FACTBOX: Stats about Wall Street's plunge on Monday

NEW YORK (Reuters) - Wall Street stocks plunged on Monday as fears about the U.S. financial system's stability surged after Lehman Brothers Holdings, Inc filed for bankruptcy and insurer AIG struggled to survive.

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Some stats about the day's rough ride:

S&P 500

* S&P 500 drops 59 points, 4.71 percent to close at 1,192.70

* Worst percentage decline for the S&P 500 since September 17, 2001, the first day the market reopened after the September 11 attacks

* First close under 1,200 for the S&P 500 since October 2005

* Worst day ever for S&P financials, down 10.27 percent. The previous record, set on April 14, 2000, was a drop of 7.73 percent

* The S&P 500 breaks through the July lows, seen as key technical support levels

* Biggest S&P 500 point drop since April 14, 2000 (-83.95 points), fourth biggest point loss ever

DOW JONES INDUSTRIALS

* The Dow falls 504.48 points, or 4.42 percent, to close at 10,917.51

* Dow's sixth biggest point drop in its history

* Dow's biggest percentage drop since July 19, 2002.

* Dow's lowest close in over two years, since July 21, 2006

* Four of the five previous times the Dow has dropped 500 points or more in one day, it has risen triple digits the next day. The only day it has fallen the next day was the week following the September 11 attacks -- when it fell for five consecutive days.