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Quantitative Finance · Glosario

¿Qué es Fidelity level?

Definition 16.4 Research Craft: Predictors, Backtests, Measurement, Portfolios · Capítulo 16 — Vectorised Backtests

The fidelity level of a backtest is how much of the trading process it simulates. This book uses four: level 1, the vectorised backtest on bar returns with costs as functions of turnover; level 2, the event-driven backtest on bars, with orders, fills and a simulated clock (chapter 17); level 3, the replay of order-book messages with queue positions and latency (chapter 18); level 4, live trading at small size or paper trading on live data (chapters 19 and 21).

The four fidelity levels of the firm’s backtests. A research idea moves right only if it survives on the left.
Figure 16.1. The four fidelity levels of the firm’s backtests. A research idea moves right only if it survives on the left.
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