Bitcoin ETFs Post $2.6B Weekly Inflow, Largest Since October

US-listed Bitcoin and Ethereum exchange-traded funds recorded their largest combined weekly inflow since October 2025, drawing $2.6 billion in the seven days ended August 21, according to fund-flow data. Bitcoin products captured $1.92 billion of that total. The surge marked a sharp reversal from the prior week, when Ethereum funds alone posted a combined outflow of $391.96 million.

Custodia Bank founder and CEO Caitlin Long attributed the recent risk-on move in Bitcoin and other digital assets to macroeconomic forces tied to the US Treasury. Long said the Treasury’s announcement that it would more than double its buybacks of 30-year bonds functioned as a form of yield-curve control, pressuring the US dollar and supporting risk assets. She also pushed back on the idea that Bitcoin’s four-year cycle has ended, arguing that miner economics still reflect the cycle’s natural dynamics.

Galaxy Research highlighted a key technical threshold for Bitcoin, noting that the 50-week moving average sits near $82,470. The firm’s historical study of all completed Bitcoin bear markets since 2011 found that weekly closes above this level have proven more reliable than daily signals, with 11 of 13 reclaims holding without a lower low. Galaxy said a weekly close above $82,000 would further support the view that the June 30 low marked the cycle bottom, while cautioning that the current rally remains unconfirmed below that zone.

Bitcoin’s recent breakout has taken price from compressed levels through the $66K-$67K and $72K-$74K resistance zones, reaching roughly $79K before pulling back toward $77K, according to technical analysis. On-chain data shows the move pushed spot price above the realized-cost levels of the 1-3 month and 3-6 month holder cohorts, around $64K and $74K respectively, bringing those groups back into unrealized profit. The 18-month to 2-year realized price near $87K and higher bands near $95K and $105K remain overhead.

Ten years ago today, on August 22, 2016, Bitcoin traded at $586, according to data cited on X. With BTC now trading in the $77,000 range, the asset has risen roughly 130x over the decade. Long-term holders have seen one of the strongest multi-year appreciations in modern financial history, although the price remains below the peaks reached in late 2025.

Cathie Wood, CEO of ARK Invest, reaffirmed her long-term Bitcoin bull case, saying the cryptocurrency is preparing for another big run and could ultimately reach $1.5 million. In remarks shared on X by The Bitcoin Historian, Wood cited rising institutional adoption, the fixed 21 million supply cap, and Bitcoin’s emerging status as a digital store of value as core drivers. She also pointed to potential US government direct purchases of Bitcoin as a possible catalyst, and described the current drawdown as the shallowest four-year-cycle bear market on record.

COINOTAG’s proprietary 42-indicator composite S/R scoring engine rates immediate resistance at $78,568.57 at 74/100, a strong level built on flip S→R, HVN, LVN and Fibo 0.886, with further supply at $80,844.90 (62/100, Fibo 1.000 and R1). On the downside, support at $76,557.50 scores 65/100, supported by Fibo 0.786, Pivot Point and MACD Cross. Derivatives data shows funding at 0.0059%, open interest of $14.74 billion and a long/short ratio of 1.13, while the Fear & Greed Index sits at 71 (Greed). A break above the $78.5K resistance on strong volume could open a run toward $80.8K, while a daily close below $76.5K would suggest the recent breakout needs a deeper reset.