Shares of AerCap (AER) have been strong performers lately, with the stock up 0.9% over the past month. The stock hit a new 52-week high of $94.63 in the previous session. AerCap has gained 25.6% since the start of the year compared to the 7.6% move for the Zacks Finance sector and the 16.8% return for the Zacks Financial - Leasing Companies industry.What's Driving the Outperformance?The stock has a great record of positive earnings surprises, as it hasn't missed our earnings consensus estimate in any of th ...