Bitcoin opened the week at about $83,244 on September 28, 2026, down 1.6% over 24 hours after a quiet weekend that left prices near Friday’s close. CoinGecko data showed a session range of $82,778 to $85,089, a market capitalization near $1.67 trillion, 24-hour volume of about $28.6 billion and circulating supply of roughly 20.09 million coins against the 21 million maximum. The price was about 34% below CoinGecko’s October 6, 2025, all-time high of approximately $126,080. Bitcoin had rebounded through $80,000 and briefly above $87,000 in September before settling into an $83,000-to-$85,000 range. The weekend’s narrow trading followed an $87,000 rejection, with CoinGecko recording closes of $84,417 on September 26 and $84,449 on September 27. Coinbase data in the St. Louis Fed’s FRED series showed closes of $84,337.36 and $84,553.91, respectively. U.S. spot Bitcoin ETFs recorded $134.5 million of net inflows on September 25, including $97.0 million for BlackRock’s IBIT and $49.3 million for Fidelity’s FBTC, partly offset by an $11.8 million outflow from Bitwise’s BITB. The figure was the smallest in a seven-session inflow streak, although the weekly total remained positive. Analysts remain divided over whether October will bring a seasonal rally or a cycle bottom. DeFiTracer and PlanB highlight Bitcoin’s historical October strength, while Benjamin Cowen and Peter Brandt have raised the possibility of a bottoming period. The immediate market test is whether $82,700 to $83,000 holds; current data point to consolidation after a sharp rebound rather than a confirmed trend change.