Break of Structure (BOS): A Real GBP/USD Case Study With Full Trade Breakdown
TL;DR:
- A Break of Structure (BOS) confirms trend continuation when price closes beyond a previous swing point
- This case study shows a real GBP/USD bullish BOS at 1.2680 that led to a 95-pip continuation move
- Learn the difference between BOS and CHoCH, and when each signals a tradeable opportunity
- BOS is the foundation of SMC market structure analysis
What Is a Break of Structure (BOS)?
A Break of Structure (BOS) occurs when price closes beyond a previous swing high (in an uptrend) or swing low (in a downtrend), confirming that the current trend is continuing. It is the most fundamental concept in Smart Money Concepts market structure analysis.
Key Takeaways:
- Bullish BOS: Price closes above the previous swing high → trend continues up
- Bearish BOS: Price closes below the previous swing low → trend continues down
- BOS = trend continuation; CHoCH = potential trend reversal
- Always wait for the candle CLOSE beyond the swing point, not just a wick
BOS vs CHoCH: What's the Difference?
| Feature | BOS (Break of Structure) | CHoCH (Change of Character) |
|---------|--------------------------|----------------------------|
| Meaning | Trend continuation | Trend reversal signal |
| In uptrend | Price breaks above previous high | Price breaks below previous low |
| In downtrend | Price breaks below previous low | Price breaks above previous high |
| Signal | "Smart money is still pushing" | "Smart money may be reversing" |
| Trade action | Look for continuation entries | Prepare for counter-trend trade |
The GBP/USD Case Study: September 2025 Bullish BOS
Market Context
GBP/USD had established a clear uptrend on the D1 timeframe. The dealing range was from 1.2300 (swing low) to 1.2750 (swing high), with 50% equilibrium at 1.2525. Price was in a discount zone, trading at 1.2550.
The previous swing high on H4 was at 1.2680.
Step 1: Identify the Swing High
On the H4 chart, we marked the previous swing high at 1.2680. This is the level price needs to close above for a bullish BOS confirmation.
Step 2: Wait for the Break
Price pushed up from 1.2550 during the London session. An H4 candle opened at 1.2645 and closed at 1.2695 — closing above the 1.2680 swing high. This is our bullish BOS confirmation.
Step 3: Identify the Entry Zone
After a BOS, ICT methodology teaches us to look for:
- The order block that caused the BOS (the last bearish candle before the impulse)
- Any FVG created during the break
- A retracement to the discount zone (below 50% of the new dealing range)
The new dealing range is now 1.2550 (recent low) to 1.2695 (BOS close). The 50% level is 1.2622.
We identified a bullish order block at 1.2610 (last bearish candle before the displacement to 1.2695) with an FVG from 1.2615 to 1.2628.
Step 4: Entry, Stop Loss, and Take Profit
| Parameter | Price Level | Rationale |
|-----------|------------|-----------|
| Entry | 1.2620 (OB + 50% FVG confluence) | Retracement to OB zone with FVG |
| Stop Loss | 1.2585 (below OB) | Below the entire order block zone |
| TP1 | 1.2695 | BOS level (previous high, now support) |
| TP2 | 1.2750 | Previous range high (buy-side liquidity) |
| TP3 | 1.2790 | Above range high (external liquidity) |
| R:R | 1:2.1 to TP1, 1:3.7 to TP2 | Risk 35 pips to gain 75-130 pips |
Step 5: What Actually Happened
Price retraced to 1.2618 during the Asian session (ideal for retracements as liquidity is thin). It tapped the order block and FVG zone, then reversed during the London Kill Zone:
- TP1 (1.2695): Hit within 5 hours (+75 pips)
- TP2 (1.2750): Hit within 10 hours (+130 pips)
- TP3 (1.2790): Not reached — price topped at 1.2775
Result: +75 pips (TP1) and +130 pips (TP2) — both targets hit after BOS confirmation.
How to Trade BOS: 5-Step Checklist
- Identify the current trend — Use D1 and H4 to determine if the market is bullish or bearish
- Mark the swing points — Draw horizontal lines at the most recent swing high and low
- Wait for the close — Price must CLOSE beyond the swing point (not just wick)
- Find the entry zone — Look for the order block and FVG that caused the BOS
- Wait for retracement — Enter when price returns to the OB/FVG zone in the discount array
Common BOS Trading Mistakes
- Entering on the break itself — Wait for the retracement, don't chase the move
- Using wicks instead of closes — A wick beyond the swing point is NOT a BOS
- Ignoring HTF bias — A BOS on M15 against the D1 trend is low probability
- No order block confluence — The best BOS trades have an OB + FVG to return to
FAQ
Q: Does a BOS guarantee the trend will continue?
A: No. A BOS confirms continuation intent, but smart money can still reverse. Always use a stop loss and look for additional confluence (FVG, OB, Kill Zone timing).
Q: Should I trade BOS on all timeframes?
A: BOS on H4 and D1 is most reliable. M15 and M5 BOS are only tradeable when they align with the HTF structure.
Q: What if price breaks the swing point but closes back below it?
A: This could be a false break or liquidity sweep. If price wicks above the swing high but closes below it, this is NOT a BOS — it's a potential liquidity sweep.
Risk Disclaimer
⚠️ Trading involves significant risk. This case study is for educational purposes only. Past performance does not guarantee future results.
Related Resources:
- 📊 Live Trading Signals — Real-time ICT/SMC GBP/USD signals
- 📈 Performance Track Record — Verified results
- 📚 SMC Education Hub — Free ICT/SMC courses
- 📝 All Articles
