Unlike yourself, I did not expect any sort of selloff from the get go once news of fda approval was made public. Maybe a pop in price, then some descend in the coming days/weeks. Although, with this company, it does Seem every time there is good news, its rapidly followed by a selloff. Never an upwards pop of 20% in a day! If this teaches us anything, at least we will now know what to expect upon ariads next drug approval.
However, with all the future possibilities you pointed out, I think the numbers you gave for share prices is still quite low. This is still an unofficial start for the company! We should continue to move upwards shortly. After all, provenge alone made that companies price gradually ascend into the 50s.