Strategy compare

Skill marketcalls/vectorbt-backtesting-skills/.claude/skills/strategy-compare

Agentic coding skills for backtesting trading strategies using VectorBT. Supports Indian, US, and Crypto markets with realistic transaction cost modeling, TA-Lib indicators, QuantStats tearsheets, and 12 ready-made strategy templates.

Install

npx -y skills add marketcalls/vectorbt-backtesting-skills --skill strategy-compare

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What its author says it does

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Compare multiple strategies or directions (long vs short vs both) on the same symbol. Generates side-by-side stats table.

SKILL.md

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Create a strategy comparison script.

Arguments

Parse $ARGUMENTS as: symbol followed by strategy names

$0 = symbol (e.g., SBIN, RELIANCE, NIFTY)
Remaining args = strategies to compare (e.g., ema-crossover rsi donchian)

If only a symbol is given with no strategies, compare: ema-crossover, rsi, donchian, supertrend. If "long-vs-short" is one of the strategies, compare longonly vs shortonly vs both for the first real strategy.

Instructions

Read the vectorbt-expert skill rules for reference patterns
Create backtesting/strategy_comparison/ directory if it doesn't exist (on-demand)
Create a .py file in backtesting/strategy_comparison/ named {symbol}_strategy_comparison.py
The script must:
- Fetch data once via OpenAlgo
- If user provides a DuckDB path, load data directly via duckdb.connect(path, read_only=True). See vectorbt-expert rules/duckdb-data.md.
- If openalgo.ta is not importable (standalone DuckDB), use inline exrem() fallback.
- Use OpenAlgo ta for ALL indicators by default (never VectorBT built-in). Only switch to TA-Lib if the user explicitly says "talib"/"TA-Lib"
- Always use OpenAlgo ta for specialty indicators (Supertrend, Donchian, etc.) - no TA-Lib equivalent exists
- Clean signals with ta.exrem() (always .fillna(False) before exrem)
- Run each strategy on the same data
- Indian delivery fees: fees=0.00111, fixed_fees=20 for delivery equity
- Collect key metrics from each into a side-by-side DataFrame
- Include NIFTY benchmark in the comparison table (via OpenAlgo NSE_INDEX)
- Print Strategy vs Benchmark comparison table: Total Return, Sharpe, Sortino, Max DD, Win Rate, Trades, Profit Factor
- Explain results in plain language - which strategy performed best and why
- Plot overlaid equity curves for all strategies using Plotly (template="plotly_dark")
- Save comparison to CSV
Never use icons/emojis in code or logger output

Example Usage

/strategy-compare RELIANCE ema-crossover rsi donchian /strategy-compare SBIN long-vs-short ema-crossover