How to Set Stop Losses Properly
Learn to place stop losses at logical levels that protect your capital without getting stopped out on normal market noise.
Identify the Invalidation Level
Before entering any trade, ask: 'At what price would my trade thesis be wrong?' This is your logical stop level. For longs, it's below support; for shorts, it's above resistance.
Pro Tip: Your stop should be placed where the pattern or setup you're trading would be invalid.
Use Technical Levels
Place stops below significant support levels, pattern lows, or moving averages - not at arbitrary percentages. For a breakout trade, the stop goes below the breakout level or recent swing low.
Pro Tip: Add a small buffer (0.5-1%) below the technical level to avoid getting stopped by wicks.
Account for Volatility
Volatile stocks need wider stops. Check the Average True Range (ATR) - your stop should be at least 1-1.5 ATR away from entry. A $100 stock with $3 ATR needs a $3-4.50 stop distance minimum.
Pro Tip: If proper stop distance makes position size too small, the setup isn't right for your account.
Avoid Common Trap Zones
Don't place stops at obvious round numbers ($50, $100) or just below obvious support. Market makers and algorithms often hunt these stops. Go slightly beyond where everyone else places theirs.
Pro Tip: Instead of $49.00 stop, use $48.75 or $48.50 to avoid obvious stop clusters.
Adjust Position Size to Stop
Once you set your stop based on technicals, calculate position size based on that distance. Never move your stop closer just to take a larger position - that's how accounts blow up.
Pro Tip: Wide stop = smaller position. Tight stop = larger position. Risk stays constant.
Common Mistakes to Avoid
- ✗Using the same dollar or percentage stop for all trades
- ✗Placing stops at obvious round numbers
- ✗Setting stops too tight and getting stopped on noise
- ✗Moving stops further away to avoid taking a loss
- ✗Not accounting for volatility differences between stocks