Boxing Day bonanza: $27 billion in bitcoin, ether options set for year-end reset

The expiration involves over 50% of Deribit's total open interest, with a bullish bias indicated by a put-call ratio of 0.38. What to know : The crypto market is preparing for the expiry of $27 billion of bitcoin and ether options on Deribit on Friday. The expiration involves over 50% of Deribit's total open interest, with a bullish bias indicated by call options outnumbering puts by almost 3-to-1. The market's panic has subsided, and the looming expiry is likely to be much orderly than last year, according to Deribit.