The same thing happened back in 07, market was already under heavy selling pressure... not as much as today maybe down around 300 on the dow and all of a sudden it just plunged down another 5%. that was also the stops kicking in from the computers. When you see PG or other stocks go down 30% its just pure lunacy. Be thankful to have witnessed today's historic ride people, today is going into the history books ; )... if you lost money at least you have a fun story .... because what is the world without humor