iShares Core MSCI Emerging Markets ETF (IEMG)

What the fund owns and how it works

IEMG seeks to track the MSCI Emerging Markets Investable Market Index. The benchmark covers large, mid, and small companies across countries MSCI classifies as emerging and targets nearly the full free-float-adjusted investable market in each country. Eligibility also depends on size, liquidity, foreign ownership, market accessibility, and security-type rules.

The portfolio can include multiple share classes and listing venues where MSCI determines they are investable. BlackRock may use representative techniques under the prospectus rather than hold every benchmark line in identical weight. Currency translation affects the U.S. dollar result, and foreign withholding taxes can reduce dividends received by the fund.

The benchmark targets approximately 99% of free-float-adjusted market capitalization within each included country. That percentage describes the eligible investable market, not every locally registered company or every share unavailable to foreign investors.

Why readers compare or use it

IEMG's closest comparison is VWO. Both include emerging-market companies across size segments, but provider classifications create visible differences. MSCI treats South Korea as an emerging market, while FTSE Russell places it in the developed universe. South Korean companies can therefore appear in IEMG and VEA, but not in VWO.

China exposure can also differ because providers make separate decisions about A shares, offshore listings, foreign inclusion factors, and security eligibility. These are benchmark-design choices, not evidence that one portfolio manager made a tactical country call.

Full-cap coverage also means small companies can enter or leave at scheduled reviews as market-size thresholds move. Their combined weight is usually far smaller than their share of the constituent count.

Trade-offs to understand

Broad emerging-market coverage includes jurisdictions with capital controls, ownership restrictions, political intervention, disclosure differences, and uneven settlement infrastructure. A locally listed security may become difficult to trade or repatriate even while the U.S.-listed ETF remains open. Currency depreciation can offset gains measured in local terms.

Small-company inclusion expands the universe but can add thinner trading and more company-specific risk. Market-cap weighting can still concentrate results in the largest countries, sectors, and issuers. Expense ratio, foreign taxes, sampling, cash flows, and trading frictions all influence tracking.

Closest alternatives

VWO follows the FTSE Emerging Markets All Cap China A Inclusion Index and uses a different country map. VXUS combines developed and emerging markets outside the United States. EFA limits exposure to MSCI developed EAFE large and mid caps. VEA includes FTSE developed markets and can hold South Korean stocks because of FTSE's classification.

What can change

MSCI reviews market accessibility and can reclassify countries, alter foreign inclusion factors, or revise size and liquidity thresholds. Index reviews, new listings, corporate actions, and trading restrictions change the portfolio. BlackRock can revise fees and operating practices through current documents. Holding count, issuer-defined yield, assets, country weights, and spreads are point-in-time measures published with their own dates. A country reclassification can move substantial exposure between fund categories.

Evidence and links

Primary evidence: the official iShares IEMG page, current fact sheet and prospectus, the MSCI Emerging Markets IMI page, and MSCI Global Investable Market Indexes methodology.

Editorial sources

• SEC ETF glossary
• Fund documents
• Fund documents
• Issuer page
• Benchmark source
• Supporting source
• Benchmark source

Related reading

• EFA
• GLD
• IAU
• VEA
• VNQ
• VT
• VTI
• VWO
• VXUS
• Diversification
• Expense ratio
• Net asset value NAV
• What is an ETF
• What is an index fund