What is Foreign exchange aggregator?

A foreign exchange aggregator or FX Aggregator is a class of systems used in Forex trading to aggregate the liquidity from several liquidity providers.

Aggregators usually provide two main functions; they allow FX traders to compare price from different liquidity venues such as banks-global market makers or ECNs like Currenex, FXall or Hotspot FX and to have a consolidated view of the market. They allow traders to trade with many participants using a single API or a single trading terminal. Some of the systems support order sweeping , other systems route the whole order to a single liquidity provider who is chosen by an order routing algorithm embedded into an aggregator.