OneChicago, LLC filed a notice with the Securities and Exchange Commission to withdraw as a national securities exchange for trading security futures products, effective September 30, 2020. They had decided to close the exchange after a strategic review, with the last trading day on September 18, 2020. The Securities and Exchange Commission (SEC) granted the withdrawal request, requiring OneChicago to maintain and produce certain records for five years. The Commodity Futures Trading Commission also vacated OneChicago's designation as a contract market, effective December 21, 2020.
Simple Explanation
OneChicago, LLC told the government it wanted to stop being a place where special kinds of bets on stock futures are traded. The government agreed but asked them to keep all important papers for five years.