A few days ago I posted a lesson about looking for the stocks and sectors that display outstanding price and, especially, volume gains during the first few days of a new market rally. Oftentimes, the stocks that show the best performance initially will go on to big gains in the months to come. And, interestingly, many times the groups that show extraordinary volume thrusts are unexpected. Coal was a good example in January; who thought such dirty energy firms could thrive in a world that was going Green? But thrive they did. Today, we have an equally unexciting sector...