I've got to think that shorts are betting that Mirasol data isn't that good, we should know for certain by May, before those $5 calls close, so those investing in them are betting on good results. I certainly think the trial running long is an indication that something good was happening, so hopefully the shorts will be burned. Meanwhile we may be in for some pain until we see some news.
One question that may be worthy of consideration is, are their any BP's who've indicated an interest in handling MIRV in some way who've established confidentiality agreements with IMGN. If there are, would they have access to the raw Mirasol data so they can draw their own conclusions about the results of the trial. I certainly don't know this to be the case, but if it were, some sort of collaborative agreement could be out at essentially the same time as TLD is announced.
Gary