CoinVoice recently learned that according to Coinglass data, the total open interest of Bitcoin futures contracts on the entire network is 526,690 BTC (about 33.84 billion US dollars). Among them:

CME Bitcoin contract open interest is 157,110 BTC (about 10.08 billion US dollars), ranking first; Binance Bitcoin contract open interest is 117,850 BTC (about 7.57 billion US dollars), ranking second. [Original link]