At Citigroup's first investor day in four years, CEO Jane Fraser declared the bank has "rebuilt the engine" and is ready to leave its messy past behind. The long-time Wall Street laggard now claims its structure and internal controls have been strengthened, setting the stage for improved performance after years of regulatory penalties and reputation damage that plagued the institution.

Since taking over five years ago, Fraser has aggressively streamlined operations, sold international units, and invested in wealth management and banking divisions. The bank has also poached executives from competitors, signaling a strategic shift toward more focused operations with stronger internal controls designed to prevent the regulatory issues that had put the institution in the penalty box.

However, Citi's forecasts for a key profitability metric fell short of Wall Street expectations, indicating challenges remain on the path to full recovery. The bank's turnaround narrative will need concrete results to convince investors it has truly escaped its former status as an underperformer on Wall Street, with performance metrics still lagging behind competitors.