US spot Bitcoin ETFs recorded $6.34 billion in net inflows during the third quarter of 2026, reversing roughly $5 billion in outflows from the prior quarter as Bitcoin’s price climbed 42.71% in the same period.
The inflow surge marked Bitcoin’s strongest quarterly gain since Q4 2024 and its best third-quarter performance since 2017, according to data from SoSoValue and CoinGlass.
Monthly Breakdown
Bitcoin ETF inflows arrived unevenly across the three-month span. July saw $172 million flow into the products, followed by a sharp increase to $3.52 billion in August. September recorded $2.65 billion in inflows, a 25% decline from August but still substantial.
The month ended with volatility. A nine-day inflow streak brought in $3.1 billion before Wednesday’s session reversed course with $149 million in net outflows. The exact date of that Wednesday was not specified in available data.
Broader ETF Market
Bitcoin ETFs were not alone in attracting capital. US spot Ether ETFs drew $3.05 billion during Q3, reversing $714 million in net outflows recorded in Q2. Ether’s price climbed 71% in the quarter.
Smaller altcoin ETF products also recorded inflows in September. XRP ETFs attracted $308 million in Q3, bringing cumulative net inflows to $1.79 billion. Solana ETFs saw $272 million flow in during September, while Zcash ETFs recorded $246 million in the same month.
