And Thestreet.com's index of 20 Internet companies slumped 26.67, or 5.2 percent, to 504.85.
The Standard & Poor's 500 index slumped 1.4 percent, to 371.62, off 5.14 points.
Morgan Stanley's cyclical index slumped 2.5 percent, its biggest loss of the year.
The Standard & Poor's 500-stock index slumped 15.38 points, or 1 percent, to 1,480.19.
Now, with the index having slumped to around 2100, its value has fallen more than half from that record high.
The Standard & Poor's 500-stock index slumped 2.9 percent in the quarter and closed out the first half down 1 percent.
The index slumped 46.67 points, or 1.86 percent, to 2,463.42.
The Standard & Poor's 500-stock index also slumped, losing 3.39 points, to 920.16.
One day after surging past 8,000, the index slumped along with other market indicators, falling 18.11 points, to 8,020.77.
The main index has slumped by 7%, with shareholders in Greek banks desperately trying to offload them.