Bitcoin Options Market Shows Bullish Bias with $3.94B OI and Dominant Call Volume

Bitcoin options markets are showing a strong upward bias in both medium-term positioning and short-term trading flows, with more bets on further price increases than defensive demand. According to CoinGlass data as of 9:40 a.m. KST on September 15, Bitcoin options open interest (OI) totaled $3.94627 billion, up 3.65% from the previous day's $3.807461 billion. Daily trading volume for Bitcoin options was approximately $4.0507 billion.

Open interest composition showed calls at 61.27% and puts at 38.73%. On a 24-hour trading volume basis, calls accounted for 61.23% and puts for 38.77%. The dominance of call options in both open interest and trading volume suggests medium-term positioning is increasingly tilted toward upward price movement, while short-term flows also reflect expectations of rising prices.

The top contracts by open interest were: $70,000 call (September 25, Deribit), $85,000 call (September 25, Deribit), and $70,000 put (September 25, Deribit). By 24-hour trading volume, the top contracts were: $85,000 call (September 25, Deribit), $90,000 call (September 25, Deribit), and $80,000 call (September 25, Deribit).