I kind of thiink it should far above $4. Doing the math (the record backlog going into revenues in under 18 months), VSR will have record revenue this and correspondingly higher profitability (though the margin on Dover is on lower side). I think VSR should go to at least $6, and if their acquisitions prove sustained competitive advantage by demonstration with further contract wins (such as in Kuwait), then VSR can go even higher than $6 because of sustained higher eps. In long term (next 2 years) if revenues can be sustained at $170 million plus with 12% gross margin, then $0.60 eps is reasonable. At a bit over 13 x PE ratio, then that's a $8.00 stock price, which was where it was in 2007.
Don't think there is a "shake out." There is no "them" to get you. It's normal stock market behavior for rallies to be followed by corrections. Anyhow, there is substantial growth coming. Stock is likely to go over $10.
There are some big funds that are selling and some big funds that are buying. The ones selling are probably tired of holing on to underwater stock for so long. Since the price has been going up recently, the buying pressure is exceeding the selling pressure.