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

Daily flow data for Aug. 21 extends the weekly trend into the current period, with Bitcoin and Ethereum ETFs posting a fifth consecutive session of net inflows. Bitcoin products added $307.5M on the day, led by BlackRock's IBIT with $239.3M, while Ethereum ETFs recorded $184M in net inflows, paced by $150.8M into BlackRock's ETHA. Solana ETFs also saw net inflows of $10M, bringing the combined daily total for the three digital-asset funds to $501.5M. The sustained multi-day streak marks a continued broadening of demand beyond the weekly figures, with fresh capital flowing to both established and newer products alike.

Bitcoin's rally extended well beyond the fund flows themselves, with the asset closing the week to Aug. 23 at $77,387 after a $14,264 gain — its largest weekly dollar advance on record and a 22.7% rise, the strongest weekly performance in over three years. The move was initially boosted by US Treasury plans to expand its long-dated bond buyback program, a step aimed at lowering yields. BlackRock's IBIT alone contributed roughly $1.3B of the $1.92B Bitcoin ETF intake. On-chain, the share of short-term holders' supply in profit jumped from 26.1% to 74.9%, but transfers from those investors to exchanges climbed to 28,600 BTC, a level analysts flag as potential sell pressure. Markets now turn to Jackson Hole, where Fed Chair Kevin Warsh is expected to deliver his first address as chair.

Despite the weekly surge, the fund complex remains in negative territory for 2026: spot Bitcoin ETFs have seen roughly $2.9 billion in net outflows year-to-date, while ether products are down about $191.8 million, narrowing the combined deficit to roughly $3.1 billion from $5.7 billion. August has so far brought $2.38 billion in BTC ETF inflows, making it the strongest month of the year. BlackRock's IBIT attracted $1.33 billion across five consecutive trading days, with flows climbing from $160.2 million to $503 million before easing on Friday, a pattern analysts described as a bullish "flipping the bird" signal. Separately, the SEC proposed a new Regulation Crypto Assets framework offering two exempt offering tiers, and the White House convened industry executives to push for the CLARITY Act, with a Senate vote slated for Sept. 15.

Bitcoin extended its rally into Monday, briefly trading above $80,000 for the first time since May before easing to around $79,670, a gain of roughly 3.2% in 24 hours and 24.47% over the past seven days, per market data. The intraday high reached $79,954 in New York morning trading. The move coincided with reports that a senior U.S. Treasury official said the department could use about $1 trillion from the Treasury General Account to support its expanded long-dated bond buyback program, a step seen as further pressuring long-term yields. Bloomberg Intelligence ETF analyst Eric Balchunas called last week's ETF intake "one of the benefits of a commodity in a constant state of supply shock." Liquidation data showed $376.19 million in crypto positions closed over 24 hours, with shorts accounting for $218.86 million.

(as of 21:09 UTC) At the current $78,978.73 print, COINOTAG's proprietary 42-indicator composite S/R scoring engine places immediate support at $77,469.22 with a score of 57/100 (moderate), driven by ATR Lower, Pivot Point, and Fibo 0.114. A daily close below that level would bring $75,249.24 into view, which carries a 64/100 (STRONG) score on Flip R→S, Fibo 0.214, and S2, while the deeper $72,666.77 floor holds a 62/100 score on POC, Ichimoku Kijun, Fibo 0.382, and Ichimoku Tenkan. On the upside, resistance at $81,231.76 rates only 35/100 (moderate) on ATR Upper and R3; a break above it would open the path to $86,038.35 (46/100) on Fibo 1.272, with the strongest resistance at $78,960.68 (71/100) now beneath the spot and acting as a potential pivot. Derivatives positioning is balanced but slightly long: perp funding is -0.0015%, open interest stands at $15.30B, and the long/short account ratio is 1.02, with 50.5% of accounts long. The Fear & Greed Index at 73/100 (Greed) and RSI at 82.02 signal stretched sentiment, so a cooling toward the $77,469 support is possible before the next leg higher. The bullish thesis holds above $77,469; a daily close below it would invalidate the setup and expose $75,249.