Two distinct groups of investors have emerged since the U.S. stock market rally began in early March. Initially overly cautious and smug in their desire to protect themselves, the first group of investors were convinced the rally was going to sputter and stall. It hasn’t, and 57% later these investors now believe they’re getting left behind, so they’re piling into the key indices in effort to make up lost ground.
The second group consists of investors who believe they can outsmart the market. T....

