How to Build a Trading Constitution: The Framework Serious Traders Use

If you've read What Is a Trading Constitution? you know what the artifact is and why it matters. This is the companion piece: a practical step-by-step framework for building one in 60–90 minutes.

The goal isn't perfection. The goal is specificity. Most trading plans fail because they read like aspirations (“I will manage risk carefully”). A Constitution reads like a contract (“Risk per trade is 0.5% of equity; the daily loss limit is -3R; trading halts when hit”). The structure forces the specificity.

Open a blank doc. Work through the six sections below. By the end you'll have a draft you can encode into TradeRegimen or any other enforcement system.

Clause 1 — Risk Per Trade

Start with the base risk-per-trade percentage, because every other clause inherits its units from this one.

The decision

• 0.25%— appropriate for new traders, or experienced traders trading larger size than they've historically been comfortable with. Small enough that a string of losses doesn't damage psychological capital.
• 0.5% — the default for most experienced discretionary momentum and swing traders with documented positive expectancy.
• 1.0% — for advanced traders with a documented edge, a long-running track record, and the emotional capacity to take a string of -1R losses without flinching.
• >1.0%— gambling. Don't do this regardless of how confident you are about any individual trade.

The worked example

$50,000 account, 0.5% risk-per-trade = $250 maximum risk per single trade.

Clause 1: Maximum risk per trade is 0.5% of total account equity. Risk = (entry price - stop price) × shares.

Clause 2 — Daily and Weekly Loss Limits

This is the most important clause. It prevents the single most expensive failure mode in retail trading: revenge-trading after a losing day.

The decision

Express limits in R, not dollars. R-based limits scale with your account automatically.

• Daily limit: -2R to -3R. Three losing trades in a day is normal; four is a sign the regime or your reads are off — stop trading and review.
• Weekly limit: -6R to -8R. Hitting the weekly limit means you should stop trading for the week regardless of how Wednesday started.
• Optional monthly limit: -15R to -20R. Triggers a full pause and a forced full review of your trade journal before resuming.

The worked example

At 0.5% risk-per-trade and -3R daily limit: 3 × $250 = $750 daily loss before trading halts. Weekly -8R = $2,000.

Clause 2: Stop new trades for the day at -3R cumulative. Stop new trades for the week at -8R cumulative. No exceptions.

Clause 3 — Correlation Caps

Eight different positions can be one trade if they're all in the same sector or all leveraged ETFs on the same underlying. Correlation caps prevent the “diversification illusion” failure mode.

The decision

• Per-sector cap: Max 3–5% of equity in any one sector (semis, biotech, energy, etc.). Below 3% the cap is too restrictive in concentrated bull markets; above 5% one sector roll-over can take your account down meaningfully.
• Per-theme cap: Max 4% in any one thematic play (AI, GLP-1s, crypto-equity proxies). Themes are correlated across sectors and need their own cap.
• Leveraged ETF cap: Max 2% total exposure to all 2× and 3× ETFs combined. Leverage amplifies both gains and the cost of correlation.
• Total long exposure cap: Max 100% of equity on margin-free accounts; max 150% on margin accounts.

Clause 3: Max sector exposure 4%. Max theme exposure 4%. Max leveraged-ETF exposure 2%. Max total long exposure 100%.

Clause 4 — Regime-Adjusted Sizing

The same setup has different base rates in different regimes. Constant sizing is implicitly over-betting bad environments. Multipliers fix this.

The decision

Most institutional Constitutions use a multiplier on the base risk-per-trade:

• Bullish regime: 1.0× (full size).
• Neutral regime: 0.5× (half size, focus on A+ setups only).
• Bearish regime: 0.25× or 0× (quarter size or no new positions).

See Market Regime Analysisfor how to classify regime objectively. TradeRegimen's 10-point Zweig composite does this automatically.

Clause 4: Effective risk per trade = base risk × regime multiplier. Bullish 1.0×, Neutral 0.5×, Bearish 0.25×.

Clause 5 — Scale-Out Mechanics

Asymmetric R distribution is the source of your edge. A handful of +10R or +20R winners pay for everything. If you systematically clip winners at +1R or +2R out of anxiety, you destroy the right tail.

The decision

The canonical scale-out framework for momentum and swing traders:

• +2R: Sell 25%. Move stop to breakeven.
• +4R or 8 ATRs above pivot: Sell another 25%. Trail stop to the 10-day MA.
• Runner (remaining 50%):Trail under each new pivot OR the 21-day MA, whichever is higher. Don't exit on intuition.

See How to Stop Cutting Winning Trades Early for the structural fix that makes this work under live stress.

Clause 5: Sell 25% at +2R (move stop to breakeven), sell 25% at +4R (trail to 10-day MA), trail remaining 50% under 21-day MA.

Clause 6 — Hard Exit Conditions

Conditions that void the original thesis and require immediate exit regardless of price action. Hard exits prevent “holding and hoping,” the second-largest source of cumulative underperformance after cutting winners.

The decision

At minimum, the following conditions should trigger an exit regardless of the chart:

1. Market regime flips to Bearish (TradeRegimen surfaces this on the dashboard).
2. Stock closes below the 50-day MA on volume > 1.5× average.
3. Distribution-day count on the broader market exceeds 5 in 4 weeks.
4. Original thesis is invalidated — earnings miss after an earnings-catalyst trade, base break after a base-breakout trade, etc.

Clause 6: Exit immediately if (a) regime flips to Bearish, (b) close < 50-DMA on volume > 1.5× avg, (c) distribution-day count > 5 in 4 weeks, or (d) thesis invalidated.

Putting It Together

A complete starter Constitution, assembled from the six clauses above, fits on a single page:

That's the entire Constitution. Six clauses, one page. Specific enough to enforce mechanically, narrow enough to actually remember.

What to Do Next

1. Write your version. Open a doc, copy the six headings, fill in your specific numbers. Don't aim for perfection — aim for specificity.
2. Encode it. Whether in TradeRegimen or another system, get the rules out of the document and into something that can enforce them. A Constitution that lives only in a PDF doesn't enforce anything.
3. Run for 30 days. Trade against the Constitution for a month before changing anything. Record every violation (the system will surface them) and every near-miss.
4. Review the data, not the feelings. At the end of 30 days, look at your journal. Which clauses produced the most violation attempts? Which clauses had no enforcement activity at all (suggesting they're too loose)? Revise the parameters once. Run another 30 days.

Conclusion

Building a Trading Constitution is straightforward. The hard part is treating it as binding once it's written.

The trader who writes a Constitution and overrides it in the first stressful moment hasn't built a Constitution — they've built a document. The trader who writes a Constitution, encodes it into an enforcement system, and lets the system halt the rule-violations they'd otherwise commit is the trader who eventually compounds.

The framework is the easy part. Submitting to the framework is the entire point.