pxguitar, shot covering drives a stock up, not down. There are only 7500 shares of CAVR short (as of the 30th of April since short interest is only reported twice a month 15th and 30th). Yesterdays action was primarily selling by who and why is anyone's guess but, as I posted yesterday, there are a lot of penny shares out there and .04 is a 300 percent gain. I bought more this morning.