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BACKTESTING · FIXED-RISK SIZING

Fixed-Risk Position Sizing Backtest in Crypto: Fees, Slippage and Break-Even Costs

Backtesting the same entries with fixed-risk sizing instead of fixed size changes equity curves, drawdowns and how costs bite.

By ChartsPod Editorial Team · Reviewed by ChartsPod Research
Published · Updated · 5 min read

Short answer

Fixed-risk sizing sets each trade's size so that a stop-out loses a fixed fraction of equity. In a backtest, it changes results compared with fixed position size: tight-stop trades get larger positions (more fees per trade), wide-stop trades smaller. Include costs in the stop distance when sizing, cap notional to avoid absurd sizes on very tight stops, and compare drawdown and net return with fixed-size sizing on identical entries.

Break-even cost

ItemValue (illustrative)
Trades180
Gross avg per trade+0.40%
Fees (2 × 0.05%)−0.10%
Slippage (2 × 0.03%)−0.06%
Net avg per trade+0.24%
Break-even round-trip cost0.40%
Fixed-Risk Sizing: edge vs cost per trade (%)Fixed-Risk Sizing: edge vs cost per trade (%): Gross edge 0.40 %; Fees 0.10 %; Fees + slippage 0.16 %.FIXED-RISK SIZING: EDGE VS COST PER TRADE (%)Gross edge0.40 %Fees0.10 %Fees + slippage0.16 %
Edge per trade versus cost per trade. Original ChartsPod editorial graphic.

Same entries, two sizing rules

SizingNet returnMax drawdownFees paid (illustrative)
Fixed size+18%−14%$2,100
1% fixed risk+24%−11%$3,400
1% risk, notional cap+22%−10%$2,800
Illustrative fees paid ($)Illustrative fees paid ($): Fixed size 2,100 $; Fixed risk 3,400 $; Risk + cap 2,800 $.ILLUSTRATIVE FEES PAID ($)Fixed size$2,100Fixed risk$3,400Risk + cap$2,800
Tight stops inflate notional and fees. Original ChartsPod editorial graphic.

Conclusion

Related: Stop-Distance Position Sizing in Crypto: When the Common Rule Produces a Misleading Result, Fixed-Percent Account Risk in Crypto: When the Common Rule Produces a Misleading Result.

Backtest the fixed-risk sizing rule with costs in ChartsPod.

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Include costs in the stop distance when sizing, cap notional to avoid absurd sizes on very tight stops, and compare drawdown and net return with fixed-size sizing on identical entries.

Check Fixed-Risk Position Sizing Backtest in Crypto against a live market before relying on it.

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Questions readers ask

Does sizing change backtest results?

Yes: returns, drawdown and fees.

Why cap notional?

Very tight stops create huge sizes.

Should costs be in sizing?

Yes, in the stop distance.

Sources and methodology

Backtest cost logic follows TradingView's Pine Script strategy documentation; indicator definitions are standard. All performance numbers are illustrative examples of the method, not results of real tests.

  1. TradingView Pine Script: Strategies — simulated fills and assumptions.
  2. TradingView Pine Script: Repainting — live vs historical calculation.
  3. ChartsPod documentation — guides for order flow, derivatives, alerts, backtests, journal and workspaces.

This article explains research tools and workflows. It is not financial advice, does not recommend buying or selling any asset and does not predict prices. Crypto derivatives carry a risk of rapid and total loss of margin.

CHARTSPOD EDITORIAL EDITION · RESEARCH AND EDUCATION ONLY · NOT FINANCIAL ADVICE.