According to Lookonchain, a wallet labeled as BlackRock deposited 4,538 ETH worth about $20.42M to Coinbase Prime and received 293.6 BTC worth about $34M from Coinbase Prime, with the entity labeling sourced from Arkham Intelligence and the flow reported by Lookonchain (source: Lookonchain; Arkham Intelligence). This on-chain flow shows net BTC received and ETH sent by the BlackRock-labeled entity via Coinbase Prime, as tracked by Lookonchain and attributed by Arkham Intelligence (source: Lookonchain; Arkham Intelligence).

According to Lookonchain, across 10 spot Bitcoin ETFs, net flow was +2,544 BTC (+$295.63M) on Sept 17; BlackRock saw +1,794 BTC (+$208.42M) and now holds 763,699 BTC ($88.74B), source: Lookonchain, X, Sep 17, 2025. BlackRock's inflow equaled roughly 70% of the day's BTC ETF net inflows, source: Lookonchain, X, Sep 17, 2025. Across 9 spot Ethereum ETFs, net flow was -11,463 ETH (-$51.58M), led by Fidelity with -10,731 ETH ($48.29M) outflows and holdings of 788,934 ETH ($3.55B), representing about 94% of the day's ETH ETF net outflows, source: Lookonchain, X, Sep 17, 2025.

According to @rovercrc, BlackRock just bought $209.2M worth of Bitcoin (BTC) (source: @rovercrc on X, Sep 17, 2025). The post does not include wallet evidence, trade venue, or iShares Bitcoin Trust (IBIT) creation details, so the report is unconfirmed pending official flow data (source: @rovercrc on X, Sep 17, 2025; source: BlackRock iShares official disclosures). Traders seeking confirmation should check IBIT daily creations/redemptions and shares outstanding on BlackRock’s site and DTCC basket data after U.S. market close, and monitor BTC price, CME futures basis, and funding on exchange dashboards for any reaction if inflows are confirmed (source: BlackRock iShares disclosures; source: DTCC public data; source: CME Group and major exchange public metrics).

According to @FarsideUK, BlackRock’s US spot Ethereum ETF recorded a daily net outflow of 20.3 million USD in the latest update, indicating net redemptions over creations for the day based on Farside Investors’ flow data at farside.co.uk/eth. According to @FarsideUK, the figure is denominated in USD and reflects issuer-level tracking for US Ethereum ETFs, specifically the BlackRock line item listed on farside.co.uk/eth. According to @FarsideUK, traders can review the full daily and cumulative issuer flows on farside.co.uk/eth to contextualize BlackRock’s outflow against peer ETFs and recent trends.

According to the source, a social post claims BlackRock added $260M in BTC and $360M in ETH to its holdings, but the post does not cite an SEC filing, fund ticker, or date, so the claim is unverified at this time; traders should seek primary confirmations before reacting. Source: the provided social post. For verification, check BlackRock iShares daily holdings and basket files for the iShares Bitcoin Trust (IBIT) and the iShares Ethereum Trust (ETH ETF), looking for increases in shares outstanding, total BTC/ETH held, and AUM that would corroborate the dollar additions. Source: BlackRock iShares fund website and daily holdings disclosures. Also confirm net creations on authorized participant activity via ETF flow dashboards and SEC EDGAR for any related updates; without these, treat the headline as unconfirmed to avoid headline risk. Source: SEC EDGAR database and ETF flow reports. Trading takeaway: until primary data confirms the inflows, prioritize liquidity-aware orders, monitor BTC and ETH spot-derivatives basis and IBIT/ETH ETF premiums-discounts for signs of real demand, and use tight risk controls to manage potential whipsaws. Source: BlackRock iShares disclosures and standard ETF primary market mechanics.

According to @FarsideUK, BlackRock’s Ethereum ETF registered a daily flow of 363.2 million US dollars on Sep 16, 2025, based on Farside Investors’ Ethereum ETF flow tracker at farside.co.uk/eth/. The source directs users to the full dataset, methodology, and disclaimers for Ethereum ETF flow calculations in USD, enabling issuer-level monitoring of ETF activity for trading analysis, as cited by Farside Investors at farside.co.uk/eth/.

According to @AltcoinGordon, a post on X dated Sep 14, 2025 claims an additional 1% of SWIF supply will be burned next week, citing an unnamed contact at BlackRock as the source of the information (source: @AltcoinGordon on X, Sep 14, 2025). The post provides no supporting evidence such as an official statement, transaction hash, wallet address, or governance notice to validate the claim (source: @AltcoinGordon on X, Sep 14, 2025). For trading purposes, the only concrete details contained in the post are the alleged burn size (1%) and the tentative timing window of next week; no exchange notices or on-chain references are included in the post (source: @AltcoinGordon on X, Sep 14, 2025).

According to @rovercrc, BlackRock bought $1 billion worth of Bitcoin (BTC) this week; the cited post provides no supporting documents or official confirmation, making the claim unverified at this time. Source: @rovercrc on X. Traders should verify this headline through primary sources before positioning, including BlackRock press releases, U.S. SEC EDGAR filings, and iShares’ iShares Bitcoin Trust (IBIT) daily flow or holdings updates. Sources: BlackRock; U.S. SEC EDGAR; iShares. Until verified, treat this as headline risk and monitor BTC spot pricing on major exchanges alongside IBIT net creations/redemptions for confirmation or refutation. Sources: @rovercrc on X; Coinbase Exchange; iShares.

According to @FarsideUK, BlackRock’s US Ethereum ETF recorded a $165.6 million daily net flow, indicating significant single-day inflows into ETH exposure via the issuer’s fund. Source: Farside Investors (@FarsideUK) tweet dated Sep 13, 2025. Full dataset and disclaimers are provided by Farside Investors at farside.co.uk/eth for verification and cross-issuer comparisons. Source: Farside Investors data hub at farside.co.uk/eth.

According to Farside Investors, BlackRock’s US Ethereum ETF recorded a US$74.5 million daily net inflow on Sep 11, 2025, based on the issuer-level flow tracker, source: Farside Investors, farside.co.uk/eth. Traders can verify the figure and access the full dataset, methodology, and disclaimers on the Farside Ethereum ETF flows page for day-over-day monitoring, source: Farside Investors, farside.co.uk/eth.

According to Farside Investors, BlackRock’s U.S. Ethereum ETF posted a daily flow of $44.2 million, with full data and disclaimers available at farside.co.uk/eth/ (source: Farside Investors). According to Farside Investors, the figure is part of its Ethereum ETF dashboard that tracks issuer-level daily USD flows for trading analysis (source: Farside Investors).

According to @lookonchain, BlackRock sold 44,774 ETH valued at $195.29 million and 900 BTC valued at $101.67 million on Sep 9, 2025. According to @lookonchain, the combined sale totaled about $296.96 million, implying approximate average values of $4,362 per ETH and $112,967 per BTC based on the figures provided. According to @lookonchain, the update noted this happened again, indicating repeated selling activity.

According to @lookonchain, addresses labeled as BlackRock sold 72,370 ETH (~$312M) and 266.79 BTC (~$29.88M) as shown on the Arkham Intelligence entity page for BlackRock on Sep 8, 2025, source: @lookonchain; Arkham Intelligence. The combined notional value of the reported sales is approximately $341.88M based on the figures provided and the associated Arkham Intelligence entity data, source: @lookonchain; Arkham Intelligence.

According to @rovercrc, BlackRock bought $400,000,000 of BTC this week; this is a claim posted on X without supporting documentation, source: @rovercrc on X, Sep 6, 2025. The post does not cite IBIT daily holdings, SEC disclosures, or a BlackRock press release, so the claim remains unverified for trading decisions, sources: @rovercrc on X; BlackRock iShares IBIT website; U.S. SEC Form 13F guidance; BlackRock Newsroom. Traders seeking confirmation should check IBIT shares outstanding and daily bitcoin holdings for net creations, review SEC EDGAR for filings, and monitor any official BlackRock statements before acting, sources: BlackRock iShares Bitcoin Trust (IBIT) daily holdings and prospectus; U.S. SEC EDGAR; BlackRock Newsroom. If verified via material IBIT net inflows or official disclosure, it would signal institutional spot demand; until then, risk management should prioritize evidence-based triggers over chase trades while monitoring BTC spot volumes and CME Bitcoin futures basis for confirmation, sources: iShares IBIT prospectus on primary market creations; CME Group Bitcoin futures education and market data; major exchange volume dashboards.

According to @CarlotatDimitra, a Dutch pension fund withdrew EUR 14B from BlackRock due to a lack of alignment on sustainability, signaling investor preference for verifiable ESG criteria (source: @CarlotatDimitra on X). The post argues that without verifiable data, institutions cannot build trust at scale, highlighting rising demand for auditable ESG metrics and blockchain-based verification rails (source: @CarlotatDimitra on X). For traders, the signal is to monitor sentiment around ESG mandates at large asset managers, potential reallocation flows in sustainability strategies, and interest in blockchain data providers that enable verifiable reporting, given the post’s emphasis on verification-driven decision-making (source: @CarlotatDimitra on X).

According to @OnchainDataNerd, Arkham-labeled wallets saw large 24-hour ETH movements: BlackRock deposited 33,884 ETH (~$148.64M), Bitmine withdrew 38,709 ETH (~$167.22M), and three fresh wallets withdrew 22,397 ETH (~$96.69M) source: X post https://twitter.com/OnchainDataNerd/status/1963820825104322916; Arkham Intelligence entity and address pages https://intel.arkm.com/explorer/entity/blackrock, https://intel.arkm.com/explorer/entity/bitmine, https://intel.arkm.com/explorer/address/0x1157A2076b9bB22a85CC2C162f20fAB3898F4101. This implies a net outflow of 27,222 ETH (~$115.27M) over the period, calculated from the reported figures, which traders track for potential liquidity shifts across labeled entities source: calculation based on @OnchainDataNerd figures on X https://twitter.com/OnchainDataNerd/status/1963820825104322916 and the referenced Arkham Intelligence pages.

According to @FarsideUK, BlackRock’s US Ethereum ETF recorded a $148.8 million daily net flow on Sep 5, 2025 (source: https://twitter.com/FarsideUK/status/1963811100815757723). The figure is listed on Farside Investors’ Ethereum ETF Daily Flow dashboard with full data and disclaimers (source: https://farside.co.uk/eth/).

According to @lookonchain, BlackRock deposited 33,884 ETH valued at $148.6M to Coinbase Prime roughly two hours before the post on Sep 4, 2025. Source: @lookonchain. The disclosure specifies the destination, transfer size, and USD value, with no additional details on purpose or subsequent movements. Source: @lookonchain.

According to @rovercrc, BlackRock sold 35,009.18 ETH valued at $152.7 million in a post on X dated September 4, 2025 (source: @rovercrc on X). Based on figures cited in the source, this implies an average sale price of roughly $4,363 per ETH (source: @rovercrc on X, author-provided amounts). The source post does not include a transaction hash, wallet addresses, execution venue, or supporting filings, so the claim is not independently verifiable from the post itself (source: @rovercrc on X). Given the absence of on-chain or venue details in the source, any immediate liquidity or price impact on ETH is indeterminate from the provided information (source: @rovercrc on X).

According to @rovercrc, BlackRock just bought $289.8 million worth of Bitcoin (BTC) (source: @rovercrc on X). The post does not include corroborating evidence such as a BlackRock press release, SEC filing, IBIT ETF creation/redemption data, or on-chain transaction details to verify the claim (source: @rovercrc on X). Traders seeking confirmation should check BlackRock’s official newsroom for announcements, SEC EDGAR for material filings, and iShares’ IBIT daily holdings and creation/redemption reports for same-day or next-day flow changes (sources: BlackRock Newsroom; SEC EDGAR; iShares IBIT daily holdings/flows page). For market validation, monitor BTC spot price and volume on major exchanges and compare against any reported IBIT creations to align price action with potential institutional activity (sources: Binance, Coinbase, OKX market data dashboards; iShares IBIT daily holdings/flows page).