Place your stop loss at a level that invalidates your reason for entering the trade. The best locations are typically beyond key technical levels, such as just below a major support (for long positions) or just above a resistance (for short positions), to give the trade breathing room.
The most effective stop-loss strategies rely on market structure and volatility rather than arbitrary numbers.
For Buy (Long) Trades: Place your stop loss just below a recent swing low or established support zone. If the price breaks this level, it signals a trend reversal.
For Sell (Short) Trades: Place your stop loss just above a recent swing high or resistance zone.