
4. SATYAM COMPUTERS
India’s biggest corporate scam was disclosed when Ramalinga Raju, the CEO of company declared that profits had been overstated for many years. Inflated bank figures, understated liabilities and over 10,000 non-existent employees were among the many fraudulent practices being indulged in to cross 7000 crone rupees.
5. WORLDCOM
On July 21, 2002, when WorldCom filed for bankruptcy under Chapter 11, it was USA’s largest corporate failure. The accounting scandal covered $ 11 billion and it seems the workings of the company were masked by painting a false picture of growing profits and margins. In 2004, it emerged from the bankruptcy proceedings with $5.7 billion in debt and $ 6 billion in cash.
6. BARLOW CLOWES
One of England’s largest corporate scandals, it led to the collapse of the company, after it was disclosed that it’s co-owner Peter Clowes, had spent over $100 million of his clients money in items such as luxury yachts, private aircrafts and cars. A gilts management service, in the 1980s, it controlled millions of pounds of it’s clients funds.
7. DAEWOO
Prior to is dismantling in 1999, Daewoo was the second largest corporate in Korea. It collapsed due to bad financial management, due to the worldwide financial crisis and due to growing labor unrest. The collapse led to losses in billions of dollars and became a political crisis.
8. FANNIE MAE and FREDDIE MAC
Before their collapse in 2008, these two companies owned more than half of USA’s $ 12 trillion mortgages. In September that year they had to be placed in conservatorship by Federal Housing Finance Agency, as “one of the most sweeping government interventions in private financial markets in decades”.
9. AIG
An American Insurance Company, AIG went into a crisis mode when in 2008, its credit rating were downgraded to below “AA’ levels and they were unable to access any funds to tide over their crisis. Once the 18th largest company in the world, it’s disclosure of financial losses and frauds, led to its downfall.
10. PHAR-MOR
In 1992, Phar-Mor had over 300 stores and over 25,000 employees. It ran a successful chain of discount drugstores throughout America, and it ran on a policy of small profits, but large quantities of merchandise. However, the owners in 1992 were accused of large scale embezzlement, deceptive inventories and fudged data.  (Sources by websites)