When the market goes down, investors on margin som

When the market goes down, investors on margin sometimes have to meet margin calls, and therfeore sell their cash positions to cover.. this usually affects penny stocks the most because its all cash.  Only a guess that this could be affecting our little gem. Frankly, I sold most of my stock positions a few weeks ago ... the only things i'm now  holding are FITX and VXX (shorts the S&P).  I can now sleep nights.