In the vast majority of cases, scalping and arbitrage strategies happen to be more profitable than any other strategy. As a consequence, brokers whose business model is based on the B-book and on making money off deposits lost by traders – such brokers are not interested in clients who use scalping and arbitrage methodologies in their trading. For that reason, brokers can resort to certain wily techniques that prevent traders from making money. They might, for example, require the trader to keep an order open for more than 5-10 seconds, sometimes even for minutes. Or they might use add-ons that allow the broker to increase the execution time of an order.
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