Willis Lease Finance Corporation (WLFC) shares have climbed 35.3% in the past six months compared with the industry’s 21.8% growth. The company has outperformed other industry players, including Air Lease Corporation (AL) and Ryder System, Inc. (R) . Shares of AL and R have gained 7.2% and 18%, respectively, in the same time frame. Sustained aviation supply-demand imbalances, firm lease rates, institutional capital partnerships, in-house technical capabilities and long-term service agreements drive recurrin ...