Nearly $600 million in notional bitcoin put options is concentrated at the $20,000 strike ahead of Deribit's quarterly expiry. According to NS3.AI, the overall options market still leans slightly bullish, with a put-call ratio of 0.63. This indicates that traders are favoring call options over put options, suggesting optimism about bitcoin's future price movements. The concentration of put options at the $20,000 strike reflects a significant level of interest and potential hedging activity among investors. As the expiry approaches, market participants are closely monitoring these positions to gauge potential impacts on bitcoin's price dynamics.