According to Lookonchain, Bitcoin ETFs recorded net inflows of 5,559 BTC worth $638.68M on Sept 15, with Fidelity contributing 2,703 BTC and increasing its holdings to 207,086 BTC ($23.79B), source: Lookonchain (X, Sep 15, 2025). Ethereum ETFs posted net inflows of 81,470 ETH totaling $368.57M; Fidelity added 36,187 ETH and now holds 802,660 ETH ($3.63B), source: Lookonchain (X, Sep 15, 2025). Combined BTC and ETH ETF net inflows reached approximately $1.01B, with Fidelity accounting for about 48.7% of BTC flow and 44.4% of ETH flow, calculated from Lookonchain data and relevant for monitoring ETF-driven liquidity and market depth, source: calculation based on Lookonchain (X, Sep 15, 2025).

According to @glassnode, over 50% of ETH ETF inflows have been mirrored by rising CME ETH futures open interest, indicating TradFi positioning is not purely directional. Source: @glassnode. The firm adds that flows point to a blend of outright exposure and arbitrage strategies while ETH trades below recent local highs, shaping how ETF and futures demand interact. Source: @glassnode.

According to @rovercrc, more than $4B has flowed into ETH ETFs this month while BTC ETFs saw $624.48M in outflows, signaling a sharp demand rotation between the two assets (source: @rovercrc on X, Aug 30, 2025). According to @rovercrc, this divergence hints at a potential altseason, implying potential relative-strength upside in ETH/BTC and higher-beta altcoins if the reported flow trend persists (source: @rovercrc on X, Aug 30, 2025). According to @rovercrc, traders can focus on tracking daily net flows of ETH vs BTC ETFs and watch ETH/BTC for breakouts as confirmation before increasing altcoin exposure (source: @rovercrc on X, Aug 30, 2025).

According to @rovercrc, ETF flow data in the shared chart show ETH ETFs attracting stronger net inflows than BTC ETFs, indicating heightened institutional demand for ETH (source: @rovercrc, Twitter post dated Aug 20, 2025). The source states that blue is ETH and orange is BTC, and characterizes BTC as lagging, framing a rotation toward ETH that traders focused on relative performance may consider when allocating between the two assets (source: @rovercrc, Twitter post dated Aug 20, 2025). The trading thesis presented relies specifically on the comparison of net ETF flows between ETH and BTC in the chart, with the implication, per the source, that sustained ETH inflows could support continued relative strength versus BTC (source: @rovercrc, Twitter post dated Aug 20, 2025).

According to @cas_abbe, Ethereum’s unstaking queue is at a record high while ETH ETFs are seeing record inflows, indicating DeFi users are de-risking as institutions buy ETH (source: @cas_abbe). According to @cas_abbe, this flow divergence suggests supply is rotating from on-chain staking to ETF vehicles, so traders should track net staking withdrawals versus ETF share creations to gauge the balance of flows (source: @cas_abbe). According to @cas_abbe, traders can also watch exchange ETH balances and staking-derivative pricing to assess whether ETF demand is offsetting DeFi outflows (source: @cas_abbe).

According to @AltcoinGordon, Ethereum ETFs just booked their highest-ever weekly inflow at $2.85B, signaling exceptionally strong primary-market demand for ETH exposure, source: @AltcoinGordon on X. For trading impact, sustained ETF net creations can necessitate underlying spot ETH purchases by authorized participants under standard ETF creation processes, which can tighten exchange liquidity and support upside momentum in ETH and the ETH/BTC pair, source: U.S. ETF issuer prospectuses and SEC registration statements. To validate follow-through, monitor real-time ETF flow trackers for persistence of inflows, source: Farside Investors and SoSoValue; confirm spot trend and ETH/BTC strength on major exchanges, source: Coinbase and Binance; and assess institutional positioning via futures basis and open interest alongside options skew and IV for demand for upside hedges, source: CME Group and Deribit.

According to @rovercrc on X on Aug 16, 2025, ETH ETFs saw a record 2.85B USD net inflow this week — source: @rovercrc.

According to @rovercrc, ETH ETF flows are going parabolic based on a chart shared in an X post dated Aug 12, 2025 (source: @rovercrc on X). According to @rovercrc, the post signals rapidly accelerating net inflows into ETH ETFs but does not disclose specific flow totals, tickers, or issuers, limiting precise trade calibration from this single datapoint (source: @rovercrc on X).

According to @rovercrc, Ethereum (ETH) is significantly outperforming Bitcoin (BTC) in terms of ETF inflows this week, with ETH ETFs attracting $1.85 billion compared to just $72.06 million for BTC ETFs. This surge in ETH ETF demand signals a strong rotational trend toward Ethereum, suggesting increased investor interest in Ethereum's utility and broader use cases. Traders should monitor this flow shift as it may impact ETH price momentum and market dominance relative to BTC, indicating a possible shift in altcoin market cycles. Source: @rovercrc.

According to Cas Abbé, traders should monitor four key checkpoints to confirm altseason momentum: Bitcoin (BTC) holding above $115,000, BTC dominance below 58%, Ethereum (ETH) demonstrating relative strength through sustained ETF inflows, and the TOTAL2 market cap (which tracks altcoins excluding BTC) continuing its upward trend. If these conditions align, robust altcoin market momentum is indicated, offering strategic entry points for crypto traders (source: Cas Abbé).

According to @rovercrc, spot ETH ETFs have recorded higher inflows than spot BTC ETFs on each of the past seven trading days. This trend highlights growing institutional interest in Ethereum (ETH) over Bitcoin (BTC), which may impact ETH price momentum and short-term trading strategies. Traders should monitor ETF inflow data as a leading indicator for potential price action in ETH markets, as sustained inflows can signal increased demand and liquidity (source: @rovercrc).

According to Farside Investors, Ethereum ETF products experienced a significant net inflow of $112.3 million on June 12, 2025, with ETHA accounting for $101.5 million and FETH contributing $10.8 million. No net flows were recorded for ETHW, CETH, ETHV, QETH, EZET, ETHE, or direct ETH funds. This concentrated capital movement into ETHA and FETH highlights growing institutional interest and could signal bullish sentiment for ETH (Ethereum) in upcoming trading sessions. Traders should monitor these ETFs closely, as strong inflows often precede increased price volatility and liquidity on spot markets (source: Farside Investors).

According to Farside Investors, ETH ETF inflows are accelerating as of June 12, 2025. This uptick in inflows signals growing institutional and retail interest in Ethereum (ETH), potentially boosting liquidity and price momentum in the crypto market. Traders should monitor these inflow patterns as they often precede increased trading volumes and potential price volatility, making Ethereum a focal point for both short-term and long-term trading strategies. (Source: Farside Investors Twitter, June 12, 2025)

According to Farside Investors, Ethereum ETF net flows reached $240.3 million on June 11, 2025, with ETHA accounting for the largest inflow at $163.6 million. Other notable contributions include FETH with $37.3 million, ETHE with $13.3 million, and direct ETH purchases totaling $19.6 million. No inflows were recorded for CETH, ETHV, QETH, or EZET. This significant capital inflow into Ethereum ETFs (ETH) may indicate growing institutional interest, potentially impacting ETH price action and liquidity in the broader crypto market. Source: farside.co.uk/eth/

According to Flood (@ThinkingUSD), Ethereum (ETH) currently presents a potential shorting opportunity as a hedge, citing that ETH open interest has surged dramatically while inflows into ETH ETFs remain significantly lower than those seen in Bitcoin ETFs and are unlikely to match them. For traders, this divergence between open interest growth and lagging ETF inflows may signal increased leverage and potential downside risk for ETH, making short positions a strategic hedge in current market conditions (source: Twitter/@ThinkingUSD, 2025-05-30).

According to AltcoinGordon, Bitcoin ETFs experienced significant net inflows of $607.1 million yesterday, suggesting heightened institutional interest and strong bullish momentum for BTC trading. In contrast, Ethereum ETFs saw only $600,000 in net inflows, highlighting a divergence in investor sentiment between the two major cryptocurrencies. This surge in BTC ETF inflows may drive further price appreciation and trading volume, reinforcing Bitcoin's dominance in the current crypto market landscape. Verified data via AltcoinGordon on Twitter, May 22, 2025.

According to Lookonchain, on May 21, 2025, the top 10 Bitcoin ETFs recorded a net inflow of 3,168 BTC, equivalent to $345.16 million, with BlackRock's iShares ETF contributing 2,704 BTC ($294.62 million) and now holding 638,824 BTC ($69.61 billion). Meanwhile, 9 Ethereum ETFs reported a net inflow of 25,934 ETH ($66.52 million), with iShares adding 18,162 ETH ($46.58 million). These significant inflows underline growing institutional demand and signal bullish sentiment in the crypto market, potentially impacting Bitcoin and Ethereum prices in the short term (Source: Lookonchain, Twitter, May 21, 2025).