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Position size, simulated.

Load a real contract's tick math, set your own win rate and payoff, and watch what stake size does to a bankroll over a few thousand trades. Fees, prop-firm drawdown and daily loss limits are all in the model.

Everything runs in your browser. Nothing is saved and nothing is sent to us.

Heads lands 60.0% of the time.

Last 100 flips

Balance$100,000.00
Bet $

log +1.50% · stake 10.0%

Bet % of bankroll · Kelly 20.0%

Space flip — hold it to ripEnter auto-run

Bankroll over time

$100.0K

no trades yet — flip to begin

Volatility · rolling 20-trade σ

0%
Heads rigging · how often the coin lands heads

Kelly criterion optimal bet

20.0%

Sizing is the easy half. Placing it is the other one.

Shifu takes the alert your strategy already fires and places that exact order in every account you trade — NinjaTrader and Tradovate today, Rithmic ready for its first account. One flat plan, no per-account fees.

This simulator is educational software, not financial advice. Every figure it draws is generated from inputs you choose — it is not a track record, not a backtest of any real strategy, and not a prediction. Simulated results have inherent limitations and never reflect the impact of real financial risk. Trading futures carries substantial risk of loss and is not suitable for every investor.