Quantum London Trading EA v1.6.1 Source Code MQ4 is an Expert Advisor (EA) designed for MetaTrader 4 (MT4), primarily focused on trading during the London session of the forex market. The London session is known for its high liquidity and volatility, making it a prime time for traders to capitalize on market movements. The Quantum London Trading EA aims to automate the trading process during this period, using various strategies to capture profitable opportunities.