Invesco Dorsey Wright Emerging Markets Momentum ETF (PIE)
The Invesco Dorsey Wright Emerging Markets Momentum ETF (ticker PIE) is a bet on emerging-market stocks that have been going up. Instead of buying all emerging-market companies equally, or only the biggest ones, this fund picks stocks that show recent price strength — what traders call momentum. The idea is that stocks already moving up have structural reasons to keep moving up, at least in the near term. PIE uses an index created by Dorsey Wright, an investment research firm, which screens emerging-market stocks for that momentum signal and weights them accordingly.
What momentum means in this context
Momentum is not a company’s earnings growth or profitability — it is simply the direction and strength of recent share-price movement. A stock with strong momentum has been rising more steeply than average over a defined period (typically three to twelve months, depending on the index design). The Dorsey Wright index applies a mathematical model to rank emerging-market stocks by how much their price has moved, then includes the ones at the top of that ranking.
The reasoning behind momentum selection is not that a stock going up will keep going up forever, but that short-term price trends often persist. If a stock has been rising for six months, the reasons — growing profits, an improving outlook, or simply investor demand — often continue for another few weeks or months. Conversely, a stock that has been falling may keep falling as bad news or profit warnings accumulate. Momentum investors try to ride these waves rather than pick a stock they believe is “undervalued” on the basis of financial analysis.
What PIE holds
The fund holds a basket of stocks from emerging and frontier markets — primarily countries in Asia (India, Vietnam, Thailand, Indonesia), Latin America (Brazil, Mexico), Eastern Europe (Poland, Czech Republic), and Africa. These are countries with economies still developing or industrializing, which means higher growth potential than mature markets but also higher risk and volatility. The index selects from among the largest and most liquid stocks in these markets — it is not a venture fund seeking tiny companies, but rather a screened slice of the main investable emerging-market universe.
Because the index rebalances regularly (typically monthly or quarterly) based on the latest momentum readings, the actual holdings of PIE change more frequently than a traditional index ETF. A stock that was in the portfolio because it was rising will be dropped if its momentum fades. This turnover is higher than a static index, which means trading costs and tax efficiency are slightly worse for long-term holders in taxable accounts.
How it trades and costs
PIE is a normal ETF: you can buy or sell shares on the NASDAQ stock exchange during trading hours at market prices. The fund’s expense ratio reflects the costs of managing an index-based portfolio with regular turnover. That ratio is a bit higher than a plain-vanilla emerging-market ETF because of the turnover required to maintain momentum weighting, but it is still low compared to an actively managed emerging-market fund.
Because PIE focuses on stocks from developing countries and smaller companies within those countries, the fund’s liquidity is good but not as deep as a US large-cap fund. Individual shareholders trading small or moderate positions should have no problem, but very large trades may move the market.
Risks that matter
Momentum can reverse fast. Just as a price trend can persist for weeks or months, it can also flip quickly if company news turns bad or if overall market sentiment shifts. An investor who buys a momentum-screened stock at the peak of its run can face sudden sharp declines.
Emerging-market volatility. Emerging markets are more volatile than developed markets. Political instability, currency swings, central-bank policy shifts, and sudden changes in capital flows can shake share prices dramatically. A fund holding emerging-market stocks will swing more than a developed-market equivalent.
Currency risk. Most emerging-market stocks trade in their local currency — Brazilian reals, Indian rupees, Thai baht. When you buy PIE, you are implicitly holding all those foreign currencies. If the US dollar strengthens, those currencies weaken, which can erase profits even if the stocks themselves go up in local terms.
Concentration. Momentum screening can create concentration: if a few countries or sectors are experiencing strong price trends, the index will hold disproportionately many stocks from those regions or industries. If that momentum is bubble-like and pops, losses can be severe.
Survivorship and index construction. The index must exclude very small or illiquid stocks (you cannot own a fund that holds stocks you cannot actually trade), which limits the truly cutting-edge small-cap opportunities. The screening also inherently tilts toward whatever has worked recently, which can lead to buying high and selling low if past momentum does not predict future returns.
Who this is for and research directions
PIE is for investors who believe momentum investing works, who want exposure to emerging markets, and who are comfortable with the volatility and currency risk that comes with it. Traders and tactical allocators sometimes use momentum funds to overweight regions or sectors they expect to rally. Income investors and conservative savers should look elsewhere.
To research the fund, start with Invesco’s fact sheet and prospectus. The Dorsey Wright website explains its momentum methodology in detail — how it calculates momentum scores, which stocks it includes, and how often it rebalances. Look at the fund’s top holdings and think about whether you understand the businesses and countries involved. Read about emerging-market macroeconomics and currency trends; these often drive returns more than individual stock picking does in developing markets. Review the fund’s historical returns alongside a simple emerging-market index fund like VWO to see whether the momentum selection approach has added value or subtracted it.