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the claim

Diversification reduces investment risk.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
7 sources for · 1 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Diversification reduces investment risk?

Yes. Multiple reference and peer-reviewed sources state that diversifying investments across imperfectly correlated assets reduces portfolio risk, though one study of California hospitals found no risk reduction from service diversification.

Verdict: SUPPORTED · 7 sources for, 1 against · Last checked

Evidence for · 7
Diversification (finance) - Wikipedia
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Diversification (finance) - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Diversification_(finance)

Evidence against · 1
PubMed: Does hospital diversification improve financial outcomes?
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PubMed: Does hospital diversification improve financial outcomes?. (n.d.). pubmed.ncbi.nlm.nih.gov. https://pubmed.ncbi.nlm.nih.gov/3695635/

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More for · 6
Diversification Strategies in Portfolio Management: Balancing Investment Return and Risk
2026
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Diversification Strategies in Portfolio Management: Balancing Investment Return and Risk. (2026). doi.org. https://doi.org/10.54254/2754-1169/2026.33603

Risk is still a four letter word
2000
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1949-, H. G. E. (. E. (2000). Risk is still a four letter word. archive.org. https://archive.org/details/riskisstillafour0000hart

The investment club way to stock market success
1963
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J, M. H. (1963). The investment club way to stock market success. archive.org. https://archive.org/details/investmentclubwa0000mcla

Retirement financial management for clients approaching and in retirement
2003
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Stephen, A. (2003). Retirement financial management for clients approaching and in retirement. archive.org. https://archive.org/details/retirementfinanc0000abra

Time Diversification Frontiers and Efficiency Frontiers: Implications for Long-Term Portfolio Management
2013
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Time Diversification Frontiers and Efficiency Frontiers: Implications for Long-Term Portfolio Management. (2013). doi.org. https://doi.org/10.3905/jwm.2013.16.3.031

South African bonds as an alternative diversification asset for developed bond markets
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South African bonds as an alternative diversification asset for developed bond markets. (n.d.). actacommercii.co.za. https://actacommercii.co.za/index.php/acta/article/download/902/1606

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