Why a Trade Simulation Can Buy at the Open and Sell at the Close

Summary

A user reports that BigQuant’s trade simulation showed a purchase at the market open and a sale at the close on the same day, despite having no carried position and expecting the position to be zero. The response explains that this can be normal because the buy and sell actions occur at different times during the day.

The exchange offers reassurance based on long-term live tracking and says the behavior is acceptable when the modules are configured as described, but it does not specify those settings in the excerpt. It gives no detailed account of order scheduling, fill assumptions, or how to verify the resulting position. Treat the reply as a narrow explanation of intraday timing rather than a general validation of the simulator or a trading strategy.

Key ideas

• A simulated buy at the open and sale at the close can occur on the same day even when no position was carried in.
• The reply attributes the behavior to buys and sells being scheduled at different times.
• The excerpt does not describe the configuration needed to reproduce the stated behavior.
• Its reassurance cites live tracking but provides no supporting data or detailed validation steps.

Tags

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