There is a very large seller in ZGNX. It could be a short seller or someone with a big position. But if it is a legitimate seller he acts very strange in that he always sells heavily at the end of the day to make sure the stock closes around its low for the day. Unless its someone who is angry at the company and wants to make it look bad or a short seller its very peculiar. If you want to buy the stock wait until the end of the day because the seller will be sure to blast it then. Its something NASDAQ should take a look at. I plan to bring it to their attention.
A legitimate seller wants to get the best price possible on his sale. By making sure the stock always closes weak and therefore looks weak he makes it less likely that he can get good prices the next day.
I have been noticing that since last Fall. I was thinking that someone is dumping large blocks to trigger computerized auto sales then turning around and purchasing increasingly larger positions. I have just used it as a buying opportunity and have been periodically adding to my position since last May.
I am staying long. Zohydro is only part of this equation. Dose pro technology could be the main driving force several years down the road. It is much safer than needles for various reasons and the number of medications using it will mushroom in the coming years.