MSCI World Return Calculator

Understanding the MSCI World Index

The MSCI World Index follows roughly 1,500 large- and mid-cap stocks spread across 23 developed-market countries, which works out to about 85% of free-float-adjusted market cap in each one. To get the annualized return between two index values over n years, you use the CAGR formula: CAGR = (V₂ / V₁)^(1/n) − 1.

Capital International launched it in 1969, and the firm was later bought by Morgan Stanley, which is where the "MSCI" name comes from. It ranks among the oldest global equity benchmarks and one of the most quoted. The key thing to remember is what it leaves out: emerging markets aren't in there. For those you want the wider MSCI ACWI (All Country World Index), which folds in China, India, Brazil and around 24 other emerging economies. US equities carry the index, sitting near 65% of the weight, with Japan, the UK, France and Canada behind them. Since inception the historical CAGR has run about 9–10% a year in USD terms.

Applications

Most investors get exposure through ETFs. The usual names are iShares MSCI World (URTH, listed in the US) and iShares Core MSCI World UCITS (IWDA, listed in Europe and more tax-efficient if you invest there). It's the default benchmark for global active funds, pension portfolios and multi-asset strategies. Plenty of people also use it as one leg of a three-fund global portfolio, pairing it with an emerging-market ETF and global bonds.

FAQ

What is the difference between MSCI World and MSCI ACWI? MSCI World sticks to developed markets, 23 countries in all. MSCI ACWI tacks on 24 emerging markets, which pushes coverage up to roughly 99% of investable global equity.

Why is the US weight so high? Weighting follows free-float market cap, and US-listed companies (Apple, Microsoft, Nvidia, Alphabet, Amazon) make up the biggest slice of global market value. That alone pushes the US weight to about 65%.

Net Return vs Gross Return versions — which to use? Net Return reinvests dividends after withholding tax, and that's the version used for international comparisons. Gross Return assumes no tax at all. In practice most ETFs track the Net Return version.