Share: It’s once again that time of year when investors start bringing up the old Wall Street adage “sell in May and go away.” Historically, the S&P 500 has generated its weakest returns from May to November. In fact, going back to 1950, the six-month stretch from the beginning of May through the end of October has generated an average return of just 1.5%, making it the weakest six-month stretch of the year. Reasons For Caution: This year, the S&P 500 started off the month of May with a gain, but Hilary Kramer, chief investment officer for Kramer Capital Research, said Monday there ar...