What is return stacking?

Return stacking in one sentence

Return stacking uses leverage to layer a second investment return on top of a core allocation, so one dollar of capital supports more than one dollar of market exposure. Instead of selling stocks to make room for a diversifier, an investor can keep the stock exposure and add the diversifier through a capital-efficient fund.

How return stacked ETFs work

A return stacked ETF commonly uses futures, swaps, and cash collateral to create its exposures. The fund may target $1 of stock exposure and $1 of managed-futures exposure for every $1 invested. You own one fund, but its economic exposure is closer to two sleeves than one.

The futures contracts need only a fraction of their notional value as collateral. That is what makes the structure capital efficient. It also means the fund has financing, roll, trading, and management costs that a plain unlevered index fund does not have.

Common return stacking structures

100/100 funds target a full core sleeve plus a full second sleeve. For example, RSST combines U.S. stocks with managed futures, while RSSB combines global stocks with bonds. The extra sleeve is meaningful, but so are its costs and risks.

Lower-ratio funds use less leverage. NTSX targets roughly 90% U.S. equities with a 60% Treasury futures sleeve. A lower ratio reduces the size of the overlay, which can reduce both its benefit and its drag.

Do-it-yourself stacks combine separate funds, such as a leveraged equity ETF and a managed-futures ETF. This gives the investor control over weights, but it also requires tracking total equity exposure, rebalancing, taxes, and the distinct risks of each fund. It is not automatically equivalent to a single return stacked ETF.

What return stacking costs

The overlay has to earn more than its all-in drag. That can include the fund expense ratio, futures roll and transaction costs, and the financing embedded in the derivative position. When short-term rates are high, the hurdle for a stacked sleeve can be higher than investors expect.

A simple hypothetical makes the point. If a $10,000 portfolio carries a 100% overlay and that sleeve loses 3% after its costs, it subtracts roughly $300 in addition to the core portfolio's result. The core may still be positive, but the stacked portfolio can lag it.

When it fails

It fails when both sleeves lose at the same time. In 2022, stocks and bonds both fell hard. A fund holding both via return stacking lost on both sides and still paid borrowing costs on top.

It also fails when the second sleeve does not earn enough to cover the cost of leverage. If managed futures returns 3% and borrowing costs 5%, that sleeve is losing you 2% per year before anything else. At $10,000 that is $200 per year in the wrong direction.

Return stacking vs. alpha stacking

Return stacking is just the mechanism: hold two things on one dollar. It does not say which two things to pick. You could stack something that moves with stocks, which mostly just adds risk. Or you could stack something that tends to earn when stocks do not.

Alpha stacking is more selective. Every sleeve must have a credible case for generating real returns on its own, not just diversifying or reducing volatility. A sleeve that lowers risk but earns nothing does not clear the bar.

The portfolio is sized to keep total equity sensitivity near 1.0 and to limit drawdowns across multiple market cycles. Full participation in bull markets, shallower holes in bear markets.

Compare return stacking and alpha stacking to see how that distinction changes portfolio construction.