Perspectives : DC Retirement | August 26, 2026

The art of balance: Simplifying 401(k) choices, acknowledging individual needs

Not long ago, many 401(k) plans offered rather extensive investment menus—sometimes with more fund options than participants knew what to do with.

But that approach is changing. These days, sponsors are more likely to limit their fund lineups to about 17 investment options.* And there are a couple of reasons for this.

Chief among them is simplicity—but not at the expense of diversification. Sponsors still see the benefit of offering options across cash, bond, balanced, and stock asset classes.

For an in-depth look at the recent evolution of investment lineups and how participants use them to build their portfolios, check out our new research, Trends in Defined Contribution Lineups and Participant Behavior.

Read the research

Keeping it simple

Streamlining an investment lineup should not be viewed as depriving participants of choice. Rather, it reflects a time-honored behavioral finance insight: Too many funds can increase complexity, make decisions more difficult, and leave participants feeling overwhelmed.

Sponsors have done a great job striking a balance between offering enough choice to meet participants’ needs and keeping complexity to a manageable minimum.

For many participants, particularly younger ones, target-date funds have reduced the need to build portfolios on their own from a selection of individual options. And that works for them.

Source: Vanguard, 2026.

But older participants and those with higher account balances continue to tailor allocations using cash, bond, and stock funds to meet more varied needs.

Rather than positioning their lineups as all things to all people, sponsors provide individual building blocks for those who want them while keeping a simpler path open for those who prefer that route.

A foundation of diversification

So, about those building blocks. Most plans today still offer funds across four major asset classes. And within those classes, the options continue to evolve:
Cash funds. Stable value and money market funds may be attractive to participants nearing retirement because they offer low volatility and capital preservation. In recent years, they’ve become slightly more common in plan lineups. From year-end 2022 through year-end 2025, the share of plans offering a money market fund rose from 63% to 65%. (Source: Vanguard, 2026.)
Bond funds. Passive index bond funds remain popular—9 in 10 plans offer them—but active bond funds have also gained ground, rising from about half of plans in 2005 to about 75% today. This growth suggests that sponsors value both low-cost core options and strategies with greater flexibility across interest-rate and credit environments. (Source: Vanguard, 2026.)
Balanced funds. Because of their diversification properties, balanced funds have long been a mainstay in plan investment lineups. They have also emerged as the go-to qualified default investment alternative (QDIA) as automatic enrollment has become more prevalent. Today, 94% of plans use a target-date fund or traditional balanced fund as the QDIA; however, the share offering traditional balanced funds declined from 64% in 2022 to 61% in 2025. (Source: Vanguard, 2026.)
Stock funds. A workhorse of defined contribution plans, stock funds offer the potential for long-term growth. Sponsors have traditionally offered a diversified mix of active and index options, as well as international funds—often including U.S. growth and value funds in both active and passive strategies. International stock funds are evolving as well. Over the last three years, the share of plans offering international funds with a blended strategy rose from 10% to 15%, while the share offering single-style funds declined slightly. (Source: Vanguard, 2026.)

Where sponsors come in

For plan sponsors, simplifying an investment lineup isn’t just about offering fewer choices. It’s about creating a menu in which each fund has a clear objective, supports participant decision-making, and contributes to a well-structured, well-governed retirement plan.

To that end, here are a few steps sponsors can take:

  • Review the plan’s QDIA. As target-date fund use grows, sponsors should be ready to show why the option fits their participants and how it continues to meet their needs.

  • Focus on the full lineup. Target-date funds may do more of the heavy lifting, but every option still needs active oversight and a clear role in the menu.

  • Balance flexibility and simplicity. Options across cash, bond, balanced, and stock asset classes can support different needs, but each should have a clear purpose and be easy to understand.

  • Make sure it’s working. Ensure that participants across a range of ages, account balances, and investment preferences can find options that fit their needs.

More isn’t always better. But better is. The strongest lineups are often the ones that make it easier for participants to choose well—while still giving sponsors the flexibility and fiduciary structure needed to support a diverse workforce.

For a deeper look at investment lineup trends, including how participants use available options, be sure to check out our new research, Trends in Defined Contribution Lineups and Participant Behavior.

Related links

Notes

* How America Saves 2026. Vanguard.

All investing is subject to risk, including the possible loss of the money you invest.

Diversification does not ensure a profit or protect against a loss. Bond funds are subject to the risk that an issuer will fail to make payments on time, and that bond prices will decline because of rising interest rates or negative perceptions of an issuer's ability to make payments.

Be aware that fluctuations in the financial markets and other factors may cause declines in the value of your account. There is no guarantee that any particular asset allocation or mix of funds will meet your investment objectives or provide you with a given level of income.

Investments in stocks or bonds issued by non-U.S. companies are subject to risks including country/regional risk, which is the chance that political upheaval, financial troubles, or natural disasters will adversely affect the value of securities issued by companies in foreign countries or regions; and currency risk, which is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

Investments in target-date funds are subject to the risks of their underlying funds. The year in the fund name refers to the approximate year (the target date) when an investor in the fund would retire and leave the workforce. The fund will gradually shift its emphasis from more aggressive investments to more conservative ones based on its target date. An investment in target-date funds is not guaranteed at any time, including on or after the target date.