--- title: "BlackRock files for buffer bitcoin ETF with capped upside and limited losses" description: "BlackRock filed with the SEC for the iShares Bitcoin Managed Protection ETF, ticker PBIT, which seeks bitcoin exposure through options with capped gains and some downside protection rather than holding bitcoin directly, per Decrypt, CoinDesk and Bitcoin Magazine. Decrypt reported IBIT took in…" language: en canonical: "https://whycoinmoves.com/en/events/bitcoin-blackrock-seeks-shield-bitcoin-investors-891d8cfd4f9725" published: 2026-10-20T14:29:57.000Z updated: 2026-10-21T00:21:00.000Z indexable: true --- # BlackRock files for buffer bitcoin ETF with capped upside and limited losses BlackRock filed with the SEC for the iShares Bitcoin Managed Protection ETF, ticker PBIT, which seeks bitcoin exposure through options with capped gains and some downside protection rather than holding bitcoin directly, per Decrypt, CoinDesk and Bitcoin Magazine. Decrypt reported IBIT took in… Attributed sources: [Cointelegraph](), [The Block](), [Decrypt](), [CoinDesk](), [Bitcoin Magazine]() ## Key facts BlackRock filed with the SEC for the iShares Bitcoin Managed Protection ETF, ticker PBIT, which seeks bitcoin exposure through options with capped gains and some downside protection rather than holding bitcoin directly, per Decrypt, CoinDesk and Bitcoin Magazine. Decrypt reported IBIT took in $665.2 million on the filing day, its only inflow among 12 funds. Evidence strength: Multiple publishers, 5 publisher group(s) (Cointelegraph, The Block, Decrypt, CoinDesk, Bitcoin Magazine); this describes source coverage, not truth or causation. After site detection, observed returns were 5 minutes: +0.09% (20/10/2026, 14:29 → 20/10/2026, 14:34, UTC; Gate · USDT); 1 hour: -0.57% (20/10/2026, 14:29 → 20/10/2026, 15:29, UTC; Gate · USDT). Unlisted windows are unavailable. In the preceding 30 days, the 99th percentile of absolute hourly returns was 1.23% (OKX · USDT; cutoff 20/10/2026, 14:29, UTC). This hourly baseline is not directly comparable with a minute move. ## Returns after site detection | Window | Return | BTC | Difference from BTC | Actual sampled interval (UTC) | Source | | --- | --- | --- | --- | --- | --- | | 5 minutes | +0.09% | +0.09% | 0.00 pp | 20/10/2026, 14:29 → 20/10/2026, 14:34 | Gate · USDT | | 1 hour | -0.57% | -0.57% | 0.00 pp | 20/10/2026, 14:29 → 20/10/2026, 15:29 | Gate · USDT | | 24 hours | — | — | — | — | — | ## Historical hourly baseline | Metric | Value | | --- | --- | | Ready | true | | Coverage | 100.0% (720/720) | | Median absolute hourly return | 0.15% | | 99th percentile of absolute hourly returns | 1.23% | | BTC beta | 1.00 | | Source / cutoff (UTC) | OKX · USDT / 20/10/2026, 14:29 | ## Claims and open questions - Per the SEC filing cited by Decrypt, each tranche's protection typically starts at about 90% of the reference asset's value, limiting initial losses to roughly 10% before fees. - Decrypt reported, citing SoSoValue, that IBIT took in $665.2 million on Monday and held $66.37 billion in net assets, while Fidelity's FBTC lost $83.6 million and Grayscale's GBTC $54.9 million. - Bitcoin Magazine reported that IBIT received $665.2 million in fresh investment on Monday, citing Farside Investors, and currently handles $65.7 billion. - What management fee BlackRock will set for PBIT, which Decrypt said was left blank in the filing. - What level of downside protection and upside cap the fund will ultimately offer, which CoinDesk said the filing did not specify. ## Source evidence - [BlackRock files for third Bitcoin ETF, still no Solana or XRP]() — Cointelegraph; published 20/10/2026, 08:12; received 20/10/2026, 08:20 (UTC). - [BlackRock files for bitcoin ETF offering downside protection and upside exposure to IBIT]() — The Block; published 19/10/2026, 22:00; received 20/10/2026, 08:55 (UTC). - [BlackRock Files for 'Buffer' Bitcoin ETF as IBIT Draws $665M in a Day]() — Decrypt; published 20/10/2026, 09:13; received 20/10/2026, 09:16 (UTC). - [BlackRock seeks to shield bitcoin investors from losses after rival fund weathers 50% crash]() — CoinDesk; published 20/10/2026, 14:28; received 20/10/2026, 14:29 (UTC). - [BlackRock Files for Bitcoin ETF With Downside Buffer and Capped Upside]() — Bitcoin Magazine; published 20/10/2026, 16:26; received 20/10/2026, 16:31 (UTC). ## Recent BTC events and market reactions - [Swiss regulator FINMA approves country's first retail bitcoin ETF]() — Published 20/10/2026, 12:15 (UTC) · Multiple publishers (4 publishers) · Regulation · 5m +0.20% / 1h +0.03% - [JPMorgan's first Bitcoin return forecast projects 10% a year but keeps it out of core models]() — Published 20/10/2026, 08:54 (UTC) · Multiple publishers (5 publishers) · General news · 5m -0.09% / 1h -0.07% - [AnchorWatch opens Nevada trust company for bitcoin custody with fees capped at $10,000 a month]() — Published 19/10/2026, 22:28 (UTC) · Multiple publishers (2 publishers) · General news · 5m +0.11% / 1h +0.08% - [US spot Bitcoin ETFs log largest daily inflow in nearly a month]() — Published 20/10/2026, 05:39 (UTC) · Multiple publishers (4 publishers) · Market watch · 1h -0.12% - [Strategy buys 267 Bitcoin for $22 million, repurchases $193 million of STRC]() — Published 19/10/2026, 12:30 (UTC) · Multiple publishers (4 publishers) · General news · 1h -0.20% - [Full coin archive]() ## Research for this archive - [Altcoin beta to Bitcoin: BTC, ETH, SOL and DOGE hourly returns]() - [Perpetual funding rates and annualized yield: a 2025 comparison]() - [Bitcoin halving and bull markets: evidence from four halvings]() - [Bittensor (TAO): Bitcoin beta, volatility and the AI crypto narrative]() [Methods and limitations]() Publisher count is not independent evidence count. Price changes cannot verify news or prove causation.