The MSCI Emerging Markets Index tracks large- and mid-cap equities across markets MSCI classifies as emerging, targeting about 85% of each country's free-float value.
The MSCI Emerging Markets Index is a global equity benchmark that tracks large- and mid-cap companies across markets MSCI classifies as emerging. It targets approximately 85% of the free-float-adjusted market capitalization in each included country, but it does not cover every emerging-market stock.
The index is often used to define an emerging-markets allocation, evaluate active managers, and underlie index funds and derivatives. It is a benchmark calculation, not an investment that can be purchased directly.
MSCI first classifies markets and then applies its Global Investable Market Indexes methodology to eligible securities. The standard MSCI Emerging Markets Index represents the large- and mid-cap segments of each included market.
The eligible universe is screened for factors such as:
Country membership and constituent counts can change. MSCI’s market-classification process considers size and liquidity requirements and market accessibility, while its annual classification review can lead to consultations or later reclassification. A country’s popular description as “emerging” does not by itself determine index membership.
MSCI uses a Foreign Inclusion Factor (FIF) to represent the proportion of a security’s shares available to international investors after considering free float and applicable foreign ownership restrictions.
A simplified constituent weight is:
where:
The published index level also uses a divisor. Divisor adjustments preserve continuity when index membership, share counts, or corporate actions change for reasons other than investment performance.
Assume two eligible companies have the following values:
| Company | Full market capitalization | FIF | Free-float-adjusted value | Starting weight |
|---|---|---|---|---|
| A | $12 billion | 0.50 | $6 billion | 60% |
| B | $8 billion | 0.50 | $4 billion | 40% |
The simplified index uses $10 billion of combined free-float-adjusted value. Company A receives a 60% weight even though its full market capitalization is also 60% of the combined total in this example.
Now suppose Company A’s FIF were only 0.25 while Company B’s remained 0.50:
| Company | Revised free-float-adjusted value | Revised weight |
|---|---|---|
| A | $3 billion | 42.9% |
| B | $4 billion | 57.1% |
Company B becomes the larger constituent despite having the smaller full market capitalization. The example shows why full company size alone is insufficient when interpreting MSCI index weights.
MSCI conducts comprehensive index reviews in February, May, August, and November. Reviews can update eligible securities, size-segment assignments, FIFs, share counts, and other inputs. Corporate events can also trigger changes outside the regular review cycle under the relevant methodology.
Descriptions that limit full rebalancing to May and November and call the February and August reviews merely interim no longer match MSCI’s current comprehensive quarterly process. Analysts should use the latest review announcement and methodology when reconstructing historical membership or forecasting index trades.
| Variant | Dividend treatment | Main analytical issue |
|---|---|---|
| Price return | Excludes ordinary cash-dividend reinvestment | Understates the return of a dividend-reinvesting strategy |
| Gross return | Reinvests dividends before methodology-based withholding taxes | May exceed what a taxable foreign investor can retain |
| Net return | Reinvests dividends after methodology-based withholding-tax assumptions | Depends on standardized assumptions, not one investor’s exact tax result |
| Currency version | Translates the index into a stated currency | Adds exchange-rate effects to local equity performance |
| Currency-hedged version | Applies a defined hedging methodology | Adds hedge costs, timing, and residual currency exposure |
The index name alone is not enough for a performance comparison. Check the index code, return type, currency, and valuation date.
| Index | Market classification | Size coverage | Important boundary |
|---|---|---|---|
| MSCI Emerging Markets | Emerging | Large and mid cap | Excludes emerging-market small caps |
| MSCI Emerging Markets IMI | Emerging | Large, mid, and small cap | Broader size coverage than the standard index |
| MSCI ACWI | Developed and emerging | Large and mid cap | Combines MSCI World and emerging-market standard segments |
| MSCI World | Developed | Large and mid cap | Excludes emerging and frontier markets |
| MSCI EAFE | Developed outside the U.S. and Canada | Large and mid cap | Does not represent emerging markets |
An emerging-markets fund may track the standard index, the IMI, an ESG-screened variant, another MSCI index, or a benchmark from a different provider. Similar fund names do not prove that their country and security universes match.
Institutional investors use the index to:
A benchmark is most useful when it matches the portfolio mandate. A small-cap, frontier-market, single-country, or sustainability-screened portfolio may require a different comparison index.
These risks do not imply that every emerging market behaves alike. Country and company analysis remains necessary because the index combines different economies, currencies, institutions, and business exposures.
Assuming the index covers all emerging-market companies. The standard index covers large and mid caps and targets about 85% of free-float-adjusted value in each country.
Treating “emerging market” as a permanent country label. MSCI reviews classifications, and market accessibility can change.
Using economic growth as a return forecast. GDP growth, corporate earnings, valuation, dilution, currency movements, and investor returns are different measures.
Ignoring index concentration. A global label does not ensure equal country or company weights.
Comparing a fund with the wrong benchmark variant. Standard, IMI, ESG, net-return, gross-return, hedged, and unhedged series can produce different results.
This article provides general financial education. It is not personalized investment, trading, portfolio-construction, tax, or legal advice and does not recommend an index or index-linked product.