US’s best investment bank 2025: Citi

Citi’s strong performance across M&A, equity and debt capital markets (DCM) in 2024 has earned it the title of the US’s best investment bank.  

Demonstrating exceptional breadth and depth, Citi advised on the year’s most transformative transactions, including Mars’ $35.9 billion acquisition of Kellanova – the largest global M&A deal of 2024 – and Diamondback’s $26 billion merger with Endeavor, where Citi served as both M&A and capital markets adviser. 

In equity capital markets, Citi led landmark offerings such as Boeing’s $24 billion simultaneous follow-on and mandatory convertible – the largest of its kind in US history – and five high-profile tech IPOs, including Reddit and Rubrik. Citi also played a pivotal role in revitalising the healthcare issuance market, bookrunning more than 30% of total healthcare capital raised in September 2024. 

Citi ranked top five across all major product categories

Citi’s DCM franchise was equally dominant. It served as bookrunner on the seven largest investment-grade bond issuances of the year, including offerings for AbbVie, Cisco and Bristol-Myers Squibb. The firm also launched a $25 billion private credit partnership with Apollo, expanding its innovative financing capabilities. 

Finally, Citi ranked top five across all major product categories. Its ability to deliver strategic advice, structure complex financings and execute flawlessly across volatile markets underscores its leadership and client trust.