US spot Bitcoin exchange-traded funds attracted nearly $1 billion in the latest week, bringing their three-week net inflows to roughly $3.8 billion, according to Cointelegraph. It was the strongest three-week stretch for the products in 2026 and came while Bitcoin traded below $80,000. Bitcoin stood near $79,675 on September 5, 2026, down about 1.3% on the day but up roughly 2.8% over the previous week, according to CoinMarketCap. The Fear and Greed Index was 75, classified as Greed. The divergence between fund flows and price suggests institutions were adding exposure during weakness, while shorter-term spot holders and leveraged traders were selling into that demand. Bitcoin ETFs recorded their strongest month of 2026 in August as BTC rose 25%, meaning the September inflows extended an existing trend. The latest three-week total does not establish how flows were distributed across each week, but nearly $1 billion arrived in the latest period, leaving roughly $2.8 billion across the two preceding weeks. ETF flows can reverse quickly in response to macroeconomic headlines, particularly changes in expectations for Federal Reserve rate cuts. The recent move below $80,000 followed a hot jobs report and increased bets on a more hawkish Federal Reserve, but the flow data indicates that at least some institutional buyers viewed the level as an entry point. The figures measure demand through early September rather than provide a forecast. For Bitcoin holders, the data shows that ETF demand and the spot market can diverge for weeks. For people spending Bitcoin, volatility around a round-number level can change the dollar value of a card top-up between loading and spending. Cards that allow direct spending of stablecoins avoid that timing risk, while a cashback card paid in BTC leaves rewards exposed to the same price movements.