Quick answer
Many plan sponsors review their 401(k) or 403(b) investment lineup on a regular schedule, often quarterly or at least once a year, following criteria written in their investment policy statement. No law sets an exact frequency. What matters is that reviews happen consistently, use the same criteria each time, and are documented, with fund changes made when a fund no longer meets the plan’s standards.
Why the lineup needs ongoing attention
Choosing the funds for a retirement plan is not a one-time decision. Under ERISA, fiduciaries have a continuing duty to monitor plan investments and remove ones that are no longer prudent. A fund that looked appropriate when it was added can change. Its managers leave, its strategy drifts, its fees fall behind lower-cost alternatives, or its results lag peers for an extended period.
A regular lineup review is how sponsors meet that duty in practice. It also gives the plan committee a chance to step back and ask whether the menu as a whole still serves participants well.
How often reviews usually happen
There is no single required schedule. Common approaches include:
- Quarterly monitoring of each fund against set criteria, often using a report prepared by the plan’s investment advisor
- An annual deeper review of the full menu, including fees, the default investment, and whether the range of options still makes sense
- Event-driven reviews when something significant happens, such as a portfolio manager departure, a merger of fund companies, or a major change in strategy
The right schedule depends on the size and complexity of the plan. The more important point is consistency. A schedule written into the investment policy statement and followed every time is stronger than a more frequent schedule that is often skipped. The post on investment policy statements explains how that document sets the rules for reviews.
What a review typically covers
Performance against appropriate benchmarks
Each fund’s results are compared with a relevant index and with peer funds in the same category, usually over several time periods. Short-term underperformance alone is rarely a reason to act. Persistent shortfalls over longer periods deserve closer attention.
Risk and consistency
Reviewers look at volatility and whether the fund behaves the way its category suggests it should. A fund labeled as conservative that takes on unusual risk may no longer fit its slot in the lineup.
Fees
Expense ratios and share classes are compared with alternatives. Sometimes the same fund is available in a lower-cost share class, which can be a simple improvement for participants.
Management and organization
Changes in the people running a fund, or in the company behind it, can affect how a fund is managed going forward.
Style drift
A fund that was added to fill a specific role, such as large company value stocks, should still be doing that job. Drift can leave gaps or overlaps in the menu.
The menu as a whole
Beyond individual funds, the committee can ask whether the lineup offers a reasonable range of choices without overwhelming participants, and whether the default investment still fits the workforce. Some plans use risk-based model portfolios to give participants simpler ready-made options.
A simple review framework
| Step | What happens |
|---|---|
| 1. Gather data | Advisor prepares a monitoring report covering performance, risk, fees, and changes |
| 2. Apply criteria | Each fund is measured against the standards in the investment policy statement |
| 3. Flag concerns | Funds that miss criteria go on a watch list with a set review period |
| 4. Decide | The committee keeps, watches, or replaces funds and records the reasons |
| 5. Communicate | If funds change, participants receive required notices and transition details |
Watch lists and replacing funds
Many investment policy statements use a watch list. A fund that misses criteria is flagged and monitored for a defined period instead of being removed right away. If it continues to fall short, the committee considers a replacement. This approach avoids reacting to short-term noise while still making sure problems are addressed.
Replacing a fund has its own steps. The committee should compare candidate funds using the same criteria, decide how existing balances will be moved, and give participants advance notice as required. Every decision, including a decision to keep a fund despite concerns, should be recorded with the reasons behind it.
Who does the work
Plan committees often rely on an investment advisor to prepare monitoring reports and recommend actions, while the committee keeps responsibility for decisions unless it has formally delegated that authority. In Melville, New York, APS Investment Management works with plan sponsors on investment policy statements and investment lineup management, and Steven J. Musmanno, the firm’s Chief Investment Officer, chairs its Fiduciary Investment Committee. More on how that process is structured is on the investment management page.
Whoever supports the review, the sponsor should understand the criteria being used and should be able to explain the decisions made. The Department of Labor’s guidance on fiduciary responsibilities outlines the duty to monitor plan investments.
Common mistakes
- Reviewing funds only when a participant complains
- Changing funds based on one quarter of results
- Keeping a fund for years on a watch list without a decision
- Ignoring lower-cost share classes of the same fund
- Making reasonable decisions but never writing them down
Key takeaways
- Fiduciaries have an ongoing duty to monitor plan investments, not just choose them once.
- Many plans review funds quarterly with a deeper annual look, but consistency matters more than frequency.
- Reviews usually cover performance, risk, fees, management changes, style drift, and the menu as a whole.
- Watch lists help avoid reacting to short-term results while still addressing real problems.
- Documenting each decision and its reasons is a core part of a prudent process.
Frequently asked questions
Is there a legal requirement to review the lineup quarterly?
No. ERISA requires ongoing monitoring but does not set a specific schedule. Plans typically set their own frequency in the investment policy statement and follow it.
Should a fund be replaced after one bad year?
Not usually on that basis alone. Most review processes look at results over several periods and other factors such as fees, risk, and management changes before deciding.
Do participants have to be told when funds change?
Yes. Plans generally must give participants advance notice of changes to investment options, along with information about how balances will be moved.
Who is responsible if the lineup is not monitored?
The plan fiduciaries, usually the sponsor and any committee members, are responsible for monitoring unless that duty has been formally delegated to another fiduciary.
