The Hidden Concentration Risk in a Popular Global ETF

The iShares MSCI World ETF has long been considered a foundational holding for investors seeking broad global equity exposure. However, a deeper analysis reveals a significant and growing concentration within its portfolio. The top ten holdings now account for more than 26% of the fund’s total assets. This heavy reliance on a small number of mega-cap stocks, predominantly in the technology sector, introduces a substantial level of risk, prompting questions about the future of this core investment strategy.

Economic conditions across developed markets are showing signs of strain. Forecasts for real GDP growth in 2025 are expected to fall below 2024 levels. This slowdown is compounded by rising trade barriers and persistent geopolitical uncertainty, which continue to cloud the economic outlook.

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