American Airlines stock picked up another Buy rating Monday as Wall Street continued to warm to the shares after the carrier’s fourth-quarter earnings. Citi analysts upgraded the stock to Buy from Neutral, noting that the mainline airlines have moved into a position of strength in the postpandemic environment because of their diversified revenue streams and premium offerings. “Against this backdrop, American’s ongoing deleveraging focus and continued low capex, along with protracted industry capacity constraints, should continue to support the likes of American Airlines,” Citi’s Stephen Trent said in a note Monday. His target price of $20 implies a 32% gain from Friday’s closing price. He still prefers Delta Air Lines and United Airlines, but his call puts American ahead of Neutral-rated Southwest Airlines. Sentiment toward the stock on Wall Street is starting to shift, with 43% of those covering the shares rating them Buy. That is the highest since November