Bitcoin Advances 6.2% in September to Reach $87,000 on Strong ETF Inflows

Bitcoin gained 6.2% in September to touch an eight-month high near $87,000, defying seasonal headwinds that historically saw negative returns averaging 2.4%. The rally was driven by robust spot demand, with U.S. spot Bitcoin ETFs capturing roughly $2.6 billion in net monthly inflows, following $3.5 billion in August and turning year-to-date net flows positive. Derivatives leverage cooled after three liquidations exceeding $500 million each, quickly normalizing funding rates. Analysts and asset manager 21Shares point to critical support at $81,000 and potential resistance near $88,000 entering the fourth quarter.