AAPL's after-hours loss in market cap is greater than the market cap of one BlackRock, Starbucks, Target, Costco, or Nike. Down almost 9% from yesterday's close, AAPL is trading down to January 2012 levels (off 35% from its highs) and is now notably less capitalized than the entire European banking system. Of course, this has had serious consequences for the major indices that are trading after-hours (and futures). Futures traded down to the day-session lows before closing but QQQ are now trading at 6-day lows in after-hours...and as S&P futures reopen they are gapping down a little more.