CME Group, the world's leading and most diverse derivatives marketplace, announced total open interest reached a record 138,185,824 contracts on May 14, 2019. The previous record was 138,041,727 contracts set on March 15, 2018. Open interest (OI) represents the number of active positions that market participants are holding open without taking delivery or offsetting, a measure that typically increases during times of market uncertainty. Since the end of 2018, overall CME Group OI has grown by 20%, with five of CME Group's six asset classes also seeing rising OI levels, including: Interest Rates, up 26%, Agricultural ... (full story)