Choosing investment options is one of the most important responsibilities of a 401(k) plan sponsor. But selecting investments is only part of the job. Under ERISA, employers also have an ongoing fiduciary duty to monitor those investments and ensure the plan continues to serve participants' best interests.

For many small business owners and HR teams, evaluating investment options can feel intimidating. Fund fact sheets contain unfamiliar metrics, performance data can be misleading without context, and new investment products seem to appear every year.

At Basic Capital, we believe retirement investing should be transparent and understandable. The goal is not to build the perfect investment lineup. It is to create a diversified, cost-effective menu that helps employees save for retirement while supporting prudent fiduciary oversight.

This guide explains how plan sponsors can evaluate their investment lineup, benchmark costs, identify potential red flags, and make informed decisions about when changes may be appropriate.

Fiduciary Responsibility Doesn't End After Selecting Funds

One of the most common misconceptions among plan sponsors is that investment oversight happens only when the plan is launched.

In reality, ERISA requires fiduciaries to monitor investments on an ongoing basis.

That means employers should periodically review:

• Fund performance

• Investment fees

• Fund manager changes

• Participant usage

• Overall lineup diversification

The focus should be on maintaining a prudent process rather than trying to predict which funds will outperform in the future.

At Basic Capital, we often remind employers that fiduciary responsibility is largely about documentation, consistency, and thoughtful oversight.

What a Well-Diversified 401(k) Investment Menu Looks Like

While every plan is different, most well-designed retirement plans provide participants with a diversified set of investment choices.

A typical lineup often includes:

A Target-Date Fund Series

Target-date funds are one of the most common default investment options in retirement plans.

These funds automatically adjust risk exposure over time as participants approach retirement age.

For many employees, target-date funds offer a simple, professionally managed retirement solution without requiring ongoing investment decisions.

Broad Market Index Funds

Index funds provide diversified exposure to large segments of the market while typically maintaining relatively low costs.

Common examples include:

• U.S. stock index funds

• International stock index funds

• Bond index funds

Index funds often serve as the foundation of many retirement plan investment menus.

Fixed Income Options

Bond funds and fixed-income investments can help participants manage risk and diversify their portfolios.

These investments often become increasingly important as participants approach retirement.

Stable Value Funds

Many retirement plans also offer stable value funds, which aim to preserve principal while providing modest returns.

These options can appeal to participants seeking lower volatility than traditional stock investments.

The goal is not necessarily to provide dozens of choices. Instead, it is to provide enough diversification to support a range of participant needs without creating unnecessary complexity.

How to Read a Fund Fact Sheet

Fund fact sheets provide much of the information plan sponsors need to evaluate investments.

While the layout varies by provider, most fact sheets include several key sections.

Investment Objective

This explains what the fund is trying to achieve.

Examples might include:

• Long-term growth

• Income generation

• Capital preservation

• Balanced growth and income

Plan sponsors should understand whether the fund's objective aligns with its role within the investment lineup.

Performance History

Most fact sheets display:

• One-year returns

• Three-year returns

• Five-year returns

• Ten-year returns (when available)

Rather than focusing on short-term results, employers should generally evaluate performance across longer periods and compare results against appropriate benchmarks.

Expense Ratio

The expense ratio represents the annual cost of managing the fund.

For example:

• A 0.20% expense ratio means participants pay approximately $20 annually for every $10,000 invested.

Expense ratios are one of the most important metrics plan sponsors should monitor.

Portfolio Holdings

Reviewing top holdings can provide insight into:

• Diversification

• Risk exposure

• Sector concentration

• Investment strategy

Understanding what participants are actually invested in helps support informed oversight.

How to Benchmark Expense Ratios

Fees matter because they directly affect participant outcomes over time.

That does not mean employers should always choose the lowest-cost investment available, but costs should be reasonable relative to the value being provided.

Questions plan sponsors should ask include:

• Are similar funds available at lower costs?

• Are participants paying for active management they may not need?

• Have investment fees been benchmarked recently?

• Are institutional share classes available?

Many employers are surprised to discover that similar funds may be available at significantly different fee levels.

At Basic Capital, we believe fee transparency is an important part of responsible retirement plan governance.

Investment Menu Red Flags to Watch For

Most investment lineups evolve over time, but certain warning signs may indicate the need for additional review.

Excessive Proprietary Funds

Some providers heavily populate investment menus with their own proprietary funds.

While proprietary funds are not inherently problematic, employers should ensure selections are based on participant needs rather than provider preferences.

Higher-Cost Share Classes

Two versions of the same fund may have very different expense ratios.

Employers should periodically review whether lower-cost institutional share classes are available.

Too Many Investment Choices

More options do not always create better outcomes.

Large investment menus can overwhelm participants and make investment decisions more difficult.

Persistent Underperformance

Short-term performance fluctuations are normal.

However, funds that consistently lag relevant benchmarks over longer periods may warrant further review.

When Should a Fund Be Replaced?

Replacing an investment option is a significant decision, but it is sometimes necessary.

Common reasons for evaluating a replacement include:

• Persistent underperformance

• Significant fee concerns

• Manager turnover

• Strategy changes

• Better alternatives becoming available

• Failure to meet investment policy criteria

The decision should be based on a documented review process rather than reacting to short-term market conditions.

Many employers use an Investment Policy Statement (IPS) to establish guidelines for monitoring and replacing investments.

A Practical Fund Review Process

A simple annual review process may include:

Step 1: Review Performance

Compare fund performance against:

• Relevant benchmarks

• Peer groups

• IPS standards

Step 2: Review Fees

Evaluate:

• Expense ratios

• Share classes

• Industry benchmarks

Step 3: Review Fund Changes

Assess:

• Management changes

• Strategy changes

• Organizational changes

Step 4: Document Findings

Maintain records of:

• Investment reviews

• Discussion notes

• Decisions made

• Follow-up actions

Good documentation is often just as important as the review itself.

What About Alternative Investments?

Alternative investments continue attracting attention across the retirement industry.

Examples may include:

• Private markets

• Real estate strategies

• Alternative income products

• Other non-traditional asset classes

Before adding alternative investments, plan sponsors should ask:

• Is the investment easy for participants to understand?

• How does it fit within the overall lineup?

• What are the fees?

• What are the liquidity considerations?

• How will participants evaluate performance?

• Does it improve diversification meaningfully?

Alternative investments may be appropriate in some circumstances, but they often require additional fiduciary review and participant education.

Why Modern Retirement Platforms Matter

Investment oversight becomes easier when employers have better visibility into plan data, fees, and participant outcomes.

Modern retirement platforms can help simplify:

• Investment monitoring

• Fee transparency

• Fiduciary documentation

• Participant engagement

• Compliance oversight

At Basic Capital, we believe retirement infrastructure should help employers spend less time navigating administrative complexity and more time supporting long-term retirement success.

Companies evaluating retirement plan modernization can also explore our For Employers resources to learn how modern retirement technology supports fiduciary oversight, compliance, and employee engagement.

Looking Ahead

Evaluating investment options is not about finding the hottest-performing fund or constantly making changes to the lineup.

It is about maintaining a diversified investment menu, monitoring costs, documenting decisions, and ensuring participants have access to appropriate retirement savings options.

At Basic Capital, we believe retirement plans should balance:

• Diversification

• Transparency

• Fiduciary responsibility

• Participant simplicity

• Long-term retirement readiness

Ready to see how a modern retirement platform approaches investment oversight and retirement plan management? Get started with Basic Capital to learn how our platform helps employers simplify administration, improve transparency, and support better retirement outcomes.