Bitcoin ETF and Ethereum ETF Inflows Reach Nine-Day Streak

US spot Bitcoin ETFs recorded $242.30 million in net inflows on August 27, extending the Bitcoin ETF inflow streak to nine consecutive trading sessions. Spot Ethereum ETFs added $235 million, also reaching a nine-day streak. This marks a sharp continuation from August 7, when Bitcoin and Ethereum ETFs attracted about $102 million and $50 million, respectively, while Solana and XRP products recorded no net change. Bitcoin and Ethereum ETFs reportedly drew a combined $2.3 billion during the latest week covered, their strongest combined weekly inflow since October. Total net assets in US spot Bitcoin ETFs reached about $79.16 billion, with category trading volume at $8.23 billion. Flows were previously spread across major issuers including BlackRock, Fidelity, ARK 21Shares and Grayscale. Bitcoin traded near $79,500 on August 28, up 1.1% over 24 hours, while Ether was around $2,490. Spot Solana ETFs attracted $60.91 million and Hyperliquid-related products received $24.42 million, suggesting institutional interest may be broadening beyond Bitcoin and Ethereum. However, these smaller products remain far behind the leading funds, and their registration and disclosure standards were not clearly established in the report. For traders, the Bitcoin ETF and Ethereum ETF inflow streaks are a potentially bullish demand signal. Sustained institutional buying may reduce exchange-held supply and support BTC and ETH prices. Traders should nevertheless monitor whether inflows continue and whether recent gains hold, as ETF flows can reverse quickly during periods of macroeconomic or market stress.
Bullish
The nine-session inflow streak for Bitcoin ETFs and Ethereum ETFs is a constructive short-term signal for BTC and ETH. The latest daily inflows of $242.30 million and $235 million, combined with roughly $2.3 billion in weekly inflows, indicate sustained institutional demand rather than a one-day allocation. Persistent ETF purchases can absorb available market supply, strengthen spot-market demand and support prices if broader risk sentiment remains stable. The move also appears broader than the earlier August 7 picture, when Solana and XRP products recorded no net change. New inflows into Solana ETFs and Hyperliquid-related products suggest rising institutional interest in alternative crypto assets, although their smaller scale means their direct price impact is more limited. The data standards for these products are also less clear, reducing the reliability of direct comparisons with US spot Bitcoin and Ethereum ETFs. In the short term, traders may interpret the inflow streak as a reason to maintain bullish BTC and ETH positioning, particularly while Bitcoin is near $79,500 and Ether is around $2,490. Over the longer term, the signal remains conditional. ETF flows can reverse during macroeconomic stress, profit-taking or a deterioration in risk appetite. A break in the nine-day streak, weakening trading volume or failure of BTC and ETH to hold recent gains would weaken the bullish case. Overall, the reported flows favor a bullish classification, but they do not guarantee a sustained rally.