Rob Gronkowski is best known for his time in the National Football League, but his recent call of timing the bottom in the stock market might be a welcome sign during the often losing month of September. What Happened: Gronkowski offered a sense of urgency to get stock market prices back up last week after the S&P 500, which is tracked by the SPDR S&P 500 ETF Trust (NYSE:SPY), started the week down. The former NFL star, who won four Super Bowls during his 11-year NFL career with the New England Patriots and Tampa Bay Buccaneers, was featured in a live television interview sharing his financial…
