Bitcoin is on track to post its strongest September since 2012, extending a late-month recovery that has pulled the cryptocurrency above $87,000 for the first time since January. The asset has gained roughly 10.1% since the start of September, according to historical monthly-return data, breaking a long-standing seasonal pattern in which September was one of its weakest months. This year's advance is approaching the roughly 13.1% September gain seen in 2012, though some datasets calculate the 2012 return at 22.1% due to differences in exchange and closing-price methodology.
The rally has intensified over the past week: Bitcoin is up about 13.8% over seven days and 11.6% over 30 days. The move above $87,300 on September 21 was accompanied by nearly $999 million in net inflows into U.S. spot Bitcoin ETFs in a single session, while derivatives markets recorded $648 million in short liquidations within 24 hours. Aggregate open interest across the crypto market rose 7.6% to $156 billion, and global trading volume increased 39% during the same session, indicating that traders added fresh leverage rather than de-risking after the breakout.
On-chain analytics firm Santiment reported that bullish commentary reached its highest level since December 2024, marking a sharp reversal from the capitulation sentiment seen near $60,000 in late June 2026. Santiment cautioned that extreme optimism readings have historically acted as contrarian signals before temporary consolidations. Analyst Michaël van de Poppe argued the cycle may be far from over, comparing the current price structure to the previous cycle's $22,000 level and noting Bitcoin's prior runs from $3,000 to $69,000 and from $16,000 to $125,000. VanEck's Matthew Sigel said Bitcoin's volatility has fallen by about 50% compared with the prior four-year cycle, and sustained accumulation by sovereign wealth funds and registered investment advisors could support a $100,000 target on a 12-month horizon. Traders are watching the weekly close on September 27 to see whether Bitcoin can consolidate above $88,000.
