U.S. Retirement Assets Soar to $49.1 Trillion by 2025

Total U.S. retirement assets reached a staggering $49.1 trillion by December 2025, marking a 2.1% increase from the prior September figures and an impressive 11.2% annual rise, according to the Investment Company Institute (ICI). These figures indicate that retirement portfolios are significantly impacted by market performance and individual contributions, as these assets accounted for a third of all U.S. household financial holdings.

In the fourth quarter of 2025, individual retirement accounts (IRAs) continued to dominate the market, totaling $19.2 trillion, with a 1.7% quarterly growth. Defined contribution (DC) plan assets mirrored this growth, also rising by 1.7% to reach $14.2 trillion, reflecting ongoing shifts in retirement planning preferences.

Government defined benefit plans, spanning federal, state, and local levels, exhibited a solid 4.5% growth from the previous quarter, accumulating $10 trillion. Meanwhile, private sector defined benefit plans held $3.1 trillion. Annuities outside traditional retirement accounts reached $2.6 trillion, according to additional insights from LIMRA.

LIMRA's data indicated a record-breaking year for annuity sales, which totaled $117.2 billion in the fourth quarter alone, contributing to a yearly total of $464.1 billion. This marked the ninth consecutive quarter with sales topping $100 billion. Key factors driving these sales include favorable economic conditions, expanded distribution channels, and growing demand for guaranteed lifetime income, especially as 4.1 million Americans turn 65 each year, highlighted by Bryan Hodgens of LIMRA.

Employer-based DC plans held substantial assets, with $14.2 trillion reported by year-end 2025. Notably, 401(k) plans comprised $10.1 trillion of this segment. The DC market also included $880 billion from other private-sector DC plans, $1.5 trillion in 403(b) plans, $550 billion in 457 plans, and $1.1 trillion from the Federal Employees Retirement System’s Thrift Savings Plan.

Within 401(k) portfolios, mutual funds played a significant role, managing $5.8 trillion, or 57%, of the assets at the year’s end. Equity funds led the charge with $3.4 trillion, followed by $1.6 trillion in hybrid funds such as target-date funds. This dominance underscores the importance of mutual funds in retirement planning.

A collaborative study by the Investment Company Institute and ISS Market Intelligence underscored the impact of employer strategies on 401(k) outcomes. Approximately 90% of large plans, usually those with 100 or more participants, included employer contributions, with an average of 29 investment options available. Shelly Antoniewicz, ICI's chief economist, pointed out that these contributions and diverse investment choices are pivotal in empowering American workers to achieve retirement security. By December 2025, IRAs contained $19.2 trillion, with mutual funds representing 39% of this total. Equity funds comprised $4.3 trillion of IRA mutual fund investments, while hybrid funds accounted for another $1.2 trillion.