Crisis wipes $1 trillion from financial stocks

Banks and brokerages began the week lower on the same fears that have been proven toxic since last summer in the ongoing credit crisis. The financial sector was hit with a confluence of troubles on Monday: cautious remarks from a Federal Reserve official and new capital concerns at Freddie Mac and Fannie Mae.

The drop in names like Lehman Brothers, Morgan Stanley and Merrill Lynch caused the financial section of the Standard & Poor's 500 index to lose almost $150 billion in value on Monday, according to the rating agency. That means S&P 500's 85 financial components have lost some $1.3 trillion since the sector reached a high last October.

Even more startling is that shares of 35 of the companies, which include insurers, have lost more than half their value so far this year. The financial sector used to be the index's main driver, and many economists believe that the broader market will rise or fall on their health.

"Some would argue that perhaps the sell-off in financials is overdone, but at the same time there is just much uncertainty out there about write-offs, loan losses, and how bad the housing market is," said Jim Herrick, a director of equity trading at Baird & Co. "For a period of time the pain was in the big money center banks, but now it's spreading."

Fannie and Freddie fell sharply after Lehman Brothers analyst Bruce Harting said the two government-backed lenders might need to raise billions of dollars in new capital. Both are facing a proposed change to accounting standards that would require financial services firms move bonds backed by pools of loans, also known as securitizations, off their balance sheets.

If this rule is passed, it would end Freddie and Fannie's primary source of generating new revenue. Harting said Fannie Mae would need to raise $46 billion in cash to meet capital requirements, while Freddie Mac would need $29 billion.

The broader financial sector was hurt after San Francisco Federal Reserve President Janet Yellen said problems in the housing market and banking system could get even worse before the economy recovers. Global banks and brokerages have lost nearly $300 billion from investments in mortgage-backed securities and other risky investments since the credit crisis began one year ago.

And there are fresh signs that Wall Street's biggest investment houses are having trouble navigating through volatile markets.

Goldman Sachs Group Inc., the world's biggest investment bank, disclosed in a regulatory filing that it lost at least $100 million on nine trading days during the second quarter. Goldman reported that total trading revenue in the second quarter fell 17 percent to $4.87 billion, according to the filing.