The market’s May adage no longer applies in the age of air conditioning and algorithmic trading, according to one Bloomberg Intelligence analyst. - MarketWatch photo illustration/iStockphoto One of the most popular pieces of conventional investing wisdom couldn’t be more misguided, according to a recent analysis from Bloomberg Intelligence. For more than a century, the phrase “sell in May and go away, and come back on St. Leger’s Day,” has been treated as dogma by many financial pundits. The logic behind ...