It’s been a rough couple of weeks on the stock market, ending recently with a warning from FedEX about a downturn in the global economy that sent shares tumbling. FedEx CEO Raj Subramaniam said on CNBC that he believed a recession was impending for the global economy. He cited the company’s weakening global shipment volumes as a reason for his prediction. “We are a reflection of everybody else’s business, especially the high-value economy in the world,” he said. Transportation stocks are typically seen as a leading indicator for the economy. However, as an article in Barron’s asked, “Is It the…