Trade Copier

A trade copier is software that mirrors trades from one account to one or more others, typically running on the trader's own machine or a virtual server rather than on the broker's infrastructure. It is what lets a single strategy run across several accounts — different brokers, different account sizes, or a personal account alongside a funded one — without placing every order by hand. A copier is not a neutral pipe. Every copied trade carries the latency of the copy plus the receiving broker's own execution, so fills differ from the source, and the difference is worst in exactly the fast conditions a strategy may depend on. Sizing has to be translated between accounts with different balances, leverage and contract specifications, and symbol names rarely match across servers. Before relying on one, compare a period of copied fills against the source account's, and check the receiving broker's terms: copying between your own accounts and copying commercially are treated differently, and some arrangements require disclosure.