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Choose a backtesting platform
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Define your trading strategy
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Select and prepare your data
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Run and evaluate your backtest
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Validate and refine your backtest
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Here’s what else to consider
Backtesting is a method of evaluating a trading strategy by applying it to historical data and measuring its performance. It can help you identify potential strengths and weaknesses of your system, optimize its parameters, and estimate its risk and return. However, backtesting is not a guarantee of future success, and it can be prone to errors and biases if not done properly. In this article, you will learn how to conduct reliable backtests using technical analysis tools and techniques.
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- Vishnu D R LinkedIn Top Technical Analysis Voice | Options Trader | Investment Banking Consultant
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- Chirag Jain 🎓 Student of Life 🌱 | Passionate Learner 📚 | Equipped with Expertise in Equity Broking, Bullion Exchange…
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1 Choose a backtesting platform
The first step is to choose a backtesting platform that suits your needs and preferences. There are many options available, ranging from simple spreadsheet programs to sophisticated software packages. Some factors to consider are the cost, the data quality and availability, the programming language and skills required, the customization and flexibility, and the reporting and analysis features. You should also test the platform for accuracy and reliability by comparing its results with other sources or methods.
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Selecting the right backtesting platform is a crucial initial step in your trading journey. It's akin to choosing a tool for a complex job. Factors like cost, data quality, and customization must align with your preferences. Proficiency in the platform's programming language and its flexibility are essential considerations. Furthermore, robust reporting and analysis features should facilitate informed decision-making. To ensure precision, verify the platform's accuracy and reliability by cross-referencing its results with alternative sources or methods. This meticulous selection process lays the foundation for effective trading strategies.
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2 Define your trading strategy
The next step is to define your trading strategy clearly and precisely. This includes specifying the entry and exit rules, the position size and risk management, the time frame and market conditions, and the indicators and signals you will use. You should also state the objectives and assumptions of your strategy, such as the expected return, drawdown, win rate, and Sharpe ratio. You should avoid overfitting your strategy to the historical data by using too many parameters, filters, or optimizations.
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3 Select and prepare your data
The third step is to select and prepare your data for backtesting. You should choose a data set that matches your trading style and frequency, and that covers a sufficient period and sample size. You should also ensure that your data is clean, accurate, and consistent, and that it accounts for any adjustments, splits, dividends, commissions, or slippage. You should also perform some exploratory data analysis to understand the characteristics and trends of your data, and to identify any outliers or anomalies.
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4 Run and evaluate your backtest
The fourth step is to run and evaluate your backtest using your platform and strategy. You should monitor the progress and performance of your backtest, and check for any errors or warnings. You should also analyze the results and metrics of your backtest, such as the equity curve, the trade statistics, the drawdowns, the risk-adjusted returns, and the performance ratios. You should also compare your backtest results with your objectives and assumptions, and with other benchmarks or strategies.
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5 Validate and refine your backtest
The final step is to validate and refine your backtest using various methods and techniques. You should test the robustness and reliability of your backtest by performing sensitivity analysis, walk-forward analysis, Monte Carlo simulation, and out-of-sample testing. You should also review and improve your backtest by identifying and correcting any errors or biases, such as data snooping, curve fitting, look-ahead bias, or survivorship bias. You should also optimize your strategy parameters and settings using appropriate methods and criteria.
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6 Here’s what else to consider
This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?
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- Vishnu D R LinkedIn Top Technical Analysis Voice | Options Trader | Investment Banking Consultant
There are two broad ways to perform backtesting - Automated and ManualWhile automated enables one to test large volumes of data and easier to tweak the parameters and test, the manual backtesting enables one to easily add a few assumptions and to fine tune the strategy.Eg: A stock touches its 21 DEMA after X days. Automated will just lead to an analysis and some results. If the same is done manually, at times the price might have just fell short of 0.1% to touch the mean and just for this purpose, the backtest should not fail. Hence, I personally suggest traders to employ manual backtesting to the extent possible or at least till the hypothesis is proven to be right or wrong.
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