ICT Swing High and Swing Low — How to Identify Them Correctly
Swing highs and swing lows are the building blocks of all ICT structure analysis. But most traders identify them incorrectly. This guide explains the exact ICT definition and why precision matters.
Swing highs and swing lows are the most fundamental price action elements in all of ICT methodology. Every structural concept — BOS, ChoCH, MSS, OB identification, liquidity pool marking — depends on correctly identifying swing highs and lows. Yet this is one of the most commonly done incorrectly. The ICT definition of a swing high and swing low is precise, and using that precise definition rather than a subjective one is critical for consistent structural analysis.
The ICT Swing High Definition
A swing high in ICT terms is a candle (or bar) whose high is higher than the high of the candle to its left AND higher than the high of the candle to its right. Minimum requirement: one lower high on each side. This creates the classic three-candle swing high: a candle with a lower high, followed by the swing high candle, followed by another candle with a lower high.
For a more significant swing high — one that carries more structural weight — you require more candles on each side. A swing high with three lower highs on both sides is more significant than a swing high with only one lower high on each side. The more candles required to confirm the swing, the more liquidity has accumulated above it, and the more significant the level is for structural analysis.
The ICT Swing Low Definition
A swing low is the mirror: a candle whose low is lower than the low of the candle to its left AND lower than the low of the candle to its right. One higher low on each side is the minimum. Like swing highs, more confirming candles on each side = more significant swing low.
Why Precision Matters
- diamondIf you misidentify a swing high, your BOS and ChoCH calls will be wrong — leading to incorrect bias and incorrect entries.
- diamondSwing highs are where buy-side liquidity accumulates. If your swing highs are wrongly placed, your BSL levels are wrong, your liquidity pool targets are wrong, and your Turtle Soup setups are based on false levels.
- diamondOrder Blocks are identified relative to swing extremes — the last opposing candle BEFORE the swing. Wrong swing = wrong OB.
- diamondThe equilibrium (50%) of any range requires correct swing identification as the anchor points. Wrong swings = wrong premium/discount zones.
- diamondOn the 5-minute chart, use the minimum definition (one confirming candle on each side) for precision entries. On the daily chart, use 3-5 confirming candles on each side for structural significance.
Fractal Swing Highs and Lows
ICT teaches that swing highs and lows are fractal — the same structures appear on every timeframe. A 5-minute swing high is a minor structural point within a 1-hour swing that is itself within a daily swing. The significance of each swing is proportional to the timeframe on which it forms: daily swing highs are major structural levels with large liquidity pools; 5-minute swing highs are minor structural points for entry timing only.
Understanding the fractal nature of swings is what allows ICT top-down analysis to work: you identify the major swing high on the daily (the ERL target), the intermediate swing on the 4-hour (the retracement boundary), and the minor swing on the 15-minute (the entry trigger). Each timeframe's swings are valid at their own level of significance.
Exercise: on a clean chart with no indicators, mark every swing high and swing low using the strict ICT definition (one confirming candle on each side minimum). Then classify each one as STH/STL, ITH/ITL, or LTH/LTL based on the three-tier hierarchy. Repeat this on 20 different charts across multiple timeframes. Within two weeks, swing identification will be automatic and your entire structural analysis will become significantly more accurate.