We had 3 reasons to trade AAPL stock and options on Friday from the short side. The first is the stock usually pauses, when at least 10 points from the daily 9 exponential moving average. Also, on a very thin day in the stock, option, and futures markets, the big open interest around 290 acted as a “tractor beam” to pull it down from the 293 level. The third was the Nasadq index futures as a whole, were too far from the 9 EMA. For it to sell-off, you needed some help from the NASDAQ biggies, like AAPL, and AMZN.