The mms control the market computers main frames in wall street, and they did a huge error. They try to stop it but the damage was there. Google Shares of Google lost 8 percent - the stock's worst day since January 20 - to close at $695 after the Internet giant's third-quarter results showed earnings and revenue fell short of forecasts. The earnings report had not been expected until after the market's close. Trading of the stock was halted at 12:50 p.m. after Google had fallen as much as 10.5 percent to a session low of $676. Trading resumed at 3:20 p.m.
Google was the biggest drag on the S&P 500. Tech stocks suffered, with the S&P 500 information technology index (.GSPT) losing 1.53 percent. Shares of IBM (IBM.N), which disappointed investors a day earlier, lost 2.8 percent to close at $194.96 and pull the Dow lower.
This shows that the stocks can drop before you react and the damage is done. Take profits as soon as possible and don't be greedy.