Barclays analysts are bullish on the future of American Airlines Group Inc. (AAL) - Get Report after upgrading the stock to "overweight" with a $63 price target.

Here are three reasons Barclays sees a bright future for American Airlines. The airline has:

• A focused and properly incentivized management team
• A large relative margin opportunity
• A clear strategy to achieve improvement 

"More importantly, American appears to be internally driving improvement in areas the company can control and less focused on the actions of others, which in our view is a critical step to creating an engaged and winning culture," Barclays note says. 

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