Risk Manager EA v1.0 Source Code MQ4 for MetaTrader 4 (MT4) is likely an Expert Advisor (EA) designed to help traders manage risk effectively while using other EAs or manual trading strategies. It’s crucial to control risk in trading, and a Risk Manager EA is typically built to automate and optimize this process. The exact details of this EA may vary depending on its creator, but I will explain the general functions and how a Risk Manager EA usually works.