Contents
What liquidity actually is
A stop-loss is a resting order. When enough traders place stops at the same obvious level, that level becomes a pool of resting orders that someone can see. A sweep is the process of pushing price through that pool to trigger the orders and then trading in the opposite direction once the liquidity has been consumed.
This is not a conspiracy and it does not require a villain. Market makers and large participants observe where orders cluster because the clusters are visible in the order flow. Whether that constitutes targeting is a fair debate, but the practical effect is identical either way: obvious levels get tested, and the test often fails.
The important reframe is that this is not a secret edge. It is a structural property of any market where many participants use the same technical levels, which describes every market. Stop hunting in gold covers the mechanics further.
How to identify a sweep
A sweep has a specific footprint in the order flow data, and it is quite different from a breakout. In a genuine breakout, price leaves the level with sustained aggressive pressure, and that pressure continues through the pullback. In a sweep, there is a burst of aggression through the level, and then the aggression stops abruptly. The bar closes back inside the range.
The second signature is the delta. A genuine breakout tends to carry delta with it, because the aggression is producing progress. A sweep often shows a spike in aggressive volume at the extreme but a modest net delta, because the aggressive side met a wall of passive liquidity and lost.
The third signature is speed and immediacy. Sweeps are fast, often taking only a few seconds, and reversals are equally fast. A level that price crossed twenty minutes ago and then spent fifteen minutes above is not a sweep, it is a breakout, and treating it as a sweep is a mistake that costs real money.
The three most common sweep locations
The first is the Asian range high or low. This is the most reliable in gold because the range is a well-known reference that many traders watch, which makes it a magnet for stops. A break of the Asian range that immediately returns is a classic sweep.
The second is the previous day's high or low, and the previous day's high and low are watched by essentially everybody, which is exactly why they are worth sweeping. This is the same principle that underlies the London open behaviour we described in the London open guide.
The third is a significant high volume node or the point of control on the session profile. Levels where volume concentrated attract references, and the same logic applies.
The important qualification is that these levels get swept, and they also get respected. A sweep is a signal about a specific instance, not a statement that the level is invalid forever. We see the level respected on the retest more often than not.
Trading a sweep
The entry is after the sweep has completed, not during it. You are looking for the level to be violated, price to fail to hold above or below it, and the order flow to show that the aggressive side ran out of ammunition. The invalidation is beyond the sweep extreme.
The stop goes beyond the extreme of the sweep, and the position size is computed from that stop. Because sweep reversals are often sharp, the stop can be relatively tight, which means a decent position size for the risk involved. This is one of the few gold setups where the reward-to-risk is naturally good.
The target is the opposite side of the range or the next significant level. And the timing matters: sweeps of the Asian range are best traded in the London open window, while sweeps of the previous day's extremes can occur at any session transition. Order flow scalping covers the execution details.
The trap: mistaking a breakout for a sweep
This is the expensive error, and it is the mirror image of the one most people make. If you assume every breakout is a sweep, you will fight every real trend in the market and get run over repeatedly, because trends are exactly the kind of thing that looks like a fakeout right before it continues.
The distinction is the persistence of the aggression. If price accepts above the level and holds there for a meaningful period with continuing participation, it is not a sweep. If it collapses back within a few bars with the aggressive flow drying up, it was.
There is a practical way to reduce the cost of being wrong. Rather than entering immediately on the reversal, wait for a small confirmation, such as a lower-timeframe break of the reversal structure. This reduces your win rate slightly and cuts your loss rate substantially, and the asymmetry favours it.