With Jane Fraser as the new head of Citigroup, Wall Street finally has its first female CEO. Many believe she’s just what Citi needed – and after a fascinating career path, this next chapter will require Fraser to work her strategising magic for this at-times troubled lender

The recent success of Suni Harford, Alison Rose and Jane Fraser is promising news for an industry dominated by male leaders, but barriers to progression remain – and that starts with the culture