iShares Bitcoin Fund Filing Targets Approximate Protection and an Initial 10% Loss
Key Facts
iShares Trust filed a preliminary registration statement with the U.S. Securities and Exchange Commission on October 19, 2026, for the proposed iShares Bitcoin Managed Protection ETF, with the proposed ticker PBIT. The fund aims to provide limited upside exposure to the performance of IBIT or similar bitcoin assets while seeking to offer a degree of downside protection. The fund had not begun trading when the filing was submitted. The filing says the fund seeks this outcome through an options strategy linked to reference bitcoin assets. EL7 data show that BlackRock shares closed at $1127.66 on October 26, 2026.
The fund does not buy bitcoin directly or invest in bitcoin-traded products, but obtains exposure through options linked to reference assets. The filing says the strategy typically uses call options across three overlapping tranches and sells options to help offset the cost of the purchased options. Selling options limits participation in gains above their strike prices, so the targeted protection comes with a trade-off in potential gains. The tranches typically begin on successive monthly dates during the quarter. Each month, one tranche expires and another is added, making the level of protection and participation cap dependent on the tranche timing and market conditions.
The strike prices of the purchased options are typically set at about 90% of the reference asset's value when the options are bought. The filing says this creates an initial maximum loss exposure for each tranche of about 10% of the reference asset's value before fees and expenses. But this percentage is not a fixed limit on every investor's loss; an investor's outcome varies depending on when they enter and which tranche is in place. The upside participation cap is also approximate and variable, and the filing says the fund can change the level of protection. The preliminary filing did not specify management fees, leaving that field blank. As a result, key elements of the investment cost and the amount of available participation in the asset's gains remain undecided.
The filing warns that the fund does not guarantee that it will achieve its objective or that the protection strategy will work as intended. It says investors may lose some or all of their money and offers no specified protection value, guaranteed minimum loss limit or fixed cap on gains. The warning comes in the context of options-based exposure, whose value changes with the reference asset and tranche timing. The initial figure of about 10% is also calculated before fees and expenses, so it does not mean an investor's final loss will stop there. The U.S. Securities and Exchange Commission's chairman previously said in a statement on spot products that approval of their listing did not amount to an endorsement of bitcoin, urging investors to be wary of the risks of the currency and products tied to its value.
The filing comes as IBIT had about $64.69 billion in net assets on October 26, 2026, and closed at $45.22, with a year-to-date return of -7.16% through October 23. The fund also posted a -26.80% annualized total return for the twelve months ended September 30, 2026, compared with a total return since inception of 89.96% through the same date. A report by The Motley Fool said IBIT received $665.2 million in new inflows on October 19. BlackRock already offers another options strategy through the BITA fund, which seeks to generate monthly income by selling call options on IBIT for about 25-35% of the portfolio. The company's explanation says this strategy may lag bitcoin's performance during a strong rally because selling options limits some of the gains.
The registration filing elected to become effective 75 days after submission, but that choice alone does not determine when the fund will begin trading. The filing says the securities may not be sold before the registration becomes effective and describes the information as incomplete and subject to change. It says the fund is new and has no reportable portfolio turnover data. Accordingly, fees, tranche terms, and protection and participation levels remain subject to change before the registration is complete. The filing did not provide a separate trading start date.