GraniteShares YieldBOOST SMCI ETF (SMYY)

GraniteShares YieldBOOST SMCI ETF (ticker SMYY) is an income-generating fund built on a simple premise: if you believe Super Micro Computer’s stock will not crash, you can extract premium by selling put options and distributing that premium as regular income. The fund holds this belief by design — it owns a leveraged ETF tracking SMCI, then sells puts on that same position, collecting option premiums and paying out the proceeds as weekly distributions. For investors who need yield and are willing to accept capped gains and leveraged downside risk, SMYY offers a mechanical income source. For everyone else, it is a cautionary tale about why borrowing money to fund distributions can end badly.

The fund was launched by GraniteShares in late 2025 as part of its YieldBOOST family, a suite of option-based income ETFs designed for investors seeking alternatives to dividend-yielding stocks and bond funds. The YieldBOOST concept treats an ETF as an option-writing platform: hold an underlying asset, sell options against it regularly, and distribute the premium as an income stream. GraniteShares applied this approach to Super Micro Computer, which has become a volatile, high-profile play on artificial intelligence and data-centre infrastructure spending.

The mechanics are the key to understanding both the appeal and the danger. SMYY does not own Super Micro Computer directly. Instead, it owns shares of a 2x leveraged long ETF that tracks SMCI — meaning the fund’s baseline exposure is doubled compared to owning SMCI stock outright. This leverage is intentional. On top of this leveraged position, the fund actively sells out-of-the-money put options on that same leveraged ETF on a weekly basis. A put option obligates the seller to buy the underlying at a set price if the option holder exercises. The fund collects premium for this obligation, pockets that premium as income, and distributes it to shareholders weekly.

Here is how the strategy performs in a calm market: SMCI trades sideways or edges higher. The weekly put options expire worthless because the stock price stays above the strike. The fund keeps the premium, distributes it, and resets the trade the following week. This repeats mechanically, generating a steady income stream as long as volatility remains low and the stock does not crash. In this regime, the fund feels like a perpetual income machine. Investors see weekly payouts, the leveraged position still captures upside if SMCI rises, and the option premium tops up the yield. This is why option-writing strategies attract investors: they work beautifully in calm markets.

But calm markets are not the baseline. Suppose SMCI drops 20 percent in a sharp two-week correction. The leveraged 2x position backing the fund loses 40 percent. The out-of-the-money puts sold by the fund are now in-the-money, meaning they have real loss attached to them. The fund faces a choice: take the loss immediately by closing the position, or hold and hope the stock bounces. If it holds and the stock continues falling, losses compound. The fund’s capital erodes, and distributions may have to be suspended. If the fund closes positions at a loss, shareholder value evaporates in a way that no amount of subsequent weekly premiums can recoup.

Volatility itself is a problem for income strategies. Put option values rise when expected price swings increase. A sudden spike in SMCI’s implied volatility can cause mark-to-market losses on the puts the fund has already sold, forcing the fund to realize losses or hold positions that have moved sharply against it. High volatility, paradoxically, is terrible for funds that profit from selling options when that volatility arrives after the sale.

The other constraint is capped upside. If SMCI rallies 40 percent in a month, the leveraged position would normally gain 80 percent. But the puts sold by the fund cap that gain. The fund’s obligation to sell puts at certain strike prices means that if the stock moves far above the strike, the fund is giving away the profits from its long position to the option buyer. The fund has traded unlimited upside for the modest premium collected from selling the option. This is a one-sided bet: you keep the premium (good) and cap your gains (bad) while your downside remains leveraged and uncapped.

Super Micro Computer itself is a concentrated risk. The company supplies processors and servers to data-centre operators building out artificial intelligence infrastructure. This is a secular growth story, but it is also a crowded, competitive market where margins are thin and customer concentration is high. A single adverse development — disappointing guidance, a major customer loss, increased competition — can crater the stock. Because SMYY uses 2x leverage, a 50 percent SMCI decline translates into a theoretical 100 percent loss for the leveraged ETF underlying the fund, which would wipe out SMYY shareholders entirely.

For tax purposes, SMYY is inefficient outside of tax-sheltered accounts. The weekly option rebalancing creates frequent taxable events, capital gains from closing option positions are realized and distributed, and the distributions themselves are often taxed as ordinary income rather than capital gains. Holding SMYY in an IRA, 401k, or other tax-advantaged wrapper is essential if you own it.

The appeal of SMYY is that it distributes income mechanically and can yield more than traditional dividend stocks or bonds. The danger is that option-based income is borrowed from tomorrow. You are capturing premium today in exchange for capped gains and leveraged losses tomorrow. This works as long as volatility remains low and the stock does not crash. The moment that assumption breaks — and it always does, eventually — the fund swings from income machine to loss multiplier. Investors who buy SMYY need to treat it as a tactical position sized small relative to total portfolio, not a core holding.