By Shivansh Tiwary and Lisa Baertlein (Reuters) -Shares of FedEx slumped almost 16% on Friday, the worst in two years, after a dismal first-quarter profit drop due to anemic economic conditions and an ongoing customer shift toward slower,

FedEx said a weaker industrial economy produced a "challenging" quarter that caused it to trim its outlook for later this year, a sign of possible cooling in the wider economy.

Shares of FedEx slumped 15% on Friday, on track for their worst day in two years, after dismal first-quarter results, in what analysts attributed to a combination of broader economic concerns and an unfavorable shift in the company's sales from higher-priced deliveries.