According to @lookonchain, across 10 Bitcoin ETFs, net inflows totaled +1,205 BTC (+$139.75M) on Sept 19, with Fidelity contributing 828 BTC (+$96.09M) and aggregate holdings at 207,370 BTC ($24.05B). Source: @lookonchain on X, Sept 19, 2025. According to @lookonchain, across 9 Ethereum ETFs, net inflows were +41,150 ETH (+$185.17M), with BlackRock adding 34,688 ETH (+$156.1M) and aggregate holdings at 817,134 ETH ($3.68B). Source: @lookonchain on X, Sept 19, 2025. According to @lookonchain, based on the reported figures, Fidelity captured roughly 69% of the BTC ETF net inflows (828/1,205) and BlackRock about 84% of the ETH ETF net inflows (34,688/41,150), with combined BTC+ETH ETF net inflows around $324.92M for the day. Source: @lookonchain on X, Sept 19, 2025.

According to @rovercrc, BlackRock’s ETH holdings increased 65% over the past 30 days while BTC holdings rose 4%, implying ETH accumulation is 15x faster than BTC and signaling an ongoing ETH rotation at the world’s biggest asset manager (source: @rovercrc on X, Aug 16, 2025). For trading, the reported tilt provides a reference for monitoring ETH/BTC relative momentum and institutional allocation trends using these holdings changes as a signal (source: @rovercrc on X, Aug 16, 2025).

According to Crypto Rover, BlackRock currently holds $4 billion worth of Ethereum (ETH), signaling a significant move by traditional finance into the crypto market (source: Crypto Rover, Twitter, June 3, 2025). This large-scale investment by one of the world's largest asset managers is likely to increase institutional confidence in ETH and could drive further inflows from other major investors. Traders should monitor potential impacts on ETH price volatility and liquidity, as well as possible shifts in market dominance between Bitcoin and Ethereum.

According to @OnChainCollege, BlackRock now controls almost 2% of the total Ethereum (ETH) supply as a result of ongoing ETF inflows. This substantial accumulation signals heightened institutional interest and could tighten ETH liquidity on major exchanges. Traders should monitor ETF flow data and BlackRock's holdings closely, as increased institutional ownership may impact price volatility and longer-term supply-demand dynamics (source: @OnChainCollege on Twitter, June 2024).