Systems and method for mediating risks associated with orders in an electronic trading system are provided. A front end component includes a plurality of trading engines that receive orders from traders. A back-end component includes a match system. The system includes a credit control module, which may be located at the back-end (e.g., clearinghouse), front end, a combination thereof, or other location that communicates with the plurality of trading engines. The credit control may monitor aggregate risk parameters for the trading engines and requests credits from trading engines.