Approximately $15.9 billion to $16 billion in Bitcoin options are slated to expire on Deribit this Friday, September 25, at 08:00 UTC, representing one of the largest such events in 2026. This expiry accounts for about 37% of Deribit's total outstanding Bitcoin options open interest. The market is predominantly bullish, with call options representing roughly 60% of the open interest, or about $9.6 billion, compared to approximately $6.4 billion in put options. This bullish tilt reflects prior positioning as Bitcoin has rallied above $85,000.
Analysts note that this large-scale expiry could introduce significant volatility. While option expiries themselves don't inherently dictate market direction, the unwinding and readjustment of hedges by market makers and traders can cause short-term price fluctuations. Dealers who were short call options likely bought spot Bitcoin to hedge as the price climbed, and these hedging flows will dissipate post-expiry, potentially leading to a reset in trading ranges and a return to higher volatility. Historically, major quarterly options expiries have coincided with an 18-25% increase in intraday price swings.
Key strike prices attracting significant open interest include $85,000, $95,000, and $100,000 for calls, with maximum pain points for option sellers hovering around $75,000 to $76,000. With Bitcoin trading near $86,300, many call options are already in the money, suggesting that dealers may have bought substantial amounts of Bitcoin to remain hedged. The unwinding of these hedges, along with subsequent economic data releases and CME futures settlements, will determine if the current rally can be sustained, potentially pushing Bitcoin towards the $90,000 mark and beyond if new buyers step in to replace the expiring hedging flows.
