How YieldMax ETFs track stocks without owning them

A synthetic single-stock fund can obtain stock-like directional exposure through options while keeping almost all of its cash in collateral. It is one part of the broader YieldMax fund structure, and the explanation should not be applied automatically to the other YieldMax fund types, which include direct equity baskets, funds of funds and inverse products.

This guide derives the exposure from the two contracts that create it, then sets out the several reasons a fund’s realized return is not the derivation.

A call option gives its buyer the right, but not the obligation, to buy an underlying asset at a stated strike price by an expiration date. A put gives its buyer the right to sell at the strike. The buyer is long the option and pays premium. The seller is short the option, receives premium and accepts the corresponding obligation if the option is exercised.

At expiration, a long call is worth the stock price minus the strike when that difference is positive, and nothing otherwise. A short put is the mirror image: nothing above the strike, and the shortfall below it.

The short put is therefore a source of downside exposure. When the stock finishes below the strike, the put holder can sell at the strike and the fund bears the difference. Premium received reduces that loss by the premium and no more. Selling a put is not downside protection.

Take a call and a put on the same underlying, with the same strike and the same expiration. Buy the call, sell the put. At expiration the two together are worth:

Long call + short put = stock price − strike price

The expression is linear, with no kink at the strike. Below it, the call expires worthless and the short put loses the shortfall. At the strike, both expire without intrinsic value. Above it, the put expires worthless and the call gains the excess.

Assume a stock trading near $100. The fund buys one $100 call and sells one $100 put, both expiring on the same date. The figures below exclude premiums, collateral interest, dividends, fees and transaction costs. One standard US equity option contract normally represents 100 shares, so each per-share figure scales by 100.

For otherwise equivalent European-style contracts, the relationship between the two options and the stock is commonly written:

Call − put = stock − present value of the strike − present value of dividends

Rearranged, a call minus a put plus the discounted strike resembles the stock, after adjusting for dividends. The cash component is the part that matters here. A long call and short put on their own produce the stock price minus the strike at expiration — not the stock price.

An options pair can be opened for far less initial net premium than buying the shares, because it postpones paying the strike. That does not remove the obligation. The fund holds Treasury securities and cash as collateral against it and must meet variation, margin, assignment and settlement requirements as they arise. The collateral earns interest, which offsets the financing cost embedded in option prices.

Dividends separate the two positions as well. A direct shareholder receives declared dividends; a synthetic holder generally does not. Expected dividends are instead priced into the call and the put. The MSTY prospectus notes that the fund’s returns do not include MSTR dividends except to the extent it directly owns MSTR. Prospectus, 27 February 2026.

The identity assumes matching strikes and expirations, and evaluates the options at expiration. A fund does neither exclusively. It values and trades positions long before then, and option prices in the meantime depend on implied volatility, time remaining, interest rates, dividends and liquidity. Bid-ask spreads and commissions add implementation cost on every trade.

Several further differences apply at the same time:

• the options need not match exactly in size or strike, and the adviser may use deep-in-the-money calls, swaps, direct shares or several option series;
• the fund writes income calls or call spreads, which deliberately remove part of the upside;
• expenses reduce net asset value continuously;
• Treasury interest adds to it;
• an investor’s purchase date determines which outstanding cap they inherit.

Synthetic long exposure is an accurate description of the directional building block. “Exactly the same as owning the shares” is not an accurate description of the fund.

American-style equity options can normally be exercised before expiration. Early exercise matters most for in-the-money calls around dividends, and for deep-in-the-money puts when financing dominates the remaining time value. A short option can be assigned at any point, requiring settlement on the contract’s terms.

Funds frequently close positions before expiration and open later-dated ones. This is rolling. The closing trade realizes a gain or loss against the original premium; the new trade sets a fresh strike, expiration and premium. A single-expiration payoff chart therefore cannot describe a multi-period return, which is the reason the figure above is labelled as terminal.

The MSTY prospectus states that the fund intends to maintain exposure primarily through options and may roll expiring or exercised contracts, and warns that doing so can produce high turnover. It also describes the fund’s reliance on clearing members, collateral arrangements and functioning markets. Prospectus, pp. 5 and 10.

MSTY’s SEC portfolio schedule dated 31 January 2026 reported purchased MSTR calls together with written MSTR calls and puts, each contract representing 100 shares. The written puts created the downside exposure, the purchased calls the upside, and the separately written calls generated premium while limiting participation above their strikes. SEC schedule of investments.

That schedule is a month-end snapshot and should not be read as the fund’s positions on any other date. The prospectus permits direct shares, swaps, deep-in-the-money calls and other instruments, so the construction is a daily fact rather than a fixed property of the fund. The holdings tutorial covers reading a current file field by field, and distribution mechanics follows the cash from written options through to the declared payment.

Delta estimates how much an option’s value moves for a $1 move in the underlying, holding other inputs approximately constant. A call near the money commonly has a delta between zero and one. A put’s delta is negative, so a fund that is short the put picks up positive exposure from it. A matched call-and-put pair has an aggregate delta of approximately one share per share-equivalent under standard conditions, and drifts as strikes, expirations and contract sizes diverge.

Delta is local rather than a promise. Gamma measures how delta itself changes as the stock moves; vega, sensitivity to implied volatility; theta, the effect of time passing. A fund running several option layers carries these exposures from the synthetic long and the written-call overlay simultaneously, and a single “100% exposure” label summarizes none of them.

Option value also splits into intrinsic value — what the option would be worth if exercised immediately — and time value, which reflects the chance of a favourable move before expiry. When the adviser closes a position early, both components settle into the realized result, and the clean terminal table stops determining the outcome.

A holdings table can look conservative because government securities carry a large positive market value while options carry a small one. A fund can hold nearly all of its net assets in collateral and still run roughly stock-sized directional exposure through the options beside it. Market value and reference exposure are different measurements and should be read in separate columns.

Collateralization reduces the risk that option obligations are unsupported by assets. It does not protect net asset value from losses inside those obligations. If the reference stock falls, the short-put liability rises while the Treasury position stays comparatively stable, and net assets absorb the difference.

Standard exchange-traded options are centrally cleared, which substitutes a clearing organization into settlement and removes most direct bilateral exposure. In exchange, the fund depends on its clearing members, on margin processes and on the clearing system continuing to function. FLEX options can customize terms within exchange rules, and swaps, where used, bring their own counterparty arrangements. Equity-option specifications.

Liquidity is the other implementation constraint. A large fund may need many contracts, and spreading them across strikes or expirations reduces market impact while making the position less like a single textbook pair. In volatile markets spreads widen and rolls can happen at unfavourable prices. These are the gaps between the identity and a shareholder’s realized return.