What is a liquidity sweep?
A liquidity sweep happens when price trades just beyond a level where many stop orders are resting, fills those orders, and then moves back the other way. It is also called a stop hunt, stop run, or liquidity grab. The level itself does not matter much; what matters is that enough traders have orders sitting just beyond it.
Stops above a high are buy orders: short sellers protecting themselves and breakout traders waiting to buy. Stops below a low are sell orders. When price reaches that pool, those orders fill in a burst. Larger participants can use that burst to fill positions in the opposite direction, which is why a sweep is often followed by a sharp reversal.
Where liquidity sits on a chart
Liquidity builds up wherever many traders would naturally place stops. The most common places:
- Equal highs and equal lows. Two or more highs (or lows) at nearly the same price look like strong resistance or support, so stops cluster just beyond them.
- Session highs and lows. The Asia, London, and New York session ranges, plus the prior day's high and low.
- Swing highs and lows. Clear turning points on the 15-minute, 1-hour, and 4-hour charts.
- Round numbers. Whole and half numbers on index and metals futures attract orders.
What a sweep looks like, bar by bar
- The run. Price pushes through the level, often quickly, as resting stops trigger.
- The failure. The push stalls. On the bar or bars that ran the level, buyers (at a low) or sellers (at a high) take over.
- The close back inside. Price closes back on the original side of the level. Many traders require this close before calling it a sweep, because a wick alone can still turn into a breakout.
Sweep or breakout?
The first bars of a sweep and the first bars of a breakout look the same. The difference shows up next:
| Close after the run | Sweep: closes back inside the level. Breakout: closes and holds beyond it. |
| Follow-through | Sweep: no continuation, quick rejection. Breakout: further bars in the same direction. |
| Order flow | Sweep: aggressive volume fades into the new extreme. Breakout: volume delta expands with price. |
| Higher-timeframe direction | Sweeps against the higher-timeframe trend tend to fail; sweeps in its favor tend to reverse cleanly. |
The order-flow side of this is covered in detail in CVD and liquidity sweeps.
Common mistakes with sweeps
- Fading every sweep. On a strong trend day, levels in the trend's direction break and keep going. A sweep is a setup condition, not a signal.
- Entering on the wick. Buying the moment price trades below a low means buying before you know whether it will close back above it.
- Ignoring the timeframe. A 1-minute swing low holds far less liquidity than the prior day's low. Bigger, more obvious levels matter more.
- Trading thin hours. Overnight sweeps of tiny ranges often mean little once the main session's volume arrives.
How ATLAS uses liquidity sweeps
ATLAS tracks equal highs and lows and multi-timeframe swing points, the levels where stops build up, and flags the moment one is swept. In ATLAS, the sweep is what starts a setup, not the entry. After a sweep, ATLAS waits for price to reach a valid zone and for a micro break of structure in the direction of the higher-timeframe bias. Only when that whole sequence completes does a buy or sell signal print. Sweeps against the higher-timeframe bias do not produce signals.
The features page lists the settings, including how close two highs or lows must be to count as equal.