American Association of Individual Investors

American Association of Individual Investors

The Many Layers of Your 401(k) Plan

Understanding the complexities of how your 401(k) savings are managed can help you make more informed retirement planning decisions.

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AAII
Oct 19, 2026
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  • How 401(k) contributions move from your paycheck through recordkeepers, custodians, investment managers and financial markets

  • The roles of trustees, custodians and investment managers, plus how fees affect retirement savings

  • The regulatory safeguards protecting 401(k) assets, including government and regulatory agency oversight

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