Hey, rb,
One big difference with DNDN and MNKD, DNDN had no run up to the time it got good news and jumped, in fact, I think it had been drifting down for several months prior; in contrast, MNKD has enjoyed one heck of a run up since Feb or so, and I gotta think that the lion's share of that run-up had to do with anticipation of just what we got today.
Also, although the moon and the sky are the potential here, $5 billion is sales even two years from now is very difficult to see. But certainly, a $5 billion market cap is within striking distance with a partnership and/or an FDA approval, with both, perhaps a little more.
If you don't mind sharing, what are your option strikes for January (2014, right, or are you talking 2015?) Mine are anywhere from $9 to $15, and they include August, September, November, January and February. Perhaps you bought some from me!!