Easy come, easy go.

Friday’s Close on the Nasdaq Composite: 1,649.51
Monday’s close, after the big rally: 1,844.25
Tuesday’s close, as rally reverses: 1,779.01
Wednesday’s close:1,628.33

And from Bespoke Investment Group:

Another Day, Another Crash

...It's unbelievable, but 2008 is now on par with the worst years of the Great Depression for equities.