Bitcoin extended its October advance, reclaiming $86,000 and reaching $86,913, with an Oct. 2 intraday high of about $87,000 after buyers cleared a sell wall near $85,000. QCP Markets attributed the move to concentrated buying, a new regulatory catalyst and improved technical signals rather than a broad macro shift; cooling U.S. inflation data, expectations of seasonal strength and Strategy’s resumed purchases provided additional support. Glassnode said some sell orders were filled and the rest withdrawn, leaving thinner visible asks near $87,000. CryptoQuant identified contracting Bitcoin Accumulation Trend bands resembling two 2025 episodes that preceded advances, while cautioning that the limited sample is not a reliable forecasting tool. Bitcoin reclaimed cost-basis levels near $73,000, $77,000 and $83,000, but cohorts with average costs near $88,350 and $89,200 may create breakeven selling pressure. Deribit data show about $2.1 billion, $2.4 billion and $1.8 billion of call exposure at the $90,000, $95,000 and $100,000 strikes, respectively, while open interest rose to roughly $56.2 billion from about $52 billion. QCP cited support at $82,500 and resistance at $87,400, and Trader Doctor Profit said he was building a large short through orders between $86,500 and $89,500.