So I've been looking into Russia ETF options lately, and it's kind of wild how limited the choices are. RSX is basically the only serious player in this space for U.S. investors looking for Russia exposure.

Here's the thing about RSX - it's been around since late 2007 and has become the go-to Russia ETF by a massive margin. We're talking about $2.4 billion in assets, which makes it more than four times bigger than the next largest Russia-focused fund. The fund tracks the MVIS Russia Index and holds about 31 stocks, with daily trading volume around $180 million. That liquidity matters if you actually want to get in or out without moving the market.

What caught my attention is how concentrated the Russian economy actually is. Nearly 38% of this Russia ETF is weighted toward energy - companies like Gazprom and Lukoil dominate the holdings. That makes sense when you realize Russia is one of the world's largest oil producers outside OPEC. Materials is the second-largest sector at around 18%, then financial services and consumer staples make up the rest.

Now, the interesting part is valuation. RSX currently trades at a price-to-earnings ratio under nine, which looks cheap on the surface. But here's where you have to be careful - Russian stocks trade at consistent discounts to broader emerging markets for a reason. Sometimes that's a legitimate value opportunity, and sometimes it's a value trap. The volatility is also something to consider. Three-year standard deviation sits around 27.4%, which is significantly higher than the broader MSCI Emerging Markets Index.

Most diversified emerging markets funds barely touch Russia - the MSCI EM Index only allocates 3.7% to the country. So if you actually want meaningful Russia exposure, a dedicated Russia ETF like RSX is probably your only real option. Just go in with your eyes open about the concentration risk and volatility profile.