BlackRock Files for 'Buffer' Bitcoin ETF as IBIT Draws $665M in a Day
What Decrypt reports, why it matters and what remains unconfirmed.

The story in one view
- Reported by
- Decrypt
- Coverage lens
- Markets and price action
- Published
- Evidence status
- Cross-source reports linked
What Decrypt reports
The iShares Bitcoin Managed Protection ETF would use options on IBIT to limit losses, in exchange for giving up some upside.
The immediate significance
The report describes direct security exposure for users, funds or software. The immediate significance is the potential harm; the confirmed scale and any protective action require technical or primary evidence beyond the publisher summary.
CoinDesk and Decrypt have also published a related report, providing another attributed account to compare without treating repetition as proof.
What remains unknown
- The publisher summary does not contain the complete victim, transaction or technical evidence.
- The report does not establish the final loss or exposure, or whether remediation is complete.
- No matched primary document independently supporting the central claim is linked to this page.
The named assets, right now
Spot quotes from Kraken, checked .
How the story developed
CoinDesk and Decrypt are reporting related developments. Reports are shown in publication order; separate coverage is not independent confirmation.
CoinDesk Bitcoin ETFs just saw their biggest day in a month thanks entirely to BlackRock
Fidelity's FBTC and Grayscale's GBTC saw outflows of $83.6 million and $54.9 million, respectively.
DecryptCurrent briefing BlackRock Files for 'Buffer' Bitcoin ETF as IBIT Draws $665M in a Day
The iShares Bitcoin Managed Protection ETF would use options on IBIT to limit losses, in exchange for giving up some upside.
CoinDesk Equity weakness could damp demand for bitcoin after biggest ETF inflows in a month
Your day-ahead look for Oct. 20, 2026
Decrypt Bitcoin ETFs Post Their Best Day in Nearly a Month as BlackRock Does All the Buying
U.S. spot Bitcoin ETFs took in $526.7 million on Monday, their biggest day since Sept. 22. BlackRock's IBIT supplied all of it while Fidelity and Grayscale funds bled.
Related Articles And Podcast
Further reporting and analysis on this story.
Bitget Ends Access for Some Users | Bitcoin’s Weekend Test | Digital Euro Pilot Timetable | Daily Crypto Roundup.
What happens when your exchange changes access before you change your investment plan? In the October 17, 2026 Daily Crypto Roundup, we examine Bitget’s…
Read the notes and play the episode