BlackRock has submitted a proposal to the U.S. Securities and Exchange Commission for a Bitcoin-linked ETF. This fund aims to offer limited protection against price declines, while also capping potential profits as Bitcoin appreciates.
Summary
- BlackRock has proposed the iShares Bitcoin Managed Protection ETF with the ticker PBIT.
- The investment strategy employs Bitcoin-related call options to mitigate some losses while limiting profit potential.
- The options target an approximate 10% downside risk; however, losses for shareholders are not guaranteed to be capped.
- The fund will not directly invest in Bitcoin or Bitcoin-related exchange-traded products, as outlined in its prospectus.
- PBIT’s management fee, listing exchange, and confirmation of a trading launch have not yet been disclosed by BlackRock.
In its filing dated October 19, BlackRock indicates that the iShares Bitcoin Managed Protection ETF will operate under the ticker PBIT if approved. The investment strategy will hinge on options related to BlackRock’s iShares Bitcoin Trust ETF, also known as IBIT, along with similar Bitcoin-related instruments.
The fund aims to engage in buying and selling call options at various prices while keeping cash and short-term fixed-income securities on balance. This structure is designed to provide investors with some exposure to Bitcoin’s upward movements while minimizing their risk of specific declines.
Nonetheless, the prospectus cautions that this strategy does not offer guarantees of fixed protection. Investors may face losses, including total investment loss, especially during volatile market conditions or if the fund’s options positions underperform.
BlackRock’s Bitcoin ETF aims for limited risk and profit
BlackRock describes PBIT as a fund that seeks exposure to IBIT and similar Bitcoin-related investments, while imposing a cap on potential gains and offering a degree of downside protection.
This proposed structure is different from a conventional spot Bitcoin ETF, which typically maintains direct holdings in Bitcoin to reflect its market value. Instead, PBIT intends to gain price exposure via derivatives and retain a separate portfolio of cash and fixed-income assets.
Under the registration with the SEC, the fund plans to maintain three groups of Bitcoin-linked options, or tranches, that would generally initiate at different points during each calendar quarter.
The strategy includes purchasing call options at strike prices lower than the asset’s value at the start of each tranche. Simultaneously, it will sell call options at higher strike prices, collecting premiums aimed at offsetting costs of the acquired options.
The purchased call options are expected to provide investors exposure during Bitcoin-linked asset increases and offer a certain level of protection when prices fall below a certain threshold. Selling the higher-strike options will limit profit potential within the same tranche.
The typical configuration outlined in BlackRock’s filing indicates that the acquired options would have an exercise price approximately 10% beneath the reference asset’s starting value. This establishes an initial exposure to losses around 10% prior to fees and expenses.
The prospectus clarifies that these figures do not serve as absolutes. BlackRock retains the flexibility to adjust exercise prices, modify its holdings, and utilize options with varying expirations as market conditions evolve.
Investors in PBIT will hold an interest in a combined fund portfolio rather than a single fixed options tranche. Therefore, their actual downside exposure might differ from the initially stated protection level for any individual tranche.
PBIT will utilize options without direct Bitcoin holdings
Notably, the registration statement specifies that PBIT will not make direct investments in Bitcoin or Bitcoin-related exchange-traded products.
Instead, the fund intends to utilize options that are linked to IBIT or other similar Bitcoin exposure, along with money market instruments and short-term government bonds.
This approach differentiates PBIT from BlackRock’s primary IBIT fund, which commenced trading in January 2024. IBIT holds Bitcoin directly to track its price, minus applicable fees.
The valuation of the options will dictate how much of Bitcoin’s price fluctuations are relayed to investors. This may result in different returns compared to those from directly holding Bitcoin or IBIT, even in cases of significant price shifts.
The fund plans to leverage flexible exchange options—commonly referred to as FLEX options—that allow for customized terms. It may also utilize standardized exchange-traded options.
According to the proposed strategy, one options tranche would generally expire each month with an additional tranche being created, leading to a portfolio composed of positions established at various reference prices and subject to different limits on gains.
Part of the fund’s assets will be allocated to fixed-income securities, which are intended to generate interest income. According to the filing, these returns could help cover options-related expenses and partially mitigate losses, though they do not eliminate investment risk entirely.
The prospectus does not outline a universal cap on potential gains for all shareholders. It states that the maximum profits from individual tranches will vary based on market conditions and option pricing at the time each position is created.
Downside protection is not a guarantee of a 10% loss limit
Key qualifications accompany the proposed fund’s protection mechanism, which investors should carefully consider when assessing its framework.
For a typical tranche, BlackRock plans to acquire call options with an exercise price near 90% of the reference asset’s initial value. This establishes initial exposure to approximately the first 10% of losses on that reference asset before the purchased options offer the intended protection.
For example, if a tranche is initiated when the Bitcoin reference asset is valued at $100, and the purchased options have a strike price of $90, the initial difference is $10.
However, this $90 protection threshold will not automatically adjust upwards if the reference asset’s value increases. If the price rises to $120 and then falls to $90, it would represent a $30 drop—or a 25% decrease from the elevated value.
BlackRock warns that measured potential losses relative to a higher reference value can surpass the initial protection floor. This demonstrates why a stated protection level at the start of an options period should not be misconstrued as permanent security against price drops.
The overlapping options periods introduce an additional layer of complexity. Each tranche will have distinct starting values, protection levels, and gain limits, while the weights in the fund’s portfolio may shift.
Fees and operational costs are expected to diminish returns, amplifying effective losses. The prospectus emphasizes that the performance of the fund’s options and fixed-income investments may not align with expectations during atypical market volatility.
BlackRock has not yet disclosed the suggested management fee for the fund. The registration document also does not clarify the annual operating expenses or the exchange on which the fund will be listed.
BlackRock expands its Bitcoin ETF offerings
PBIT will represent another Bitcoin-targeted investment product building on BlackRock’s existing IBIT fund.
In June 2026, the asset manager unveiled the iShares Bitcoin Premium Income ETF, referred to as BITA, designed to create income through an options strategy while maintaining Bitcoin-related price exposure.
As covered by crypto.news in the past, BITA commenced trading on Nasdaq on June 16, following the completion of its regulatory registration. Its strategy entails selling call options to gather premiums, differing from the loss-protection focus of PBIT.
Earlier filings by BlackRock regarding Bitcoin income ETFs revealed a management fee of 0.65% for BITA, incorporating IBIT-related options into the approach. However, investors should not automatically assume the same fee structure applies to PBIT, as the new filing does not provide details on its management costs.
The rise of options trading around IBIT marks another key development in BlackRock’s Bitcoin agenda. In July, the SEC approved increased limits for IBIT options, allowing a boost in certain position and exercise limits from 250,000 to 1 million contracts.
This latest filing arrives amid a growing landscape of investment products providing diverse avenues for Bitcoin exposure, including spot funds, income-focused strategies, and options aimed at reducing losses over set periods.
Bloomberg Intelligence analyst James Seyffart has identified PBIT as another Bitcoin ETF initiative from BlackRock and noted that investors must be prepared to relinquish some potential gains in exchange for limited downside protection.
In a separate comment, Seyffart highlighted that BlackRock’s cryptocurrency ETF focus remains primarily on Bitcoin and Ethereum. He described PBIT as a fund employing options linked to IBIT while adhering to regulations established by the Investment Company Act of 1940.
The registration submitted on October 19 is a proposal and does not confirm the availability of PBIT shares for purchase. The preliminary prospectus states that securities cannot be sold until the registration is officially approved.
BlackRock has opted for an effective-date provision that allows the amendment to become effective 75 days after submission, contingent on meeting regulatory requirements and potential subsequent modifications. The preliminary prospectus is marked with an incomplete 2027 date and does not specify an expected exchange launch.
Details regarding PBIT’s management fee, initial options caps, or portfolio allocations at launch remain unspecified. The filing indicates that final protection levels and tranche weights will be disclosed through iShares once relevant positions are established.