Buying drys up in the high $15's, need some new purchase volume, or new catalyst to break $16. The good news for long term holders, not so good for traders, is that selling also appears to have dried up. The market and sector are storng, there's no good reason IMGN should be stalling here, except for the bad memories of buys at this level. IMGN needs to say "no new financing in 2013" because that's what caused the bad memories for those who have paid $16+ in the past.
mgsmom, right on target. I am in the second group, a long-term investor in IMGN. I don't care about the day to day price, unless it drops significantly on zero news to allow me to buy more shares on the cheap.