Citi just launched a new unit that will apply data science to dealmaking. It's all part of a playbook to become a top-3 global investment bank.

· Citigroup is forming a new investment banking team, combining the firm's activism and shareholder defense, data science, and corporate finance advisory groups.
· The group aims to infuse data science into specialized teams to bolster dealmaking advice and make it more accessible across the division.
· The new global unit,...