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RePEcPortfolio & Allocation

Passive Investing, Diversification Risk and Financial Stability

Passive ownership raises return correlations and reduces achievable portfolio diversification by 2.1%, shifting risk from firm-specific to market-wide components.

Featured in No. 139 on 13 Nov 2026 · 1 day after release

Decomposition of diversification benefits and risk parity across passive ownership levels, showing correlation and marginal risk effects.
Figure 5: Decomposition of ∆DB and ∆σ
Released
12 Nov 2026
First featured
No. 139 · 13 Nov 2026
Published in
Not yet, as far as Semantic Scholar knows
Fanfare
3 of 5
Identifier
RePEc:bon:boncrc:crctr224_2025_793
Authors
I. Gufler

Citations and venue from Semantic Scholar (ODC-BY), refreshed weekly. Summary: Quant Letter (CC BY 4.0).

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