大山， see below 。。。

I do a lot of hedge. Bought a lot of put when NASDAQ dips below BB mid-band (均线大哥谈了很多次）， covered them when I went long on 8/5. This particular time, I was lucky on most of the trend reveral trade. Last year in Q3, I wasn't so lucky so portfolio dropped more (from percentage wise) than NASDAQ during that time.