Polymarket reportedly buys exchange to return to U.S. [https://www.thestreet.com/.image/t_share/MjE2NDcyODQ1OTc3Mzk2NzU1/gettyimages-2221682966.jpg] Polymarket reportedly buys exchange to return to U.S. Polymarket is reportedly acquiring QCX, a derivatives exchange. [https://www.thestreet.com/crypto/markets/polymarket-reportedly-buys-exchange-to-return-to-u-s]