Key Takeaways
- • BlackRock filed on Monday, October 19, 2026 for the iShares Bitcoin Managed Protection ETF, proposed ticker "PBIT," its third Bitcoin ETF filing, according to an SEC filing reported by Stocktwits.
- • The proposed fund would not hold bitcoin or IBIT shares directly; it would use mostly FLEX options on IBIT, plus cash and short-term bonds, across three overlapping options positions started a month apart.
- • Each position would set initial protection at about 90% of IBIT's value, limiting first-loss exposure to roughly 10% before fees; the upside cap and management fee were left unspecified in the filing.
- • IBIT drew over $665 million in net inflows on Monday, the only US spot Bitcoin ETF with inflows that day, according to SoSoValue data; US spot Bitcoin ETFs collectively recorded $526.60 million in net inflows.
- • Bloomberg Intelligence ETF analyst James Seyffart said similar buffer products already exist from Calamos, First Trust and Innovator, but noted that BlackRock's entry "tends to make a big splash."
Summary
BlackRock filed on Monday for the iShares Bitcoin Managed Protection ETF, a buffered bitcoin product designed to limit downside while capping potential gains, according to Stocktwits. Bloomberg Intelligence ETF analyst James Seyffart described the fund as a "buffer" Bitcoin fund and said it "will offer downside protection but investors will give up some upside to get that protection." The filing is BlackRock's third Bitcoin ETF application, following the spot iShares Bitcoin Trust ETF (IBIT) and the iShares Bitcoin Premium Income ETF (BITA), which sells call options on IBIT to generate income. Seyffart noted that BlackRock still offers only Bitcoin and Ethereum products.
According to the SEC filing cited by Stocktwits, the fund seeks upside exposure to IBIT and or similar bitcoin exposure up to an approximate limit, while seeking a level of downside protection. It would not hold bitcoin or IBIT shares directly. Instead, it would use options on IBIT, mostly FLEX options, alongside cash and short-term bonds. The fund would run three overlapping options positions, each initiated a month apart. Each position would begin with protection set at about 90% of IBIT's value, limiting the initial loss to about 10% before fees. The filing did not specify the upside cap and left the management fee blank. It is set to take effect 75 days after submission, which would be in early January 2027.
Flows into BlackRock's existing product were strong on the filing day. IBIT took in over $665 million in net inflows on Monday, according to SoSoValue data, and was the only US spot Bitcoin ETF to record inflows that day. IBIT now holds $66.37 billion in net assets, the largest among US spot Bitcoin ETFs, which collectively hold $105.46 billion. US spot Bitcoin ETFs recorded $526.60 million in net inflows overall.
Seyffart noted the product is "nowhere near the first of its kind," pointing to comparable buffer funds from Calamos, including the Calamos Bitcoin Structured Alt Protection ETF - January (CBOJ), FT Vest's Bitcoin Strategy Floor15 ETF - January (BFJA), and Innovator's Uncapped Bitcoin 20 Floor ETF (QBF). He added that when BlackRock enters a space, particularly this one, "it tends to make a big splash." Bitcoin traded around $82,900 on Tuesday morning, up over 1%, and retail sentiment on Stocktwits remained in the "extremely bearish" zone.
According to the SEC filing cited by Stocktwits, the fund seeks upside exposure to IBIT and or similar bitcoin exposure up to an approximate limit, while seeking a level of downside protection. It would not hold bitcoin or IBIT shares directly. Instead, it would use options on IBIT, mostly FLEX options, alongside cash and short-term bonds. The fund would run three overlapping options positions, each initiated a month apart. Each position would begin with protection set at about 90% of IBIT's value, limiting the initial loss to about 10% before fees. The filing did not specify the upside cap and left the management fee blank. It is set to take effect 75 days after submission, which would be in early January 2027.
Flows into BlackRock's existing product were strong on the filing day. IBIT took in over $665 million in net inflows on Monday, according to SoSoValue data, and was the only US spot Bitcoin ETF to record inflows that day. IBIT now holds $66.37 billion in net assets, the largest among US spot Bitcoin ETFs, which collectively hold $105.46 billion. US spot Bitcoin ETFs recorded $526.60 million in net inflows overall.
Seyffart noted the product is "nowhere near the first of its kind," pointing to comparable buffer funds from Calamos, including the Calamos Bitcoin Structured Alt Protection ETF - January (CBOJ), FT Vest's Bitcoin Strategy Floor15 ETF - January (BFJA), and Innovator's Uncapped Bitcoin 20 Floor ETF (QBF). He added that when BlackRock enters a space, particularly this one, "it tends to make a big splash." Bitcoin traded around $82,900 on Tuesday morning, up over 1%, and retail sentiment on Stocktwits remained in the "extremely bearish" zone.
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