Stephen,
MHI is of course in an uptrend, but rather more importantly, there is no sign at all of any technical weakness yet. The On Balance Volume indicator usually gives good warning of a stock topping out, and it is still rising. (There is no sign of distribution). Slow Stochastic oscillators also can identify changes in market sentiment well before they become reflected in the price.
MHI has not even come close to giving a Sell signal since the Buy signals of October and December of last year. Sell? MHI??? You would have to be a fundamentalist to even contemplate such an action!!!!

If you were able to accurately calculate the "true worth" of MHI, I would still see this fact as being of little practical use. The reason being that stocks in uptrends almost invariably overshoot this figure by an appreciable margin. To sell any rising stock when it reaches its "true worth" is to sell too soon.

Similarly with falling stocks. To buy a falling stock when it reaches its "true value" is to buy too soon - they usually overshoot and fall well below this figure. Why pay more than you have to?