Saturday, May 8, 2010

Computer meltdown on Wall Street still baffles officials

Traders applauding Duncan L. Niederauer, chief of NYSE Euronext, on Friday. He had defended his exchange in an interview.

 The New York Times - A day after a harrowing plunge in the stock market, federal regulators were still unable on Friday to answer the one question on every investor’s mind: What caused that near panic on Wall Street?

Through the day and into the evening, officials from the Securities and Exchange Commission and other federal agencies hunted for clues amid a tangle of electronic trading records from the nation’s increasingly high-tech exchanges.

But, maddeningly, the cause or causes of the market’s wild swing remained elusive, leaving what amounts to a $1 trillion question mark hanging over the world’s largest, and most celebrated, stock market.

The initial focus of the investigations appeared to center on the way a growing number of high-speed trading networks interact with one another and with venerable exchanges like the New York Stock Exchange. Most investors are unaware that these competing systems have fractured the traditional marketplace and have displaced exchanges like the Big Board as the dominant force in stock trading.

The silence from Washington cast a pall over Wall Street, where shaken traders returned to their desks Friday morning hoping for quick answers. The markets remained on edge, as the uncertainty over what caused Thursday’s wild swings added to the worries over the running debt crisis in Greece.


In a joint statement issued after the close of trading, the S.E.C. and the Commodity Futures Trading Commission said they were continuing their review. And the two agencies indicated they were looking particularly closely at how different trading rules on different exchanges, which temporarily halted trading on some markets while activity in the same stocks continued on other markets, might have contributed to the problem.

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