Fidelity Investments, the largest provider of 401(k) retirement plans, said that average balances in employer-sponsored accounts reached the highest level since it began tracking values in 2000, as market gains boosted assets, Bloomberg News reported today. The average account balance in the U.S. rose to $75,900 as of the third quarter, an increase of 18 percent from a year earlier, according to a report released today by the Boston-based Fidelity, which administers plans for about 12 million workers.
