I don't usually apply my trend-following system to individual stocks since they're so volatile, but I was curious to see where the exit would have been in SunEdison (SUNE). The answer is July 27, 2015 at $25.61. The downtrend that started then has yet to reverse.

I guess the big shareholders of SUNE don't put any stock (ha!) in trend-following systems, but they would have avoided a lot of pain if they did.

(I plan to look at Chipotle, Twitter, and Valeant next, so look out for those posts.)