A Bitcoin put option with a strike price of $80,000 has emerged as the most traded option on Deribit, with open interest surpassing $2 billion. This development marks a shift in trading preferences, as the $85,000 put option follows closely with $1.97 billion in open interest. Meanwhile, the $140,000 call option, once a favorite, now holds $1.56 billion in open interest, indicating a change in market sentiment.