When investing in developing economies, BlackRock's iShares offers two prominent choices: the iShares Core MSCI Emerging Markets ETF (IEMG) and the older iShares MSCI Emerging Markets ETF (EEM). While both funds target growth potential across regions like China, India, and Taiwan, they cater to distinctly different strategies regarding cost, diversification, and trading style.

Evaluating these funds requires looking beyond basic geographical exposure to examine expense ratios, holdings depth, liquidity, and dividend distributions.

Cost Efficiency and Portfolio Diversity

Launched in 2012, the iShares Core MSCI Emerging Markets ETF (IEMG) is significantly more affordable for long-term holders. It carries an expense ratio of just 0.09%, compared to 0.72% for the older EEM fund, which was established in 2003.

Beyond fees, IEMG provides a much wider net of holdings. It features 2,853 stocks, incorporating small-capitalization companies that the older fund entirely omits. By comparison, EEM takes a narrower approach with 1,184 holdings focused strictly on large- and mid-cap equities.

Despite their different sizes and scopes, both funds share similar top sector allocations:

  • Information Technology: 39% for IEMG and 41% for EEM
  • Financials: 19% for IEMG and 21% for EEM
  • Consumer Discretionary: 8% for both funds

Top holdings are also closely aligned, featuring major players like Taiwan Semiconductor Manufacturing, Samsung Electronics, and SK Hynix.

Yield and Trading Liquidity Differences

The core fund also delivers a stronger income component. IEMG has paid $1.80 per share over the trailing 12 months, resulting in a 2.4% dividend yield based on a recent share price of roughly $75.74. Meanwhile, EEM has paid $1.11 per share over the trailing 12 months, translating to a 1.8% yield on a share price around $62.01.

However, EEM holds a distinct advantage when it comes to daily trading volume. EEM boasts an average daily volume of 19.4 million, which is nearly double IEMG's 11 million. This higher volume creates tighter bid-ask spreads.

Choosing Between IEMG and EEM

Deciding which ETF is better depends heavily on an investor's timeline and trading approach:

  • Active Traders and Institutions: EEM is often preferred by active traders, options strategists, and institutional investors. Its high liquidity and tight bid-ask spreads matter more for short-term execution than a 0.72% annual fee held over a brief period.
  • Buy-and-Hold Investors: IEMG is better-suited for long-term investors. Its ultra-low expense ratio, higher dividend yield, and broader exposure to small-cap stocks provide a more complete and cost-effective slice of local economic growth over time, supported by a total return over the last five years that edges out EEM.

Ultimately, matching the fund to your specific investment horizon—whether short-term trading or long-term accumulation—will determine the right vehicle for emerging market exposure.