Most forex (FX) analysis works from what everyone can already see: the macro headline, the consensus direction, the same technical indicators. What actually moves an intraday chart usually sits elsewhere, in the way option barriers force dealers to hedge, in positioning that has become one-sided, in the levels institutional desks pay attention to. That layer is the subject of the session, and retail traders are rarely shown it. Reading it takes two things. The first is information that is hard to source: positioning data, sentiment, option activity, bank views, collected and normalized every morning by an automated pipeline. The second is a documented set of more than 15 recurring market behaviours, drawn from 20 years on trading desks, written down and fed to the model. The session illustrates this with case studies, examined after the fact. This is educational content on how the FX market functions, and we do not issue trade recommendations or investment advice. Mathieu Burbau is the Founder and Managing Director of Satelys Ltd., a firm specializing in the design and implementation of systematic trading strategies in the foreign exchange market. As an FX specialist, he has been actively involved in financial markets since 2001, trading for his own account and on behalf of private and professional investors since 2006. In 2010, he gained industry recognition by achieving astounding trading results in a major international FX trading competition. In 2014, he relocated to London, the world's leading hub for FX, where he advises institutional partners and oversees trading operations from the firm's dedicated trading desk. Over the years, he has developed deep expertise in market microstructure, order flow, and crowd behavior. His analytical work has included early public scrutiny of major policy-driven market distortions. His reputation is founded on consistent, real-market performance across a wide range of conditions, both during prolonged low-volatility environments such as 2014 and 2019, and during periods of extreme market stress including 2008 and 2020, offering genuine diversification relative to traditional equity exposure.