Key TakeawaysShares in package delivery giant FedEx surged nearly 14% in premarket trading Wednesday after the company topped Wall Street’s quarterly earnings estimates and provided an optimistic outlook.The company’s stock has traded within a narrow 6% range over the past six weeks on below-average volume, increasing the likelihood of a significant move post-earnings.Monitor if FedEx shares can close above the top trendline of a channel around $285, a move that that could lead to follow-through buying in u ...