According to @glassnode, the largest BTC options expiry is approaching while spot remains stuck in its recent range, putting positioning and implied volatility under the spotlight for traders. source: @glassnode on X, Dec 19, 2025. @glassnode states that the thread examines options positioning and volatility signals into the event and explains why this expiry could influence subsequent price behavior. source: @glassnode on X, Dec 19, 2025. Key trading watchpoints highlighted include options open interest concentration by strike, implied volatility term structure, and volatility skew ahead of the expiry window to gauge potential post-expiry direction and volatility. source: @glassnode on X, Dec 19, 2025.