Tucked inside its quarterly report on the status of retirement savings accounts, Fidelity Investments mentioned its success to date with its automatic rollover service that employees can tap to transfer tiny retirement savings from one employer to the next. More than 9,200 Fidelity 401(k) plans have adopted auto portability, an automatic rollover service launched three years ago for employees transferring small retirement savings from one employer to another. That's up from roughly 6,000 plans a year ago. ...