Intersection of top of 2 separate channels plus jan '18 top ahead. Everything lines up w/ a bearish butterfly that's been developing this week. I'd watch for some profit taking here going into the weekend. If I'm shorting any of the indices, I'd jump on DIA. While SPY is still diverging on the daily RSI, it has remained very strong even in a post quad witch opex week, reminiscent of 2017, where the index melted up relentlessly in complete disregard for RSI divergence.