If you simply Google “sell rosh” like I did, you will likely see it fill in the rest of an investment market saying that dates back to 1955. “Sell Rosh Hashanah, Buy Yom Kippur.” For those not familiar with the story and a couple of nouns I just used, here’s a quick primer. Back on Sept. 23, 1955, then-U.S. President Dwight Eisenhower, a hero of World War II, suffered a massive heart attack. The market sold off, concerned for the health of the 65-year-old leader. He recovered, and even won election to a s ...