Who is it for?
Users who want to quantify risk before trading Anyone who verifies account and symbol specifications
Risk & Position Sizing
Losing Streak Simulator
Use seeded Monte Carlo simulation to estimate maximum losing-streak percentiles and the probability of reaching N consecutive losses.
FreeNo installationEducational & analytical
Free with a TupTrader account
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The guide and calculation method stay public on this page. Sign-in is only required to open the interactive workspace.
Tool guide
How many consecutive losses are normal for a given win rate?
A positive-win-rate strategy can still experience long losing streaks. Maximum streak length depends on loss probability, trade count and random outcome order.
Logic / formula
Simulated win/loss paths produce a maximum losing streak for each path; empirical percentiles summarize the distribution.
Read the output
Read streak percentiles as a probability distribution, not a guaranteed future sequence.
TT-FT-010 · versioned engine losing-streak@2.0.0 · educational/analytical use; not investment advice.
Full guide, examples, and sources
When should you not rely on it?
Guessed inputs or invalid broker specifications Using it as a profit forecast
Logic, formula and methodology
A positive-win-rate strategy can still experience long losing streaks. Maximum streak length depends on loss probability, trade count and random outcome order. Simulated win/loss paths produce a maximum losing streak for each path; empirical percentiles summarize the distribution.
Seeded Monte Carlo simulation of the maximum consecutive loss run over a fixed trade horizon. Outputs median, 75th, 90th, 95th, and 99th percentiles, threshold probability, maximum observed streak, and a reproducible histogram.
Worked example
Example
45% win rate over 200 trades with a six-loss threshold
Across 200 trades, even a 45% win-rate system can produce meaningful losing streaks; percentiles help plan for adverse sequences.
Across 200 trades, even a 45% win-rate system can produce meaningful losing streaks; percentiles help plan for adverse sequences.
How to read the result
The headline number must be read with assumptions and warnings. Out-of-bound values should be corrected before trading.
If P95 is nine, roughly 95% of simulated paths under this model did not exceed that maximum streak; it is not a hard future limit. Probability ≥ N is useful for testing how common a psychological or risk threshold is in the modeled paths.
What the TupTrader version adds
The value of this version is not cosmetic; the result, assumptions and workflow are connected to the practical capabilities below.
- Histogram
- P50/P75/P90/P95/P99
- Probability of ≥N losses
- Multiple win-rate scenarios
- Risk impact translation
- Trade-horizon selector
- Assumption banner: IID/independence
Turn the result into a workflow
Related tool →Cross-check the result with the broker or platform. Record risk in the entry checklist. Record the actual value in the journal after the trade.
Common mistakes and limitations
- Confusing risk with margin or potential profit
- Ignoring costs and rounding
- Using the wrong unit or currency
- The IID assumption means independent trades and a constant win probability; real markets can cluster, correlate and shift regimes.
Frequently asked questions
Why does the result vary with the same win rate?
Because the random sequence of wins and losses changes; a seed reproduces a particular simulation.
Is P99 the worst possible streak?
No. It is a percentile of the simulated distribution; rarer tail outcomes can still occur.
Why does trade horizon matter?
More trades provide more opportunities for a long streak to occur.
Sources and research method
This guide combines the tool’s versioned specification, the earlier TupTrader educational page and the authoritative sources below. External sources are used for definitions and scientific boundaries, not for signals.
- CME Group — Controlling RiskFixed-percentage risk and the nonlinear relationship between drawdown and recovery.
This tool is for education, scenario analysis and process control. It is not investment advice, a buy/sell signal or a guarantee of future performance.