sorry for a stupid question,but i'm curious-how the hell they were trading those futures or index etf's without data for underlying securities?
http://online.wsj.com/article/SB10001424127887324619504579028873794227410.html?site=mktw Thursday's problem is the latest in a string of technology-related mishaps affecting exchanges and brokers as markets over the past two decades have migrated to electronic systems. System problems marred Nasdaq OMX's rollout of the Facebook Inc. initial public offering last year, costing Wall Street firms approximately $500 million in trading losses. Earlier this week, Goldman Sachs Group Inc. flooded U.S. stock-options markets with erroneous orders, most of which were later canceled. Best line was: Société Générale. "If we want to trade Apple, we can't." BUllish.
It's in a tight range, some of the underlying instruments are not Nasdaq based so there's some index arbitrage still even with the Nasdaq securities down.
IWM is notorious for having the highest ATR of them, but applied to dia or spy, not a big deal; but ya some trading.