Quick Read
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Futures-based BITO trailed spot-holding IBIT across every measured window, with Bitcoin gaining 58% over five years.
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BITO's recurring futures roll costs compound over time, shrinking exposure with each contract swap. This is a drag that is absent in direct-holding funds like IBIT.
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Investors have already voted with $69 billion flowing into IBIT versus just $1.69 billion remaining in BITO.
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The ProShares Bitcoin ETF( NYSEARCA:BITO ) became the first U.S. Bitcoin fund when it launched on October 19, 2021, giving investors exposure to Bitcoin(CRYPTO:BTC) through futures contracts rather than the coin itself. Since that launch date, BITO's share price is down significantly. The structural cause is the recurring cost of rolling futures contracts forward. While holders bought BITO for a sound reason -- it was once the only regulated way to get Bitcoin exposure in an ETF -- today it proves to be ineffective. The iShares Bitcoin Trust ETF( NASDAQ:IBIT ) holds Bitcoin directly, and that difference in structure is the focus of this comparison.
Both Funds Lost Heavily Over the Past Year
Over the past year, BITO posted a price change of -35.76%, and IBIT posted a price change of -33.79%. Bitcoin itself declined 29.64% between October 7, 2025, and October 7, 2026. During that time, the spot fund lost roughly a third of its value.
That said, IBIT was a painful investment over the past year. What follows compares two structures around the same falling asset. Whether to own Bitcoin at all is a separate decision.
Matching Windows Favor the Spot Fund
The fair test compares both funds over identical dates. All figures below are price changes based on delayed prices recorded during the October 7, 2026 session, when BITO traded at $11.14 and IBIT at $47.20.
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| Period |
BITO Price Change |
IBIT Price Change |
|---|---|---|
| One year |
-35.76% |
-33.79% |
| Year to date |
-7.34% |
-4.93% |
| One month |
3.88% |
4.36% |
IBIT leads in all three windows. Because both funds essentially track the same asset over matching periods, the difference goes back to how each fund provides that exposure. In falling months, BITO fell further. In the rising month, it rose less.
How Rolling Futures Contracts Eat Into Returns
A futures contract is an agreement to buy an asset at a set price on a set date, so every contract comes with an expiration date attached. To keep its Bitcoin exposure, a futures fund must repeatedly sell the contract approaching expiration and buy a later-dated one.
When the later contract costs more than the expiring one, the fund pays that difference every single time it rolls. The same dollars buy slightly less exposure after each roll, and the effect compounds over years. A fund that holds Bitcoin itself has no contract to expire and nothing to roll. Its value moves with the coin's price, less operating costs.
For rough context, Bitcoin's own price rose 58.48% over the five years from October 8, 2021 to October 7, 2026, a window starting shortly before BITO's launch. BITO's price stayed near where it began over a similar stretch.
Investors Have Already Moved Their Money
BITO reported net assets of $1.69 billion as of May 31, 2026, per its SEC filing. IBIT showed net assets of $69.03 billion in a snapshot dated October 7, 2026. Both are point-in-time filing and snapshot figures.
IBIT's fact sheet dated March 14, 2026 shows 99.93% of disclosed holdings in the Bitcoin trust itself. In plain terms, IBIT owns the asset you want exposure to.
Taxes and Risk Shape Any Fund Change
In an IRA or 401(k), selling BITO and buying IBIT causes no immediate tax. In a taxable account, compare your cost basis with BITO's current price. A loss can offset other gains, while a gain creates a tax bill in the year you sell. Investors with large embedded gains may want to review the tax impact with a tax professional before making changes.
Switching leaves your risk profile unchanged. IBIT carries Bitcoin's full volatility, as its past year shows that clearly.
Why the Wrapper That Owns the Coin Leads
For anyone exploring Bitcoin exposure in a brokerage account, IBIT's structure tracks the coin more closely. It holds the asset directly, avoids the roll cost built into BITO's design, and led on every matching window measured here. The decision to own Bitcoin, and through which structure, remains yours.
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