According to Glassnode, Bitcoin futures open interest surged from $36.2 billion on Monday to $38.6 billion today, marking a $2.4 billion increase in just 36 hours. This rise highlights a significant increase in derivative positioning, reaching its highest point since late March. Such a sharp increase in open interest can indicate heightened trading activity and market anticipation, potentially impacting BTC price movements in the short term. Traders should watch for increased volatility as the market digests this substantial influx in futures interest.