CME Group’s bitcoin options open interest has contracted dramatically, falling from a peak of roughly $290 million in late November to an estimated $30‑40 million by mid‑June, according to Cryptoquant data.
Options Market Contraction
Put contracts continue to dominate calls on most trading days, a trend that has persisted since July 2025. The bulk of CME’s options now concentrate in the one‑to‑two‑month expiration window, while positions extending four months or beyond have thinned markedly since the autumn season.
Futures Open Interest Landscape
Across exchanges, Binance commands the largest share of bitcoin futures open interest, holding 131.97 K BTC equivalent to about $8.42 billion and representing 18.22 % of the market, per Coinglass figures. CME follows with 106.03 K BTC, valued near $6.77 billion, securing a 14.64 % share and displaying an open‑interest‑to‑volume ratio of 1.1547.
Gate.io and Bybit each maintain roughly 60 K BTC in open interest, while MEXC lists 71.30 K BTC. Smaller platforms such as Bitget, BingX, and Bitunix complete the ranking, with BingX experiencing the steepest 24‑hour decline—a drop of 18.41 % in open interest.
Overall Market Implications
Aggregate bitcoin open interest in dollar terms has receded from its October peak of over $90 billion to a considerably lower range, signaling a shift in investor risk appetite. The concentration of short‑term bets and the reduction of long‑dated contracts suggest that market participants are tightening exposure ahead of potential price movements in the coming months.