Diagnosing Oversized Order Quantities Behind Backtest Errors
Summary
This brief forum exchange concerns a backtest error described as an integer value too large to convert to a floating-point number. A respondent suggests that the strategy is submitting an excessively large order quantity and advises checking the order size. The exchange therefore offers a simple troubleshooting lead: inspect position sizing or quantity calculations when a backtest fails with a numeric overflow-like error.
The discussion does not include the error trace, code, instrument, sizing logic, or a confirmed fix, so the diagnosis remains a suggestion rather than a demonstrated cause. It contains no broader backtesting method or performance analysis. A user facing a similar failure would need to inspect how quantities are calculated and passed into orders, then verify the actual values near the error. The thread’s practical value is narrow but concrete.
Key ideas
- A forum reply links the reported conversion error to potentially excessive order quantities.
- Checking the strategy’s order size is suggested as an initial troubleshooting step.
- The thread provides no code or error details confirming that oversized orders caused the problem.
- Users need to inspect quantity calculations and values around the failing order.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.