Everything on Index Mechanics & Diversification

The MSCI World index now holds a 74% US weighting, creating a structural concentration risk that diverges from true global diversification and mirrors historical overexposure patterns seen in Japan during the 1980s.

Impact: Portfolios relying solely on MSCI World face heightened vulnerability to US regulatory shifts and valuation compression, necessitating a shift toward FTSE All-World or MSCI ACWI IMI for broader exposure.

— from Global ETF Concentration, AI CapEx, and Portfolio Barbell Strategies · Deffner und Zschäpitz – Der Wirtschafts-Talk von WELT· Jun 02, 2026