Rebounding oil prices are, predictably, boosting Russian equities. For example, the VanEck Vectors Russia ETF (NYSEArca: RSX) and the iShares MSCI Russia Capped Index Fund (NYSEArca: ERUS) are among the best-performing single-country emerging markets exchange traded funds (ETFs) this year with an average gain of about 20%.

However, those impressive gains are proving to not be enough to keep foreign investors engaged with Russian stocks. With the oil factor in mind and the energy sectors overweight position in ETFs like RSX and ERUS, it might be logical to think that the more oil prices rally, the more investors would favor Russian stocks. That is not the case at the moment.

Related: Russia Leveraged ETF Punished

“Traders have pulled more than $448 million from Russia-focused exchange-traded funds in 2016, data compiled by Bloomberg show. Only ETFs investing in China and Taiwan have had bigger outflows in emerging markets. Investors added about $442 million into Russia-dedicated funds in 2015 even as the nation’s stocks dropped for the third year in a row,” reports Elena Popina for Bloomberg.

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RSX is the largest and most heavily traded of the Russia ETFs listed in the U.S. Following a sharp advance on the back of rebounding Brent crowd prices, Russian stocks are still inexpensive relative to broader emerging markets indexes, but some market observers advise caution.

Russia ETFs have impressed this year particularly when considering market observers widely expect Russia’s worst post-Soviet era recession to extend throughout this year. Onlookers remain cautious over the market outlook. While President Vladimir Putin and other Russian politicians argue that the worst is over, the economy is expected to remain in a recession for the year. Russia’s GDP is expected to contract again this year, extending what is becoming a lengthy recession.

Economic observers are remain cautious over the market outlook. While President Vladimir Putin and other Russian politicians argue that the worst is over, the economy is expected to remain in a recession for the year.

Related: Emerging Markets ETFs Keep Bleeding Assets

“Economists forecast an L-shaped recovery for Russia, where a sharp decline is followed by a prolonged period of slow growth. For investors, this means its time to find opportunities elsewhere, according to Rudolph-Riad Younes, who sold his stake in the largest Russia-focused fund as a portfolio manager at R-Squared Capital Management LP last year after holding it since 2009,” according to Bloomberg.

For more information on the energy markets, visit our oil category.

VanEck Vectors Russia ETF