--- title: "US Bitcoin ETFs draw $527M in biggest showing since September" language: en canonical: "https://whycoinmoves.com/en/events/bitcoin-8a04a927f96ab9" published: 2026-10-20T05:49:57.000Z updated: 2026-10-20T11:07:57.000Z indexable: false --- # US Bitcoin ETFs draw $527M in biggest showing since September Attributed sources: [Cointelegraph](), [CoinDesk](), [The Block](), [Decrypt]() ## Key facts 4 publisher(s) tracked. Independent verification remains incomplete. Evidence levels describe source coverage, not the probability that a claim is true. Evidence strength: Multiple publishers, 4 publisher group(s) (Cointelegraph, CoinDesk, The Block, Decrypt); this describes source coverage, not truth or causation. After site detection, observed returns were 1 hour: -0.12% (difference from BTC 0.00 pp; 20/10/2026, 13:52 → 20/10/2026, 14:52, UTC+8; OKX · 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, 13:49, UTC+8). 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+8) | Source | | --- | --- | --- | --- | --- | --- | | 5 minutes | — | — | — | — | — | | 1 hour | -0.12% | -0.12% | 0.00 pp | 20/10/2026, 13:52 → 20/10/2026, 14:52 | OKX · USDT | | 24 hours | — | — | — | — | — | ## Historical hourly baseline | Metric | Value | | --- | --- | | Ready | true | | Coverage | 99.9% (719/720) | | Median absolute hourly return | 0.15% | | 99th percentile of absolute hourly returns | 1.23% | | BTC beta | 1.00 | | Source / cutoff (UTC+8) | OKX · USDT / 20/10/2026, 13:49 | ## Claims and open questions - No independently verified causal explanation is available. ## Source evidence - [US Bitcoin ETFs draw $527M in biggest showing since September]() — Cointelegraph; published 20/10/2026, 13:39; received 20/10/2026, 13:49 (UTC+8). - [BlackRock files for third Bitcoin ETF, still no Solana or XRP]() — Cointelegraph; published 20/10/2026, 16:12; received 20/10/2026, 16:20 (UTC+8). - [Bitcoin ETFs just saw their biggest day in a month thanks entirely to BlackRock]() — CoinDesk; published 20/10/2026, 16:24; received 20/10/2026, 16:27 (UTC+8). - [BlackRock’s IBIT Bitcoin ETF draws $665 million inflow, highest since October 2025]() — The Block; published 20/10/2026, 15:05; received 20/10/2026, 16:55 (UTC+8). - [BlackRock files for bitcoin ETF offering downside protection and upside exposure to IBIT]() — The Block; published 20/10/2026, 06:00; received 20/10/2026, 16:55 (UTC+8). - [BlackRock Files for 'Buffer' Bitcoin ETF as IBIT Draws $665M in a Day]() — Decrypt; published 20/10/2026, 17:13; received 20/10/2026, 17:16 (UTC+8). ## Recent BTC events and market reactions - [AnchorWatch opens Nevada-chartered bitcoin custody with $370M insurance cap]() — Published 20/10/2026, 06:28 (UTC+8) · Multiple publishers (2 publishers) · General news · 5m +0.11% / 1h +0.08% - [Reports: Strategy buys $22M in bitcoin, repurchases $193M in STRC]() — Published 19/10/2026, 20:30 (UTC+8) · Multiple publishers (2 publishers) · General news · 1h -0.20% - [Full coin archive]() [Methods and limitations]() Publisher count is not independent evidence count. Price changes cannot verify news or prove causation.