The manager of a trading platform does not commit its own capital or trade by matching with its own account on the platforms it manages.
Proprietary trading is a form of trading in which a person, the facilitator, acts as an intermediary between the buyer and the seller involved in the trade, so that there is no exposure to market risk throughout the execution of the trade, both sides are executed simultaneously, and the trade is concluded at a price at which the facilitator does not incur any loss or gain, other than pre-disclosed commissions, fees or compensation.