The Three Pillars of SMC Market Structure
If you're learning Smart Money Concept (SMC) or ICT methodology, CHoCH, BOS, and IDM will appear in every lesson. Here's the clearest possible explanation.
BOS — Break of Structure
A Break of Structure occurs when price closes beyond the previous significant swing high (in an uptrend) or swing low (in a downtrend).
- In an uptrend: Price breaks above the last Higher High → BOS to the upside = trend continuation
- In a downtrend: Price breaks below the last Lower Low → BOS to the downside = trend continuation
BOS confirms that the existing trend is continuing. It tells you: "Smart Money is still pushing in this direction."
CHoCH — Change of Character
A Change of Character is the first sign that the trend may be reversing. It happens when price breaks in the opposite direction of the current trend:
- In an uptrend: Price breaks below a previous Higher Low → CHoCH = potential reversal signal
- In a downtrend: Price breaks above a previous Lower High → CHoCH = potential reversal signal
CHoCH does NOT confirm a reversal — it's an alert. You need more confluence before taking action.
IDM — Inducement
Inducement is a deliberate price move by institutional traders designed to trigger retail Stop Losses before the real move begins.
Classic IDM setup:
- Price forms a clear swing high (retail traders place SL just above it)
- Price briefly spikes above that high, triggering all those SLs
- Price immediately reverses and drops sharply — this was the real move
Identifying IDM helps you avoid being the "liquidity" that banks hunt, and instead position yourself on the right side of the move.
How to Use All Three Together
The classic SMC entry pattern:
- Identify the current market structure (uptrend / downtrend)
- Wait for CHoCH as the first warning of reversal
- Look for IDM (stop hunt) near key levels
- Wait for BOS in the new direction for confirmation
- Enter on the retest of the Order Block that caused the BOS
