Confidence is a probability hint, not a promise
The confidence on a swipe card signals how strong the setup is relative to recent history. It’s not a guarantee; it’s a guide to how much you should risk, not whether you should abandon discipline.
How to translate confidence into size
- Set a base risk/unit: e.g., 0.75% of account per trade on normal days.
- Scale inside a band:
- 50–60: 0.5× base
- 61–75: 1.0× base
- 76–85: 1.25× base
- 86–90: 1.5× base
- 90+: Rare. Keep it at 1.5× base, not “all-in.”
- Never exceed your daily/drawdown brakes: If you’re near limits, size down regardless of confidence.
What makes a confidence score rise or fall
- Confluence of signals (structure + momentum + liquidity health).
- Recent hit rate of similar setups.
- Volatility regime and spread quality.
- Time decay (TTL): stale ideas lose edge and confidence.
- Venue reliability: rejects or throttling drag confidence.
- Market microstructure: wide spreads or shallow book reduce usable edge.
How to avoid overbetting
- Cap per-trade risk: Hard ceiling (e.g., 1.5% max) regardless of confidence.
- Cap same-idea stacking: If two cards are correlated, treat them as one position.
- Respect venue/asset limits: Thin books? Even high confidence gets smaller size.
- Honor daily brakes: Confidence never overrides risk stops.
- Adjust for volatility: If ATR doubles, halve size even on high confidence.
- Match RR: If RR < 1.3, keep size on the lower band no matter the score.
Quick read checklist before you swipe
- Does the stop sit outside noise? High confidence with a too-tight stop is fake safety.
- Is the RR acceptable? If target/stop is ~1:1, size small even at high confidence.
- Is liquidity normal? Wide spreads reduce real edge.
- Are you correlated elsewhere? If you’re already long similar beta, downsize.
- Is TTL fresh? A stale high-confidence card is worse than a fresh medium one.
- Is funding sane? High funding eats edge; size down.
How to react to outcomes without tilting
- Hit TP at high confidence: Log it; confirm the model’s calibration. Don’t increase size beyond your band.
- Hit SL at high confidence: That’s data, not betrayal. Stay within the band; revisit structure quality.
- Hit SL at low confidence: Working as intended. Small risk protected you.
- Expire without fill: Good—no fill at bad price. Wait for the next card.
- Slip more than expected: Trade fewer cards during wide-spread windows or reduce band by 0.25×.
Calibration drill (15 minutes, once a week)
- Take last 20 cards. Bucket by confidence decile.
- For each bucket, note TP%, SL%, average RR.
- If a bucket underperforms, cap it to 0.75× base next week.
- If a bucket overperforms with tight stops, check slippage to ensure it’s real edge.
- Adjust band rules; write them down so you don’t improvise mid-week.
Common confidence myths
- “High confidence means bigger stops are okay.” No—stop distance is structure-driven; size absorbs distance.
- “Low confidence = skip all.” Not always; low can be fine with tiny size if RR is strong.
- “Confidence replaces RR.” Never. Bad RR + high confidence is still a bad bet.
- “One big win fixes variance.” Overbetting one card usually breaks the curve.
Mini playbook: news days
- Treat all bands as half-size on major news days.
- Only take cards with RR ≥ 2.0 and stops outside the news wick.
- If spreads blow out, pause until they normalize; confidence scores assume sane microstructure.
Mini playbook: low-vol chop
- Expect more fake breaks; prioritize cards with wider structure stops.
- Keep size at 0.5–1.0× base unless volatility picks up.
- Be comfortable passing more; confidence drops faster when TTL decays in chop.
FAQs
- Can I ignore low confidence if I “feel” it? Feelings aren’t calibration. If you must trade it, trade it small.
- Why not go 3× at 90+? Edge isn’t linear at the tails; capacity and variance explode. Protect longevity.
- Does confidence equal hit rate? It’s related but also factors liquidity, vol, and recency of similar setups.
- Should I stack two high-confidence cards on same asset? Treat them as one idea; split size, don’t double total risk.
- What if confidence drops after I’m in? If structure and RR still hold, stick to plan. Avoid panic exits without signal.
- Do funding/spread changes affect confidence? They should affect your size. High cost = smaller size even if confidence is high.
The takeaway
Confidence should tune your size, not override your rules. Pick a base risk, apply a simple banded scale, and never let a high number talk you into breaking your brakes. That’s how you stay in the game long enough for any edge to matter.
