Generally speaking, a valid Break of Structure (BOS) in Smart Money Concepts requires a candle body close beyond the reference high or low. A wick-only break is often treated as a sweep or liquidity grab rather than a true structural shift, though it depends heavily on your timeframe and trading plan.
When trading with a prop firm, getting this distinction right is crucial for managing your daily loss limits and avoiding false breakouts during high-impact news. Clean closes help filter out market noise and protect your drawdown.
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