ProShares UltraShort MSCI EAFE (EFU)

The ProShares UltraShort MSCI EAFE (EFU) targets a daily return of negative 2x the MSCI EAFE Index. When international developed-market stocks rise, EFU falls. When they fall, EFU rises—at roughly twice the magnitude. It is a bearish bet that uses financial leverage, deployed by investors who believe developed-market equities outside North America will decline or who want to hedge their existing international equity exposure.

When a typical investor buys an international stock fund like an MSCI EAFE tracker, they own a portion of companies and they profit when those companies rise in value. EFU turns this upside down. EFU is a derivative-based position (like its sibling EFO) that moves in the opposite direction at double the rate. It is not possible to own a company through EFU; the fund holds no equity stakes at all. Instead, it holds swaps and futures that pay off when the MSCI EAFE falls.

The mechanics are similar to EFO but with inverse targets. ProShares structures EFU to deliver -2x the daily index movement using financial derivatives. If the index drops 1% in a day, EFU rises roughly 2%. If the index rises 1%, EFU falls roughly 2%. The fund rebalances daily to maintain this leverage ratio, meaning it buys and sells positions automatically every day to stay at the -2x target. This daily reset is the same double-edged sword that affects all leveraged and inverse ETFs: over periods longer than a single day, the fund’s returns diverge from the true mathematical inverse of the index due to volatility decay and the path-dependent nature of compounding.

A straightforward example illustrates the problem. Imagine the MSCI EAFE rises 5% on day one. EFU, targeting -2x, falls 10%. Now imagine it falls 5% on day two. EFU rises 10%. After two days, the index is flat (up 5%, down 5%), but EFU is also flat (down 10%, up 10%). That looks neutral, but across a year of oscillating markets, with daily rebalancing, EFU tends to lose value faster than you would expect from a simple inverse-leverage calculation. Volatility decay—the enemy of all leveraged products—hits inverse funds especially hard because the fund loses money every time it rebalances into a market that is whipsawing sideways.

EFU was originally designed for a specific and narrow use case: a trader who believes the MSCI EAFE will fall over a short period (days or weeks) and wants to profit from that decline without actually selling short or managing the mechanics of a short position. The fund offers a simple on-exchange vehicle for that bet. But reality has shown that most investors who buy inverse leveraged ETFs either hold them too long or misunderstand how they work. The fund has become a kind of trap, particularly for retail investors searching for “downside protection.”

The language of “protection” is the central danger. Many people buy EFU thinking it will protect them against a decline in their international equity holdings. But EFU is not a hedge in any traditional sense. A hedge is a position that rises when your main position falls, offsetting losses. EFU does technically rise when international stocks fall, which is correct. But leveraged inverse ETFs are poor hedges because they decay in value over time during normal markets. If you hold EFU for a year while the MSCI EAFE experiences typical volatility—say, a 15% gain for the year with monthly ups and downs—EFU will have lost money even though the index went up. The decay eats away at the position. When you finally decide to exit EFU to “un-hedge” (because the market has recovered), the fund might be worth significantly less than when you entered it, turning what seemed like protection into an actual loss.

A more effective hedge would be to simply own fewer international equities and hold the proceeds in cash or bonds. That sacrifices some upside in a bull market but genuinely protects against downside. Alternatively, an investor could buy put options on the MSCI EAFE Index, which gives a defined payoff if the index falls and costs a set premium, with no time-decay ambiguity. EFU occupies an awkward middle ground: it is leverage-based (so it decays), it is daily-reset (so it is path-dependent), and it is perpetual (so there is no defined term or payoff).

EFU does have legitimate uses. A professional trader using it as a tactical bet over days or weeks understands the mechanics and the time horizons. A hedge fund using it as a temporary short on international equities while building a longer-term view understands how to manage the decay. A sophisticated investor might use a small position in EFU to reduce overall portfolio correlation to international equities, accepting some decay as a cost of simplicity. But for most individual investors, EFU is a tool that looks safer than it is and that decays faster than intuition suggests.

The fund’s expense ratio of roughly 0.95% annually is high and reflects the cost of the swap agreements and daily rebalancing. That fee compounds a drag that is already built into the leverage structure. Over time, the combination of leverage decay and the expense ratio typically results in a fund that loses value even in a sideways market, and loses value faster than expected if the underlying index is volatile.

Trading EFU is simple—it has a decent daily volume and trades on an exchange like any stock. But the bid-ask spread is wider than a vanilla ETF, another hidden cost when you buy or sell. And because the fund’s value depends on daily rebalancing and derivative positions, the spreads can widen significantly in stressed markets when the fund’s usefulness (as a bearish hedge) is often most appealing.

The historical record of inverse and inverse-leveraged ETFs shows a consistent pattern: retail investors buy them at market peaks when fear is highest and sell them at market troughs when fear has dissipated, locking in losses. Because the funds decay steadily in sideways or rising markets, the timing creates a double penalty. If an investor had simply held a diversified portfolio through the same period, they would have recovered. An investor holding EFU through a recovery watches it decline in value even as the protective hedge was least needed.

For someone genuinely wanting to short the MSCI EAFE or hedge international equity exposure, EFU is a vehicle that exists and can be deployed, but it requires discipline about time horizons and realistic expectations about decay. A week-long tactical position might make sense. A multi-month or multi-year position is almost always a loser against alternatives. And using EFU as a “set it and forget it” hedge is almost a guarantee of value erosion over time.

Research into EFU should start with a clear understanding of the daily reset mechanism and the mathematical inevitability of volatility decay. Run a comparison: look at the MSCI EAFE’s actual performance over a recent year, calculate what -2x of that should return (accounting for daily compounding), and then see what EFU actually returned. The gap is the volatility decay, and it is usually larger than most investors expect. Read ProShares’ materials on inverse ETFs and particularly their warnings about holding periods. Then ask yourself whether a simple short exposure, a put-option hedge, or simply a reduced allocation to international equities might serve your actual goal better than a fund designed to decay in your hands.