US Bitcoin (BTC) Spot ETFs Log $1.9B Weekly Inflows, Strongest Since October

Spot ETF Inflows Hit $2.6B

US spot Bitcoin (BTC) and Ethereum ETFs posted combined net inflows of $2.6B last week, the strongest weekly total since October 2025, based on issuer-reported fund flow data. The combined total was not an all-time high, but it marked the best seven-day stretch for the two fund categories since late 2025. Bitcoin funds accounted for $1.9B of that total, while Ethereum funds contributed $697.2M; both were the largest weekly net inflows for their respective fund categories so far in 2026. The result reversed the prior week's combined net outflow of $392M, a swing of roughly $3.0B in seven days. Taken together, the past three weekly periods have produced cumulative net inflows of about $3.3B, highlighting how quickly the flow picture turned after the brief mid-August pullback. The week to Aug. 7 had already produced combined inflows of $1.1B, the strongest period since April, and last week's figure was more than double that print. Most buying took place during US trading hours on Aug. 19 and Aug. 20, as Bitcoin pushed higher with the broader crypto market. For Bitcoin specifically, the weekly inflow of $1.9B was the largest since the week ending Oct. 10, 2025, when spot BTC funds absorbed $2.7B; cumulative net inflows since the US launch total $53.7B. That weekly result still fell short of the $2.7B peak set in the early-October period, while the Ethereum figure remained below the roughly $1.3B inflow reported at the start of that month. Ethereum products added $697.2M, the highest weekly inflow since the week ending Oct. 3, 2025, after a marginal $2.3M outflow in the preceding period. The daily flow pattern differed from the summer's quieter sessions, with the two largest inflows arriving on consecutive days rather than as a single one-off print. The flow data capture primary-market creations rather than secondary-market turnover, so the dollar totals understate the full scale of trading activity in the products.

BTC Fund Volume Jumps 219%

Trading activity expanded at a similar pace. Weekly volume in the Bitcoin ETF complex jumped from $6.9B to $22.1B, a gain of more than 219%, the kind of surge that usually accompanies large primary-market creations. On Aug. 19, the funds recorded $517.2M of net inflows, their largest daily intake since May 4; the following session added $606.3M, bringing the two-day total to roughly $1.12B. The two sessions alone accounted for more than half of the weekly net inflow into the Bitcoin funds. Net assets held by the Bitcoin funds rose 25.4% week over week to $96.1B, reflecting both fresh capital and Bitcoin's price appreciation. Ethereum, the largest altcoin by market capitalization, saw a comparable pattern: weekly volume climbed 259.4%, from $1.9B to $6.9B, while net assets advanced 35.9% to $14.3B. That increase was driven by net inflows as well as by a sharp rise in Ether's price. The weekly flow sequence now reads as $1.1B of inflows in the period to Aug. 7, followed by $392M of outflows in the period to Aug. 14, followed by the latest $2.6B inflow. Market observers caution that the burst is not by itself proof of a durable uptrend, noting that large-holder accumulation in Bitcoin remains limited. Their view is that a convincing move above $80,000 would likely require clearer evidence that Federal Reserve policy risk has moved away from further tightening, a condition that has not yet been confirmed by economic data. The volume expansion in both ETF groups shows that primary-market flows were accompanied by a much larger increase in secondary-market activity.

$78.4K Resistance in Focus

At the current $77,598 print, COINOTAG's proprietary 42-indicator composite S/R scoring engine rates the immediate resistance at $78,447 with a score of 84/100 (STRONG), driven by HVN and BB Upper. A daily close above that level would put the next targets at $79,867 and then $85,402. On the downside, support at $75,319 scores 68/100 (STRONG), while the deeper $71,924 floor carries a stronger 74/100 score on Ichimoku Kijun and Supertrend. Derivatives positioning is modestly bullish: perp funding is 0.0064%, open interest stands at $14.85B, and the long/short account ratio is 1.15, with 53.5% of accounts long. The Fear & Greed Index at 73/100 (Greed) and RSI at 79.1 signal stretched sentiment, so a cooling toward $75,319 is possible before the next leg higher. The bullish thesis holds above $75,319; a daily close below it would invalidate the setup and expose $71,924.