With emerging markets stocks and ETFs surging this year, frontier markets may be getting lost in shuffle, but that does not mean they are disappointing. Just look at the iShares MSCI Frontier 100 ETF (NYSEArca: FM), which is up about 25% year-to-date.

Frontier markets include those less advanced capital markets from the developing world with an investable stock market that is less established than those in the emerging markets. Consequently, frontier market stocks are consider much riskier than other global markets and are not for the faint of heart.

“Several countries saw rising GDP growth in 2Q17, including Nigeria, Ghana, Ecuador, Mongolia and Vietnam. Export growth has been improving in three quarters of the countries on JP Morgan’s Next Generation Market Index (NEXGEM) and FX reserves have been rising in two thirds of the countries,” according to Fitch Ratings.

Vietnam and Nigeria combine for over 18% of FM’s weight with the former being the ETF’s third-largest country allocation.

Frontier markets are not as connected to each other as emerging and developed markets, which are more closely tied to the global economy – the MSCI Frontier Market Index has exhibited a low correlation to both the MSCI Emerging Markets Index and the MSCI World Index. Due to their more isolated nature, frontier markets can be more volatile, but the isolation offers a degree of resiliency in periods of increased global uncertainty, which may further help these economies dodge the storm from President Donald Trump’s protectionist policies in the U.S.

“Frontier markets have seen a further improvement in economic activity in recent months,” said Fitch. “The stabilisation in commodity prices has helped resource producers and the pick-up in Chinese import growth has been widely felt.”

FM allocates almost 40% of its combined weight to Argentina and Kuwait, two countries that could gain emerging markets status in the next year.

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The frontier markets are characterized by high volatility and are more illiquid than more developed markets. Investors may also contend with political instability and other risks.

However, these frontier countries have large and growing populations that could translate to huge growth potential. These economies could become the Brazil, Russia, India and China of tomorrow.

Investors have added $19.1 million to FM this year.

or more information on the ETF market, visit our ETF performance reports category.