News Retirement plans: 401(k) and IRA millionaires at Fidelity hits a record in the fourth quarter February 13, 2020 Jessica Menton, USA TODAY Comments Off on Retirement plans: 401(k) and IRA millionaires at Fidelity hits a record in the fourth quarter The number of investors with at least $1 million in their 401(k) accounts hit a record 233,000 in the fourth quarter, according to Fidelity.