Market structure the ICT way: BOS for continuation, MSS for the turn
Market structure is the skeleton every ICT setup hangs on. The method defines swings precisely, then separates a plain break of structure, which continues a move, from a market structure shift, which signals a turn and almost always follows a liquidity sweep. Change of character is the early warning that a shift may be coming. Getting these three terms exact is what lets the later models say take the trade or stand aside with a straight face.
Swing points, defined precisely
A swing high is a candle whose high is higher than the candle on each side; a swing low is a candle whose low is lower than the candle on each side. That three-candle definition keeps structure objective instead of a matter of taste. ICT then ranks swings as short-term, intermediate-term and long-term, where an intermediate swing high sits between two short-term ones. You mark the swings first, every time, because a break only means something once you know which swing was broken.
Break of structure (BOS)
A break of structure is price closing beyond the most recent relevant swing in the direction of the trend. In an uptrend, a close above the last swing high is a bullish BOS and says the trend is still delivering. In a downtrend, a close below the last swing low is a bearish BOS. BOS is a continuation signal. It confirms the existing draw is intact; it is not a reason to expect a reversal. ICT wants that break to come with displacement, which module 9 covers, not a limp wick.
Market structure shift (MSS)
A market structure shift is the break that matters for a turn. It is a close against the prior trend, through a short-term swing, that comes right after liquidity on the other side was swept. In a downtrend: price raids a low (sell-side liquidity), then delivers up and closes above the last lower high. That close is the MSS. The sequence is the point: sweep first, then the shift. A break with no prior raid is weaker and often just noise. MSS with displacement is the single most important confirmation in the whole method.
Change of character (CHoCH)
ICT traders use change of character for the first sign the prevailing order is breaking. In a clean uptrend of higher highs and higher lows, the first failure to make a higher high followed by a break of the last higher low is a CHoCH: the character of the move has changed from up to at-risk. CHoCH is an early warning; MSS is the confirmation. Treat CHoCH as a reason to tighten and watch, not yet a reason to reverse your bias.
Strong and weak highs and lows
Not every swing is equal. A strong high is one whose creation led to a break of a low, so it is unlikely to be revisited cheaply; a weak high is one that was already broken and is now liquidity to be taken. The same logic inverts for lows. This labelling tells you which swings are targets and which are defences. In an uptrend you expect weak highs above to be taken and strong lows below to hold, and you align entries with that expectation.
Reading structure on gold
Gold moves fast and wicks hard, so lean on body closes, not intrabar spikes, to confirm BOS and MSS. During quiet Asian hours structure often churns and gives false breaks; the cleaner reads come in the London and New York windows. Mark your swings once at the start of the session, note which highs and lows are weak (liquidity) and which are strong (defended), and wait for a sweep-then-MSS sequence rather than chasing the first break you see.
FAQ
What is the difference between BOS and MSS?
A break of structure continues the existing trend by closing beyond a swing in the trend's direction. A market structure shift turns it, closing against the trend through a swing right after liquidity on the other side was swept. BOS is continuation; MSS is the turn.
Is CHoCH the same as MSS?
They are close and some traders use them interchangeably, but this course separates them. CHoCH is the first early warning that the trend's character is failing; MSS is the confirmed shift, ideally with displacement and a prior sweep. Treat CHoCH as watch, MSS as act.
How do I define a swing high or low?
Use the three-candle rule: a swing high is a candle with a lower high on each side, a swing low is a candle with a higher low on each side. It keeps structure objective rather than a matter of opinion.
Why does a sweep need to come before the MSS?
Because ICT reads the shift as the market turning after it has collected the stops it wanted. A break with no prior raid has no fuel behind it and is more often a false move. The sweep then shift sequence is what gives the signal its reliability.
Should I use wicks or closes to confirm a break on gold?
Use body closes. Gold wicks aggressively and a spike through a level that closes back is a sweep, not a break. Waiting for a close filters most of the fakeouts, especially outside the main sessions.