Cboe Options Exchange Temporarily Shifts to Fully Electronic Trading – SEC Enables Immediate Effectiveness of Proposed Rule Change to Facilitate Continued Operations in Light of Temporary Suspension of Cboe Physical Trading Floor

The U.S. Securities and Exchange Commission noticed for immediate effectiveness a proposed rule filing submitted by Cboe Exchange, Inc. to facilitate the continued operation of Cboe's options exchange in light of Cboe's decision to temporarily suspend open outcry trading on its Chicago trading floor. Cboe announced that it will temporarily close its options trading floor effective Monday, March 16, as a precautionary measure to prevent the potential spread of COVID-19. The Cboe rule filing modifies three trading rules with respect to Cboe's exclusively listed index options to more fully replicate in an electronic trading environment the trading that occurs on the Cboe's physical trading floor.