Ask an Advisor: The S&P 500 Averages About 10.5% Per Year. Why Wouldn't I Invest My Entire 401(k) in it?

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Affected assets and topics

S&P

Why it matters

The article discusses the historical performance of the S&P 500, averaging 10.5% annual returns, and questions why investors wouldn't invest their entire 401(k) in it. However, the article does not provide a clear answer, implying that there may be other factors to consider.

Article tone

Neutral How the article is written, as reported by the source.

Expected market reaction

Neutral Confidence 76% How confidence is read Impact: Moderate

Market impact analysis based on neutral sentiment with 76% confidence.

Evidence trail

Evidence
Source Yahoo Finance
Claim Ask an Advisor: The S&P 500 Averages About 10.5% Per Year. Why Wouldn't I Invest My Entire 401(k) in it?
AI inference Neutral · 76%
Generated 2025-12-08 12:00

AI provenance

Analysed by Llama 3.1 8B Instant (Groq) Methodology v1.0 Generated
Technical identifiers
Provider tag
groq-llama-3.1-8b-instant
Analysis version
groq-llama-3.1-8b-instant
Article id
19543

Original source

Looking at long-term performance of the S&P 500, you might wonder why you wouldn't just invest your entire 401(k) in it. The numbers are compelling: The index has averaged about 10.5% per year historically, and its returns in recent years have been even stronger. So, why not just "go all in?" Do you have a […] The post Ask an Advisor: The S&P 500 Averages About 10.5% Per Year. Why Wouldn’t I Invest My Entire 401(k) in it? appeared first on SmartReads by SmartAsset.

Read the full article on Yahoo Finance

Original article published by Yahoo Finance on December 8, 2025. Analysis and insights provided by AnalystMarkets AI.

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