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English
$
USD
I will backtest your trading strategy in python with out of sample testing
Data Driven Trading Strategy Analysis
I specialize in Python, data analysis, and quantitative research. I help traders evaluate whether their backtest results hold up through out of sample testing, walk forward validation, sensitivity ana...
About this Gig
Send me your entry and exit rules. I'll code them in Python and backtest them properly, then tell you what the evidence actually supports.
Every order includes:
- Your rules implemented and backtested on daily historical data
- Walk-forward testing with an embargo between train and test periods, so results aren't contaminated by data the strategy already saw
- In-sample and out-of-sample results reported separately
- Cost stress at 1x, 2x and 3x assumed transaction costs
- Sensitivity checks: every parameter moved +/-10%, fills at the close instead of the next open, signals delayed a full bar
- A plain-English verdict with the specific reason behind it, and what would change it
I'll tell you when a strategy doesn't hold up, and most don't. If you want a report that confirms what you already believe, I'm not the right seller.
A sample report is in the gallery. Its verdict is NOT ESTABLISHED, with the reasons shown.
I don't design strategies and I don't sell signals, indicators or ready-made systems. I test the rules you send me.
Data analysis only. I am not a financial adviser. I recommend no security, no trade and no broker, and I make no claim about future performance.
Platform:
Custom
Development technology:
Python
FAQ
Will you tell me if my strategy is good?
I'll tell you what the out-of-sample evidence supports. Often that's "not enough data to say yet" or "this doesn't survive realistic costs." That's the honest answer, and it's what you're paying for.
Do you give trading or investment advice?
No. I analyse the rules you send me and report results. I recommend no security, no trade and no broker, and I make no claim about future performance.
Will you sell me a profitable strategy?
No. I don't sell strategies, signals or indicators, and I don't design a strategy for you. I test the rules you already have.
What data do you use?
Daily historical bars for liquid US-listed instruments.
Do you use AI to produce the report?
The numbers come from a deterministic backtesting engine I built and run — same inputs, same output, every time. I write the verdict and I'm accountable for it. If you'd rather I avoid AI tools anywhere in the work, say so before you order and I'll confirm.
What if my rules are complicated?
Message me first with a short description and I'll tell you honestly whether I can test them.
