Grid Trading with Martingale and Anti-Martingale Position Sizing

Summary

This grid strategy establishes a step size around a baseline that updates when price moves far enough. A rising baseline opens a long with a take-profit at the upper grid level and a stop at the lower one; a falling baseline opens a short with the levels reversed. Position size can remain fixed, grow by a multiplier after losses in martingale mode, or grow after wins in anti-martingale mode. The grid step controls how large a price move must be before the baseline changes and another directional trade can occur.

The accompanying discussion is mainly a warning about progressive sizing. Although increasing size after losses may appear to recover a losing sequence, repeated losses, costs, and slippage can make the approach dangerous in live markets. It explains that the multiplier controls the size increase and that a value of one leaves sizing constant. The document offers no empirical performance results or risk limits for account drawdown, leverage, or maximum position size, so the script should be understood as an illustration of mechanics and risks rather than evidence of a viable system.

Key ideas

• The baseline moves in grid-sized steps and determines whether the next position is long or short.
• Each direction uses adjacent grid levels for its stop and take-profit orders.
• Martingale sizing increases position size after losses, while anti-martingale sizing increases it after wins.
• The grid step affects how much price movement is needed to trigger a change in direction.
• Loss sequences, trading costs, and slippage can undermine progressive sizing, and no performance evidence is provided.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.