The Moment to Sell?

CNN's John Defterios says the time to sell is when you see wild eyes and veins popping out of your foreheads. But in theory, those wild eyes can keep going for quite a while more, he writes. The real wayt to nail this market, if it can ever be done, is spotting the guy or woman who asks: "Do you think thi's gone a bit too far?" He argues that by knowing how markets work, one can understand what's going on much better.