Bitcoin has gained about 2.2% in September and is on track for a third consecutive monthly advance, despite the month’s historically weak performance. BTC traded near $80,350 on Sunday after closing around $81,236 on September 19. A roughly $100 million order-book (queued buy and sell orders) cluster near $83,000 represents an immediate resistance point, while Glassnode identifies a broader $83,000-$86,000 supply zone (price area with significant potential selling). About 1.07 million BTC were acquired in that band by long-term holders, with the largest cost-basis concentration near $85,000. Bitcoin has recovered about 40% from its July low near $57,700 after falling near $75,900 when the Senate failed to advance the CLARITY Act on September 15 and the Federal Reserve raised rates by 25 basis points. Since 2013, Bitcoin has declined in eight of 13 Septembers, with an average loss near 2.9%, although every September since 2023 has ended higher. The market’s next clear test is whether price can overcome the $83,000-$86,000 zone and the visible sell-side liquidity above it.