1
Structural stop
Placed beyond the level whose break invalidates the setup.
Lesson · Trading Risk Management
Stop-Loss and Structural Invalidation
Place the stop where the trade thesis becomes invalid, then size the position to make that structural distance affordable.
Core concepts
What to understand
Keep the process direct: define the risk, calculate it, and enforce the limit.
2
Noise risk
A stop inside normal price movement may exit while the thesis remains valid.
3
Size adjustment
A wider valid stop requires a smaller position, not a forced tighter stop.
Interactive lab
Change the risk conditions
Adjust the controls and read the market behavior and account impact after each change.
Stop-Loss and Structural Invalidation Lab
Synthetic educational data · no live market connection
RISK MODEL
Risk process
Apply it in order
Risk calculations should happen before the order is submitted.
Identify the protected level
Use the swing or range boundary that must hold for the thesis.
Allow for normal movement
Place the exit beyond invalidation rather than directly inside common wick activity.
Size from the distance
Calculate quantity only after entry and stop are known.
Knowledge check
Check your understanding
Select one answer for each question. Feedback appears immediately.
1. Where should a structural stop be based?
The chart determines invalidation; account risk determines quantity.
2. A valid stop is wider than expected. What should usually change?
Reduce size so the wider structural stop still fits the risk budget.
3. Price wicks below a minor low but holds the protected low. What happened?
A minor fluctuation can occur without breaking the structural invalidation.
4. Entry 113.80, protected low 108.50, stop placed 0.15 beneath it, dollar risk $500. How many shares?
Distance = 113.80 − 108.35 = $5.45 per share. $500 ÷ $5.45 = 91.7, rounded down to 91 shares, risking 91 × $5.45 = $495.95.
Practical rules
- Define invalidation before calculating quantity.
- Use candle-close or wick rules consistently.
- Include possible slippage beyond the trigger.
Common mistakes
- Placing stops where the loss feels comfortable.
- Moving a stop farther after entry.
- Using the same percentage-distance stop for every chart.
References
Official reading
The labs use simplified synthetic examples. These sources cover the underlying risk and execution concepts.
Investor.gov · Stop, Stop-Limit, and Trailing Stop Orders
A stop trigger does not guarantee the execution price.
CME Group · Position and Risk Management
Overview of predefined stops and risk tolerance.