Insiders have been selling like there's no tomorrow.
I feel bad for all NXTM longs. If you have access to SEC filing, you will see insders have been selling since June 2010 @ mid $16 to mid $17 like there's no tomorrow. If you have TDameritrade, you can click on SEC Filings tab for NXTM. For example, CHAMBON PHILIPPE, Director sold 500000 @$16 on 8/11/10; 80,000+ shares $16+ on 8/6/10; etc.