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BlackRock Files for Buffer ETF Aimed at Capping Bitcoin Downside and Upside

BlackRock has applied to launch the iShares Bitcoin Managed Protect ETF, a defined-outcome fund designed to cushion losses in exchange for a ceiling on potential gains.

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BlackRock submitted an application on October 19, 2026, to launch the iShares Bitcoin Managed Protect ETF under the ticker PBIT. The proposed vehicle is a buffer, or defined-outcome, fund intended to absorb a portion of investor losses over a specified outcome period by using options contracts, funded in part by capping upside participation over the same timeframe.

The product is structured to mitigate downside risks associated with holdings such as the iShares Bitcoin Trust ETF (IBIT), which manages more than $65 billion in assets. Investor demand for standard spot exposure remains active, with IBIT recording $665 million in inflows on the day the PBIT application was submitted.

The filing comes amid broader market weakness, with Bitcoin trading near $81,511 on October 20 after falling 26.3% over the prior twelve months. Under a defined-outcome mechanism, investors entering mid-cycle or following sharp rallies may experience modified protection profiles and restricted returns relative to the asset's historical performance.

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