A stop loss defines the maximum you are willing to lose on a trade. Professional traders treat stops as fixed rules, not suggestions.
Why Stop Losses Are Non-Negotiable
Without stop losses:
- One bad trade can wipe out months of gains
- Emotional decisions replace rational ones
- Small losses become account-destroying losses
The difference between a small loss and a big loss is a stop loss.
Types of Stop Losses
Hard Stop (Price-Based)
A specific price where your order executes automatically.
Pros:
- Removes emotion
- Executes automatically
- Set and forget
Cons:
- Market makers can see your stop
- May get triggered by noise
- No flexibility for judgment
Mental Stop
A price level where you plan to exit, executed manually.
Pros:
- Hidden from market
- Allows judgment flexibility
- Can avoid obvious stop hunts
Cons:
- Requires discipline
- Emotional in the moment
- May not execute if you hesitate
Recommendation: Use hard stops until you have years of experience and proven discipline.
Trailing Stop
A stop that moves with price to lock in profits.
How It Works:
- Initial stop set below entry
- As price rises, stop rises
- Stop moves up, not down
- When price reverses, stop executes
Types of Trailing Stops:
- Fixed dollar/percentage
- Moving average based
- ATR-based
- Swing low based
Where to Place Your Stop Loss
Technical Stop Placement
Place stops at levels where your thesis is invalidated:
Below Support:
- If buying at support, stop goes below that support
- Support break means thesis is wrong
- Give small buffer for noise
Below Moving Average:
- Using 20 MA as entry trigger
- Stop goes below the MA
- MA break invalidates setup
Below Swing Low:
- Recent significant low point
- Break of swing low = trend change
- Most common technical stop
Beyond Pattern:
- Head and shoulders: Stop above right shoulder
- Flag: Stop below flag boundary
- Triangle: Stop beyond opposite trendline
ATR-Based Stops
Use Average True Range to set stops that account for normal volatility:
Formula: Stop = Entry Price - (ATR x Multiplier)
Common Multipliers:
- 1.5x ATR: Tight stop, more frequent triggers
- 2x ATR: Standard, balances protection and room
- 3x ATR: Wide stop, for volatile stocks or longer holds
Example: Entry: $100 ATR(14): $3 Multiplier: 2x Stop: $100 - ($3 x 2) = $94
Percentage-Based Stops
Fixed percentage below entry:
| Stop Percentage | Best For | Risk Level |
|---|---|---|
| 3-5% | Day/short swing | Tight |
| 5-8% | Standard swing | Moderate |
| 8-12% | Position trades | Wide |
| 12%+ | Long-term holds | Very wide |
Warning: Percentage stops ignore market structure. Technical stops are a better fit in most cases.
Stop Loss Placement Examples
Pullback Entry Stop
Setup: Buying pullback to 20 MA in uptrend
Stop Placement Options:
- Below the 20 MA (tight, may get stopped on normal volatility)
- Below recent swing low (standard, respects structure)
- Below 50 MA (wide, for higher conviction trades)
Best Choice: Below recent swing low with small buffer
Breakout Entry Stop
Setup: Buying breakout above resistance
Stop Placement Options:
- Below breakout level (tight, vulnerable to retest)
- Below last swing low before breakout (standard)
- Below consolidation range (wide)
Best Choice: Below last swing low or mid-point of consolidation
Support Bounce Stop
Setup: Buying at horizontal support
Stop Placement:
- Below the support level
- Give 1-3% buffer below support
- Account for wicks vs closes
Example: Support at $50 Stop at $48.50 (3% below support)
Stop Loss Management
Moving Stops to Breakeven
After a trade moves in your favor:
- Move stop to entry price
- This removes financial risk from the trade
- Let profits run
When to Move:
- After 1R profit (risk-reward achieved)
- After a significant technical level is broken
- After pattern target hit
Trailing Your Stop
Methods for trailing:
- Below each new swing low (for uptrends)
- Below moving average (20 or 10 day)
- Fixed ATR distance from highest close
- Percentage below highest price reached
Example, Swing Low Trail: Entry at $50, initial stop $47 Price rises to $55, new swing low at $53 Move stop to $52.50 (below new swing low) Continue raising stop below each higher low
Tightening Stops
Reasons to tighten:
- Near profit target
- Signs of exhaustion (volume, divergence)
- Time stop approaching
- Market conditions weakening
Stop Loss Mistakes to Avoid
Mistake 1: No Stop Loss
Problem: Hoping the trade will recover Solution: Set a stop on each trade. No exceptions.
Mistake 2: Stop Too Tight
Problem: Getting stopped by normal volatility Solution: Use ATR-based stops, give room to breathe
Mistake 3: Stop Too Wide
Problem: Losing too much when wrong Solution: Calculate position size based on stop, or find a tighter stop
Mistake 4: Moving Stop Further Away
Problem: Moving stop lower as the trade goes against you Solution: Move stops in your favor only
Mistake 5: Setting Stop at Obvious Levels
Problem: Stop at exact support where everyone else places theirs Solution: Give buffer beyond obvious levels
Mistake 6: Not Honoring Your Stop
Problem: Canceling stop when price approaches Solution: Use hard stops, accept that losing trades are part of the process
Stop Loss Quick Reference
| Entry Type | Recommended Stop | Notes |
|---|---|---|
| Pullback to MA | Below swing low | Standard placement |
| Breakout | Below consolidation | Allow for retest |
| Support bounce | Below support level | 1-3% buffer |
| Reversal pattern | Beyond pattern extreme | Width of pattern |
| Momentum entry | 2x ATR | Accounts for volatility |
The R-Multiple Concept
Your stop loss defines your R (risk unit):
- Entry $50, Stop $47 = Risk of $3 = 1R
- Profit of $6 = 2R gain
- Loss of $3 = 1R loss
Think in R-multiples, not dollars. This normalizes results across different position sizes.
Measuring Your Stop Discipline
Setting stops is one thing. Following them and placing them well is another. SwingFolio tracks whether your stops are too tight, too wide, or well-calibrated by comparing stop distances to actual price action across your trade history.
Check it out and see how your stop placement stacks up.
