Ridgerunner…

A Fat Finger jammed the market down?

That’s some boo-boo.

Much more likely, to my mind, was HFT.

High Frequency Trading is trading on an algorithm at speeds beyond human reflex, let alone contemplation.

Once the HFT program was triggered — probably by another HFT attacking it — then it was a whipsaw killing.

We’ll probably be reading about some crippled hedge fund in the following days.

An alternate speculation would be that GS is gaming Congress and the Fed.