Interpreting Trade P&L and Fees in Simulated Trading

Summary

This brief forum exchange addresses a discrepancy between the displayed profit or loss for a simulated stock trade and the trader's expectation that both entry and exit fees should be included. The example concerns a purchase and later automatic sale, prompting concern that the reported loss may omit the selling commission and that backtest returns could therefore be overstated.

The reply distinguishes the result shown for an individual closed trade from account-level performance reporting: the per-trade profit and loss figure does not include fees, while the simulated equity curve and performance metrics do. This distinction matters when reconciling trade records with aggregate results. The post gives no detailed fee formula, platform settings, or independent verification, so it does not establish how every report or backtest handles costs. Traders should identify which reporting field they are reading before using it to assess net performance.

Key ideas

• The platform reply says an individual closed-trade P&L figure excludes fees.
• The simulated equity curve and performance metrics are said to include fees.
• Trade-level figures and aggregate performance can therefore differ in their treatment of costs.
• The post does not provide a fee calculation or verify all platform reporting settings.

Tags

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