Origin of Wall Street’s Plunge Continues to Elude Officials

Officials from federal agencies hunted for clues amid a tangle of electronic trading records to find out what caused Thursday’s near panic on Wall Street.

You can't see what you wont look at.

It is known that equities are over valued. Traders sit with their hands on pre-programmed sell buttons. a down fluxuation is likely to start a wave of panic selling. This wave was halted.