Guides / Backtesting

Trade Journaling for Prediction Market Backtests

A backtest that only outputs a final Sharpe ratio throws away the information you need to debug it — a trade journal logs every simulated entry, exit, price, and size, so a bad run can be traced back to a specific fill instead of re-run from scratch with print statements added.

Where the data comes from

Each journaled fill traces back to a real historical price from ProbSights' API — the journal itself is something you build around that data, not a ProbSights feature.

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