The number most sites hide. What a pattern's 'break-even failure rate' actually means, and how to turn it into position size and expectancy.
6 min read The Pattern Library
38,500+
Bulkowski trade database
80%+
Best bullish patterns
36 / 39
Symmetrical triangle rank
// key takeaways
▸ A pattern's real edge is its break-even rate, not a marketing 'win rate'.
▸ Break-even failure rate = share of trades that fail to move even 5% before reversing.
▸ Edge only exists when rate × average move beats your losses (expectancy).
▸ We show the rate on every alert so you size to the odds.
What break-even rate means
Thomas Bulkowski measured tens of thousands of patterns and reported a 'break-even failure rate' — the percentage of occurrences that failed to move even 5% in the expected direction before reversing. A 54% break-even failure rate means barely half of those patterns delivered a meaningful move.
That is a very different number from the glossy 'win rates' many tools advertise. It is honest, and it is the number that should drive your decisions.
Turning it into expectancy
Edge is not win rate alone — it is win rate combined with how much you win versus lose. Expectancy = (win% × average win) − (loss% × average loss). A pattern that only completes 55% of the time can still be highly profitable if its average winner is several times its average loser.
How we use it
TradrQuant surfaces each pattern's measured completion rate on every detection, so you can size smaller on marginal setups and lean in on the high-rate ones — instead of treating every alert as equal.
// common mistakes
✕ Chasing patterns with high names but poor break-even rates (e.g. symmetrical triangles).
✕ Confusing 'breaks in my direction' with 'reaches a profitable target'.
✕ Sizing every trade the same regardless of the pattern's odds.
Frequently asked
See it live in the engine
TradrQuant scans 800+ markets for these structures 24/7 — free on Telegram.
Educational content only — not financial advice. Pattern statistics reference Thomas Bulkowski (thepatternsite.com) and published technical-analysis literature.
