Quote from Triple X:
Good posts about this volatility. We are indeed playing against hedgie algos right now. Here's a link that gives even more detail, how some of the largest funds run black boxes that don't even use human input. We are trading against computers, and I for one got my ass handed to me this week lol.
http://www.battleofthequants.com/index.html
if you saw the price pattern of what was happening during that overnight session where ES dropped and ran up...in minutes, you can tell what the algo programming was..
basically a volatility fan was constructed, the algo bought at the trendlines below and sold above at the the trendlines...creating a vol fan...

)), then lift the floor, ouch. Anyhow, 'trade what you see' & stay on top of the game.