Yesterday had little to do with shorts. It was a classic pump and dump game played by those that knew that the news was "old". Regardless of how good the news is about imetelstat and ET, the only thing that is going to cause a significant bump in PPS is a partnership on imetelestat for ET an actual trial or partnership on full speed ahead on myelofibrosis, or sale of the company after the stem cell IP deal closes.
I'm holding and buying on dips.
Covering doesn't cause the share price to get walloped in the final minutes. Shorting and selling causes that. If there had been covering there would have been strength into the close. Sorry to be the bearer of bad news.
If shorts covered it would have gone up. The last second push apparently had the desired effect if that is how you feel. Did you not know games and Wall Street are synonymous?
IMHO News is real so stock will take off when analysts contribute some sanity here.