Key TakeawaysFedEx lowered its revenue and earnings outlook for fiscal 2025.The company's fiscal first-quarter results missed analysts' expectations on the top and bottom lines amid weaker demand for its priority shipping services.FedEx's contract with USPS is also slated to end later this month. FedEx (FDX) shares tumbled in extended trading Thursday after the company missed analysts' estimates with its fiscal first-quarter results and slashed its full-year outlook. The shipping company posted first-quarte ...