How to Backtest Crash and Boom Strategies

Practical guide: A repeatable test for Boom-family index

These have upward jump events by design, while smaller inter-jump movement can be adverse. “500” or “1000” refers to an average tick interval and never tells you which tick is next. A chart screenshot of one winning pattern is not a backtest. Define conditions that a second person could apply to the same historical data.

Hands-on walkthrough

1. Write the precise Boom-family index entry signal, invalidation, stop, exit and no-trade conditions before examining the test period.
2. Include every qualifying instance, time-stamped entry/exit prices, spreads and commissions, including losing runs.
3. Reserve unseen dates and forward-demo trades to check whether the rule survived outside the development sample.

Worked example or practice scenario

Worked exercise: sample 60 signals. If 24 close at +1.5R and 36 at -1R, gross expectancy is (24×1.5−36)/60 = 0R per trade before costs, so a seemingly decent hit rate is not enough.

What can go wrong

Avoid selecting only clean spikes/breakouts, changing the rule mid-test or omitting the worst drawdown. The synthetic process can make extrapolation unreliable.

Before you act

Keep screenshots and a spreadsheet of every signal, not just a headline win percentage.

Editorial note (14 November 2026): This educational expansion was prepared with AI assistance using the existing TigerEdge guide and publicly available official documentation. It has not been independently tested against every broker account variant. Check live platform specifications before making financial decisions.