approval of T-DM1, TDM sales run rate of $2BB by end of 2013, progress in the pipeline, that's all that is needed to reach $15, already been there and higher this year. The question is what will take IMGN into the $20's and when. Today, some buying by a swing trader with a following will take the price up. Buy early and hold!
buy early and hold means you should already be holding for the last 3 years.
buy late and hold means loading up in the current year (2013). 1qtr revenue will have small to no tdm1 income, but 2nd qtrly revenue should start seeing income and the associated price rise as analyst price projections become more concrete and people start looking more closely at potential revenue streams from pipeline products.
Fall to 10: unlikely, unless WWIII happens next year
$15-20: T-DM1 approval, plus more impressive clinical data from wholly owned and partnered products, plus new partnership deals, plus Icahn or the Bakers buying, etc. etc. I don't really care about a buyout just yet unless it's for $30.