Abigail Johnson

Assets under administration climbed 20%, to $6.8 trillion, in 2017 at the country’s largest provider of workplace retirement savings plans, with profits up more than 50%. The exodus from Fidelity’s actively managed stock funds is finally slowing, with investors pulling out $47 billion in 2017, vs. $58 billion in 2016. Even in the wake of a sexual misconduct scandal (a pair of portfolio managers were dismissed), Johnson stayed focused on beating competitors, slashing fees, and debuting new products.