According to the source, a claim is circulating that BlackRock’s spot Ethereum ETF purchased 78,920 ETH worth $363.2M on Sept. 15; traders should verify this against BlackRock iShares’ official daily holdings disclosure, SEC EDGAR filings, and NSCC creation basket files before positioning, source: BlackRock iShares; U.S. SEC EDGAR; DTCC/NSCC. If official data confirms a ≥70k ETH net creation on that date, this implies material net inflows that can tighten spot–futures basis; monitor CME front‑month ETH futures basis, perpetual funding rates, and the ETH/BTC spread for confirmation signals, source: CME Group; major derivatives venues’ public funding data. Cross‑check aggregate spot ETH ETF creations/redemptions and shares outstanding across issuers to distinguish rotation from new money, source: issuers’ daily holdings pages; Cboe/Nasdaq listing data.

According to Crypto Rover (@rovercrc), ETH ETFs recorded approximately $1 billion of net inflows for the first time ever, flagging a significant step-up in demand for ETH exposure. Source: @rovercrc on X, Aug 12, 2025. Net ETF inflows are typically executed via primary-market share creations that require the fund to obtain underlying exposure, which can translate into buy-side pressure on the underlying asset when creations occur. Source: iShares ETF creation and redemption mechanics (issuer educational materials). Traders should track ETH spot volume, CME ETH futures annualized basis, and perpetual funding rates to confirm whether flows align with sustained demand, as prior large crypto ETF inflow episodes have coincided with wider positive basis and higher funding. Source: CME Group education on futures basis; Kaiko market structure analyses (2024). Monitor US trading-hours performance of ETH and any ETF premium or discount to NAV to gauge flow persistence and potential liquidity frictions. Source: ETF issuer daily flow and NAV disclosures from major providers (e.g., BlackRock, Fidelity).