Updated 2026-03-20

S&P 500 Index Funds in Your 401(k)

S&P 500 performance history, fund fee comparison, and whether to go 100% S&P 500 in your 401(k).

What You Will Learn

This guide covers everything you need to know about s&p 500 index funds in your 401(k). We break down the rules, compare your options, and provide tools to help you make informed decisions about your retirement savings.

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Pavlo Pyskunov

Pavlo Pyskunov

Managing Director & Investment Fund Director

Pavlo Pyskunov analyzes employer-sponsored retirement plans using IRS publications and DOL Form 5500 filings, helping workers maximize their 401(k) savings through data-driven guidance.

Last updated: 2026-03-20

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