NEW YORK, March 15: The US Federal Reserve Bank strongly intervened to avert a disaster at Bear Sterns Banking firm in order to quell a “domino theory” like downfall of many other financial institutions which could have been even worst than any other crisis in recent memory.

Wall Street firms like Bear Stearns conduct business with many individuals, corporations, financial companies, pension funds and hedge funds. They also do billions of dollars of business with each other every day, borrowing and lending securities at a dizzying pace and fuelling the wheels of capitalism, the New York Times said in an analysis.

The sudden collapse of a major player could not only shake client confidence in the entire system, but also make it difficult for sound institutions to conduct business as usual. Hedge funds that rely on Bear to finance their trading and hold their securities would be stranded; investors who wrote financial contracts with Bear would be at risk; markets that depended on Bear to buy and sell securities would screech to a halt, if they were not already halted.

“In a trading firm, trust is everything,” said Richard Sylla, financial historian at New York University told the Times. “The person at the other end of the phone or the trading screen has to believe that you will make good on any deal that you make.”

Commercial banks, mutual fund companies and other big financial firms with deep pockets would presumably weather such turmoil. Firms that traded extensively with Bear Stearns could be at great risk if the bank failed.

For individual customers, the Federal Deposit Insurance Corporation insures deposits up to $100,000. Furthermore, when a Wall Street firm fails, the Securities Investor Protection Corporation steps in to take over customer accounts.

The Fed’s action was intended simply to keep the financial markets functioning. Since various trading markets seized up in August, credit conditions have steadily worsened, and interest rate cuts, the main tool central bankers use to bolster the economy, have become less effective.

Policy-makers anticipated some of the problems now affecting the financial world. In 2006 and 2007, Timothy F. Geithner, president of the Federal Reserve

Bank of New York, asked major Wall Street institutions to gauge the impact on their portfolios if a large bank failed.

The volume of financial contracts that are not traded on any major exchanges has ballooned in recent years after the bailout of a big hedge fund, Long-Term Capital Management, in 1998. Now, much of the trading in derivative contracts tied to stocks and bonds takes place in unregulated transactions between financial institutions .Policy makers have been wrestling with questions about when and how they should provide assistance since the last major bailout of a tottering bank, Continental Illinois, in 1984. At the time, Continental was considered too big to fail without sending waves of losses through the financial system.

Regulators are facing an unprecedented and widespread deterioration in many markets. Last summer, the value of risky and exotic securities plummeted in value. Now, even top-rated securities once deemed as safe as Treasuries have hit the skids. Financial firms have written down more than $150bn of their assets. Some analysts are predicting that losses in various credit markets will reach $600 billion.