American Airlines Group Inc. (AAL) has announced an expansion of its partnership with Citigroup Inc. (C) to exclusively issue the AAdvantage co-branded card portfolio in the United States beginning in 2026. As part of this ten-year agreement, Citi will acquire the Barclays American Airlines Co-branded Card portfolio and transition card members into its portfolio starting in 2026. This long-term partnership aims to provide substantial loyalty benefits and rewards. At present, shares of American Airlines are experiencing a 10.60% increase, trading at $16.45 on the Nasdaq.