On 13th October, 2014. At 1532ET today (Columbus Day - with half the market absent), someone - apparently having waited to see if the almost 'ubiquitous' 330pm Ramp would occur - decided it was time to dump three-quarters of a billion dollars notional of US equity market exposure in 1 second. The results of this forced liquidation (or utter disregard for fiduciary duty) were as follows...
(http://www.ino.com/blog/2014/10/when-someone-is-desperate-to-sell-750-million-of-stocks/#.VD43imeSySo)
