Stock market investors live by the Apple and die by the Apple... and with Apple's 2.5% drop today, broad stock market indices have cratered in the last few minutes retracing the gains accrued since Yellen started speaking yesterday... We note that as crude oil went vertical into the 1430ET NYMEX close equities decoupled and AAPL started to fall more rapidly... Which dragged the S&P and Nasdaq notably lower... Of course - this is merely a dip to be bought.... so algos get back to work!