A Short-Selling Strategy That Doubles Position Size After Adverse Moves

Summary

This brief example describes a short-selling strategy that opens an initial position, then responds to price movement with either a cover or an added short. It closes the position when the buy price falls below the entry price by a specified profit threshold. If the price rises past a loss threshold, it covers the existing position, opens a short position twice as large, and increments a doubling counter, subject to a maximum gear limit. The loop also reports the current position and waits between checks.

The document presents code as a playful idea for simulation, but supplies no performance results, market, parameter values, or testing methodology. Its central risk is the escalating exposure: repeated adverse moves can increase losses and position size, while the stop conditions and maximum gear depend on user-defined settings. The example therefore illustrates a mechanism rather than establishing a viable trading system.

Key ideas

• The strategy opens an initial short position and tracks its amount and entry price.
• It covers the position after a favorable price move reaches the configured profit threshold.
• After an adverse move, it covers and reopens a short at twice the prior position size, up to a configured limit.
• The document offers the code for simulation and provides no evidence of profitability.

Tags

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