08/26/2026
A trading rule can sound like a good idea and still make the system worse.
I recently tested a couple of simple “what-if” scenarios on our V Reversal trading system using TradeStation EasyLanguage.
One example:
What if we do **not** allow a second trade in the same direction as the first trade of the day?
The base strategy produced approximately:
• $254,905 net profit
• ~$24K max drawdown
• ~$130 average trade
The variation produced approximately:
• ~$219K net profit
• ~$28K max drawdown
• ~$130 average trade
So the extra rule sounded reasonable, but the historical results were actually worse.
That is one of the biggest advantages of systematic trading research:
**You don’t have to guess. You can test it.**
I walk through the logic, the equity curves, and the EasyLanguage code in the full blog post:
https://capstonetradingsystems.com/blogs/trading-systems-market-update/backtesting-v-reversal-what-if-scenarios-with-open-code