Emerging Markets ETFs: How Much to Own and Which Index

You could already own emerging markets

If you hold a total world fund like VT, you own these markets already. On 30 June 2026 it held 3.5% in Taiwan and 2.6% in China, plus smaller weights in India, Brazil and 20-odd other developing economies. Buying VWO or IEMG on top does not add an asset class. It raises a weight you already carry.

How big that weight is depends on who counts. MSCI puts emerging markets at 12% of the investable world, $12.4 trillion against $101.5 trillion for its global index. FTSE files South Korea under developed markets, so a FTSE-based fund like VT shows a smaller emerging slice. Same companies, different label.

So the decision is sizing. Hold the market weight, or go above it. Going above it needs a reason, and the reason most often given does not hold up.

Faster economic growth has not meant higher returns

Emerging economies grow faster than developed ones, so their stock markets should return more. Researchers have tested that idea for decades. It fails.

Ritter (2005) measured it across 16 countries from 1900 to 2002 in the Pacific-Basin Finance Journal and found a cross-sectional correlation of -0.37 between compounded real equity returns and compounded real growth in GDP per capita. Faster-growing countries paid their shareholders less.

The reason is simple. Much of a country's growth comes from new capital and new companies. When savings fund a new firm or a fresh share issue, the gains go to those new shares. The ones already in the index see none of it. Productivity gains mostly reach consumers as lower prices and workers as higher wages, unless a company holds a lasting monopoly.

Hsu, Ritter, Wool and Zhao (2022) re-ran the test across 15 emerging and 21 developed markets in the Journal of Portfolio Management and confirmed that GDP growth fails to predict country returns. Growth in earnings per share and dividends per share tracked returns closely. That is the part of growth that reaches shareholders.

What an emerging markets index holds

On 30 June 2026 the MSCI Emerging Markets Index held 1,178 stocks across 24 countries. Four countries made up 81% of it: Taiwan 27.34%, South Korea 23.72%, China 19.03%, India 11.09%.

Information technology alone was 45.26% of the index. Taiwan Semiconductor was 15.08%, Samsung Electronics 8.16%, SK Hynix 7.65%. Three chipmakers, about 31% of the index. The top 10 holdings came to 40.23%.

An emerging markets fund is mostly a bet on Asian chipmakers, with Chinese internet companies like Tencent and Alibaba next in line. The China-centred version of this story is out of date. China is the third weight, and Taiwan and South Korea together are more than half the index. Fund by fund, the country split is on the emerging markets ETF page.

The index decides whether you own South Korea

Index providers disagree about South Korea. FTSE Russell classifies it as developed and still listed it that way in April 2026. S&P Dow Jones has called it developed since 2001. MSCI calls it emerging, and it is 23.72% of the index.

That disagreement changes what your fund owns. VWO tracks the FTSE Emerging Markets All Cap China A Inclusion Index and SCHE tracks the FTSE Emerging Index, so neither owns a single Korean share. SPEM follows the S&P Emerging BMI Index, same result. IEMG tracks the MSCI Emerging Markets Investable Market Index, so roughly a quarter of it is Samsung, SK Hynix and their peers.

Two funds sit in the same screener category and differ by a quarter of the portfolio. So check your developed-markets fund first. If it counts Korea as developed, an MSCI fund like IEMG doubles that exposure. If it does not, a FTSE fund like VWO leaves Korea out of your portfolio altogether.

Mind the cost

EEM charges 0.72% a year. IEMG charges 0.09%. Both are iShares funds tracking MSCI emerging markets indexes, and EEM still holds roughly $30 billion.

That gap is 0.63 percentage points a year on near-identical exposure, or $63 a year on every $10,000 you hold. EEM came first and kept the deep trading volume institutions need to move large positions. If you buy monthly and hold for years, that volume does nothing for you, and only the expense ratio shows up in your results.

The cheap end of the category runs 0.06% to 0.09%: VWO and SCHE at 0.06%, SPEM at 0.07%, IEMG at 0.09%. You can sort emerging markets funds by cost to see the whole spread.

A country under sanctions leaves the index

These markets are riskier than developed ones, and part of that risk is political. A market can close to foreign investors.

In early 2022, sanctions and capital controls following Russia's invasion of Ukraine left foreign investors unable to trade Russian shares. MSCI consulted institutional investors and concluded the market no longer met its accessibility rules. On 2 March 2022 it announced Russia would move from emerging to standalone status "at a price that is effectively zero", effective at the close of 9 March. Holders could not sell first. Every fund tracking the index removed the shares at that value and booked the loss.

Governments and index providers made that call, and an index fund has to follow. Russia was a small weight at the time. China is 19%, which is why EMXC exists at 0.25%. Dropping China removes the exposure most investors worry about and lifts Taiwan and South Korea to about 63% of what remains, so you trade one concentration for a heavier one.

Emerging markets trade at a discount to developed markets

On 30 June 2026 the MSCI Emerging Markets Index traded at 11.65 times forward earnings and 2.58 times book value, against 19.17 and 4.15 for the MSCI World Index. Its dividend yield was 1.93% against 1.52%.

Ritter's paper ends on this point: fast-growing countries only reward shareholders when you buy them cheaply. You can measure the discount today. The growth is a forecast.

That discount exists for a reason. Over the 10 years to June 2026 the index returned 10.07% a year against 13.14% for developed markets, at 17.44% annualized volatility against 14.89%.

How much to allocate in your portfolio

Market weight is about 12% under MSCI's definition and a little less in a FTSE-based fund, and a total world fund gives it to you without a second ticker. That is the default, and it needs no defending.

Going above it is a concentrated bet, so size it like one. A 20% weight in an MSCI fund like IEMG puts about 10% of your equity in Taiwan and South Korea, and roughly 9% in technology stocks on top of the technology a US index fund already carries. If what you want is to correct home bias, a developed-markets fund does that job with less concentration. And every extra ticker costs you attention and rebalancing work.

Read the holdings sheet before the label. A fund named for emerging markets tells you which countries a committee left out of the developed index. It does not tell you that Taiwan Semiconductor alone is 15% of the MSCI index, and a larger share still of a fund that leaves Korea out. That number moves with one semiconductor cycle, and it will read differently on the next fact sheet.