Stop placement
Put the stop where the idea is wrong: beyond structure, outside the noise. · 8 min
Decide first
A stop answers one question: at what price is the idea wrong? Two methods answer it, and good plans use both.
- By structure. The trade depends on a swing low (for a long) or a swing high (for a short) holding. The stop goes just beyond it, with a small buffer, so a retest of the swing does not take you out.
- By volatility. The stop goes k ATRs from the entry. ATR is the typical size of a candle, so a stop closer than about one ATR sits inside ordinary noise.
When the structural stop is less than one ATR away, the swing is too close to be meaningful: noise alone can reach it. When it is more than three or four ATRs away, the trade is a long way from being proved wrong, and the position will have to be small. Either way the stop decides the size, never the other way round.
Plan this chart
Simulated data · not real prices- Entry
- Market order at 105.92
- Risk per unit
- 1.07 (1.73 ATR)
- Reward to risk
- 2.00R
- Break-even win rate
- 33.3%
- Size at 1% of $25,000
- 233 units, $249 at risk
Fills at the next open, plus one tick of slippage.
Coach
- Note: The target lies beyond the resistance at 106.62, which price has to break first. A target just before it is reached more often.
Worked example: the chart above
- Last close 105.92; ATR(14) 0.62.
- Last swing low 104.91. Buffer 0.1 × ATR = 0.06, so the structural stop is 104.85.
- Structural risk: 1.07, or 1.73 ATR.
- ATR stop at 2 ATR: 105.92 − 2 × 0.62 = 104.68, a risk of 1.24.
- For a $250 budget the sizes are 233 and 202 units: same money at risk, different stops.
Common mistake: the stop inside the pattern
A stop one tick under the last candle feels tight and safe. It is neither: it sits inside the pullback, where price can wander without breaking anything, so it is hit by noise more often and the losses add up. Put the stop where the idea is wrong, then size down to fit it.
Check yourself
- Your stop was 0.8 away and sized for a $250 loss. You "give it room" and move it to 1.2 without changing the size. What do you now risk?
- The swing low your long depends on is 70.18; ATR is 1.48. With a buffer of a tenth of an ATR, where is the structural stop?
- Long at 133.93. ATR(14) is 1.98. Where is a 1.5-ATR stop?
- ATR(14) is 0.91. Your stop is 1.46 from the entry. How does the coach read it?
Closing round
Buy pullbacks with the stop beyond the swing low. For every trade, write down its distance in ATR before you enter.
Play the round in the simulator →The simulator's markets are generated, not real prices; the round practises the arithmetic, it does not predict anything.
Further reading: Tharp, Trade Your Way to Financial Freedom. The lesson teaches the idea in its own words and exercises.