The largest BTC block option today is: a certain boss sold a call option of 125000 yuan at the end of the year and a put option of 50000 yuan, totaling 450 BTC, earning a premium of 1.7 million US dollars. It is estimated that he holds a large amount of BTC spot and sells options to earn profits. The profit range for maturity is between 45000 and 138000 yuan; As long as BTC is in the range of 50000 to 125000 at the end of the year, you can earn a profit of 21.6 BTC. A very high winning rate and a very stable strategy.