ICT Decoded · Internal vs External Liquidity
What Is Internal and External Liquidity in ICT?
By Steve H — reads every firm’s official rulebook, checks prices and codes daily, and maintains the Enigma Score · Methodology · Editorial policy · Last updated October 31, 2026
ICT concepts were created and are taught by Michael J. Huddleston, The Inner Circle Trader (X · YouTube). This lesson is FundedEnigma’s own summary, not affiliated with or endorsed by ICT.
In short: In ICT's model, external range liquidity is the swing highs and swing lows at the edges of a range, and internal range liquidity is the fair value gap inside it. Price tends to alternate between them: after it takes external liquidity it seeks internal liquidity, and after it respects internal liquidity it reaches for the next external level.
How to Use Internal and External Liquidity Like a Pro (ICT IRL ERL) · 6:17 · published October 31, 2026 · part of the ICT Concepts Decoded playlist
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The full video is embedded above this article: How to Use Internal and External Liquidity Like a Pro (ICT IRL ERL). This page is the written version, with every chart walked through step by step. Jump to any part of the video:
Key facts: internal and external liquidity at a glance
| Term | What it is | Where it sits |
|---|---|---|
| External range liquidity (ERL) | Swing highs and swing lows, with stop orders beyond them | At the edges of the range: buy stops above highs, sell stops below lows |
| Internal range liquidity (IRL) | A fair value gap (FVG) | Inside the range, where price moved fast in one direction |
| Fair value gap | A three-candle move where the wicks of candle one and candle three do not overlap | Between those two wicks |
| External to internal | After price takes a high or low, it tends to pull back into a fair value gap | The pullback's likely stopping area |
| Internal to external | After price respects a fair value gap, it tends to reach for the next high or low | The next leg's likely target |
| Failed gap | Price closes straight through the fair value gap instead of respecting it | The external liquidity on the other side becomes the more likely target |
Last verified 2026-10-31. All charts below are real historical CME NQ futures data, shown in New York time.
Here is the whole idea on one chart: daily Nasdaq futures, summer 2026.
- A sell-off runs through the July lows and bottoms out on July 29.
- Price rips higher and leaves a gap behind it.
- It takes the July 10 high, then falls for four weeks, straight back into that gap.
- From the gap, it rallies through the August high.
What is external range liquidity?
External range liquidity is the swing highs and swing lows at the edges of a range. Buy stops rest above the highs and sell stops rest below the lows, so these levels are pools price is drawn to (see our liquidity guide for how those pools form).
How to read this diagram:
- The swing high near the top has buy stops resting above it (the dots).
- The swing low near the bottom has sell stops resting below it.
- Together they are the range's external liquidity: the edges.
What is internal range liquidity?
Internal range liquidity is a fair value gap inside the range. A fair value gap is a three-candle move where the wick of the first candle and the wick of the third candle do not overlap. In the diagram above it is the purple box between the swing low and the swing high.
Why does a fair value gap attract price?
Because it marks a spot where price moved so fast it only really offered one side. The market tends to come back and rebalance that area, which is why a pullback often stops there.
How does price move between internal and external liquidity?
In ICT's model, every leg has one of two jobs: run a resting high or low, or return to rebalance a fair value gap. That gives a simple back and forth:
- External taken, so seek internal. After price takes a high or a low, look for a pullback into a fair value gap.
- Internal respected, so seek external. Once price reaches the gap and holds it, look for it to reach for the next old high or old low.
- Repeat. External to internal, internal to external, over and over, on every timeframe.
Where do pullbacks stop?
Often in the nearest fair value gap left by the move that took the external liquidity. The cycle gives you two answers: where a pullback is likely to stop, and where the next leg is likely to go.
How do you read the cycle on a daily chart?
Label each step: external taken, internal reached, external taken again. Here is the summer 2026 daily chart, step by step.
- July 29. The sell-off runs through the July lows and bottoms out at 27,201.50. External liquidity, taken.
- The gap. Price displaces higher. Between the July 31 high (28,725.75) and the August 4 low (28,831.75) it leaves a daily fair value gap, about a hundred points tall. That gap is internal liquidity.
- August 13. Price doesn't come back to the gap yet. It keeps reaching up and takes the July 10 high of 30,077.75. External liquidity, again.
- August 17. It tops out at 30,343.00. Now the job is internal liquidity.
- September 14. After four weeks of selling, the low trades into the gap at 28,816.25, and stops.
- September 21. The gap held, so the draw was external again: the August 17 high. One week after the September 14 low, on September 21, it is taken, and that session trades up to 30,862.75.
When does the internal and external liquidity cycle fail?
When there is no gap, when the gap fails, or when there is no pullback at all. Three things to watch:
- No gap, no internal target. If price takes a high without leaving a fair value gap behind, wait for one to form before you expect a pullback to a specific place.
- A gap that fails. If price closes straight through the fair value gap instead of respecting it, the gap is broken. The external liquidity on the other side becomes the more likely target.
- No pullback at all. Sometimes price takes the high and just keeps going. The cycle tells you where a pullback should stop, not that one has to come.
Does internal and external liquidity work on every timeframe?
Yes, and the timeframes nest. One daily leg from internal to external is built from many smaller cycles on the hourly and fifteen-minute charts.
What does the cycle look like intraday?
The same steps, in hours instead of weeks. Two real sessions follow, one bullish and one bearish.
Example 1: NQ 15-minute, March 10, 2026
- London builds a range overnight, between 24,939.00 and 25,150.50.
- At 08:04 New York time, price runs the London low. Sell-side, external liquidity.
- From 10:15, price displaces higher and leaves a 15-minute fair value gap between 25,024.75 and 25,085.50, about 60 points tall.
- At 10:59 it takes the London high. Buy-side, external liquidity. The top of that push prints at 11:02, at 25,182.00.
- External taken, so look for internal. At 12:06, price trades back into the fair value gap. The low, 25,080.25 at 12:07, is just inside it, and it holds.
- Internal reached and respected, so the next draw is external: the 11:02 high. It is taken at 13:16, and the high of the day prints at 13:28, at 25,217.50.
Example 2: NQ 1-hour, February 26-27, 2026
- On February 26, price tops out at 25,415.25 at 08:48.
- The 9 and 10 a.m. hourly candles displace lower and leave a bearish fair value gap between 25,085.50 (the 11 a.m. candle's high) and 25,181.25 (the 9 a.m. candle's low), almost a hundred points tall.
- On the way down, at 10:16, price takes the February 24 swing low of 24,994.00. Sell-side, external liquidity. The selling bottoms out at 24,861.75 at 10:34.
- External taken, so look for internal. Through the afternoon price climbs back. At 14:23 it trades into the bottom of the gap, and the high of that rally is 25,099.00 at 14:55. It never gets through the gap.
- Internal respected, so the draw flips back to external: the 10:34 low. It is taken at 08:30 on February 27, and price trades down to 24,782.00 by 09:43.
How should you use this in your own charting?
As a map of where price is likely to go next, not as an entry signal on its own. It tells you where a pullback should stop and where the next leg should reach; the session's own price action tells you when.
- Write the state before the session. "External just taken, looking for internal at the gap" or "Internal held, looking for the next high."
- Expect imperfection. Gaps get overshot by a few points and some pullbacks never come.
- Pair it with the draw. The external level price is reaching for is its draw on liquidity.
More concepts in the series are on the ICT Concepts Decoded hub. If you trade futures with a prop firm, you can look up a firm's rules on the challenges page or set two firms side by side on the compare page.
Frequently asked questions
What is IRL and ERL in trading?
IRL is internal range liquidity and ERL is external range liquidity. In ICT's teaching, ERL is the swing highs and lows at the edges of a range, and IRL is the fair value gap inside it.
Is internal liquidity always a fair value gap?
In ICT's internal and external liquidity model, yes: internal range liquidity is the fair value gap. Other areas inside a range can matter, but this model uses the gap.
What happens after price takes a high?
Often a pullback into the nearest fair value gap below it. If price respects that gap, the next old high becomes the more likely target. If it closes straight through the gap, the lows below come into play.
Does price always return to the fair value gap?
No. Sometimes price takes a high and keeps going without a pullback. The cycle tells you where a pullback is likely to stop, not that one must come.
Which timeframe should I use for internal and external liquidity?
Any. The same cycle shows on the daily, hourly and fifteen-minute charts, and smaller cycles sit inside each larger leg. The examples here use the daily, the 1-hour and the 15-minute chart.
How is this different from the draw on liquidity?
The draw on liquidity is the level price is heading for. Internal and external liquidity describe the back and forth: after a pullback into internal liquidity, the external level ahead is usually the draw.
Sources
- Concept: internal and external range liquidity, fair value gaps and swing liquidity come from the teachings of ICT (The Inner Circle Trader, Michael J. Huddleston), who originated these terms. The explanation, examples and charts on this page are our own.
- Data: every chart is real historical CME Nasdaq-100 E-mini (NQ) futures data, shown in New York time.
- Video: How to Use Internal and External Liquidity Like a Pro (ICT IRL ERL), FundedEnigma.
Last verified: 2026-10-31. Written by Steve H.
Disclaimer: This page is for education only and is not financial advice. Trading futures involves substantial risk of loss. Past price behaviour does not guarantee future results.
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