In the market like the past three days, it is more profittable to short some high beat stocks such as BIDU.

For each of these stocks, there was a turning point to go south. Shorting these stocks for a long time need some fundamental reasons. For example,

1). Most of PFE's patents will expire in the upcoming few years. It does not have anything exciting in its pipeline

2). Nitri System, it's very difficult for it to expand its customer base. Ironically, whenever a customer succeeds, NTRI will lose him/her.