AN ECN can also turn you off matching with bank streamers if they get a complaint of predatory behaviour and consider that its likely they are...
It depends on HOW unidentifiable you are. Larger customers trading with banks are directly identifyable in some cases, and sometime hidden by PB...
Personal experience here as a model trader/ECN connectivity guy at both a hedge fund AND bank, including Hotspot, Currenex, Lava, SpotAi,...
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