Why Daily Backtests May Misuse a Tradeability Check

Summary

A forum question examines whether checking an asset's tradeability during a daily backtest is useful when the resulting order may execute on the following day. The concern is that an asset deemed tradable on the signal date could be suspended by the time the order is placed, so the check may not prevent an unfillable order.

The response says the function has little practical value and notes that it appeared in older templates but is now used less often. This is a brief platform-specific exchange rather than a detailed explanation of order timing, suspension handling, or simulator behavior. It provides no experiment or documentation to establish exactly when the check is evaluated or how orders are processed. Researchers should therefore treat the claim as a caution about aligning eligibility checks with execution timing, not as a general rule for every backtesting system.

Key ideas

• The question concerns whether a daily tradeability check remains relevant when orders execute later.
• A stock can become suspended between the signal check and the scheduled trade.
• The reply considers the function of limited value and says older templates used it more often.
• The exchange gives no test or detailed account of platform execution semantics.

Tags

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