Martingale: What is it and how does it work? In this post, I talk about the strategy, it's strengths, risks and how it's best used in the real world. Find out what is the Martingale system – a strategy where traders double their position size after a loss, hoping to cover it with an even bigger profit. What is the Martingale System? extrastarscasino.reviewial-spread-betting.c Some traders and investors mistakenly.