Judas Swing

What a Judas swing is

The pattern is a quick move in one direction near the start of a session, often shortly after a regional open, that sweeps a nearby high or low and then reverses. Traders who enter in the direction of the early move are caught, while the reversal sets the true direction for the session.

The name comes from the idea of a false signal that betrays followers. Like other labels in this glossary, it describes a pattern after the fact. Whether the early move was designed to trap anyone cannot be verified.

Typical timing

The concept is mostly applied to opens: the London open in the early morning in New York time, the New York cash open at 9:30 AM ET, and sometimes the start of the overnight session at midnight New York time. Advocates describe the first hour or two of a session as a period where price may probe one side of the range before moving to the other.

Whether sessions actually behave that way is a statistical question that depends on the instrument and the sample. Traders who use the idea should test it on their own data rather than assume it.

How it differs from a failed auction

A Judas swing is a failed auction with a time component: a probe that happens early in the session and is rejected. The auction language focuses on evidence of acceptance or rejection at a level. The Judas swing language adds a story about timing and trapping. Both describe a move beyond a reference followed by a return.

The difference matters in practice. A failed auction can occur at any time of day, while a Judas swing, as usually described, is tied to the open.

How traders use it

Traders who use the idea may wait through the first minutes after an open, mark the extremes, and look for a sweep followed by a reversal that breaks structure on a lower timeframe. The entry is then in the direction of the reversal, with risk placed beyond the swing extreme.

Others use it defensively, staying out during the first moves of the session on the grounds that early moves are unreliable. Neither approach guarantees anything: early moves often continue, and waiting can miss them.

A simple way to practice

Record, for 30 sessions, the first hour of the New York cash open or the London open. Mark the first push, whether it swept a prior level, and whether it reversed. Compare with the day direction. The sample will show whether the pattern is frequent enough in your market to be worth watching.

Judas swing versus open drive

The opposite pattern to a Judas swing is an open drive: price starts moving at the open and keeps going in the same direction with little pullback. Both patterns begin the same way, with a quick early move, so the distinction is only visible afterward. A trader who assumes every early move is a Judas swing will fight the open drives, and a trader who assumes every early move is the real one will get caught by the reversals. Waiting for evidence, such as acceptance or rejection beyond the nearby high or low, is the practical way to tell them apart.

Worked example

Common mistakes

• Assuming every early move is a trap. Many are the real direction.
• Calling a move a Judas swing only after seeing the reversal.
• Ignoring scheduled events that can drive early moves for real reasons.
• Treating the pattern as a rule rather than a hypothesis to test.

How it connects to ES, NQ, SPY and QQQ

The pattern is typically discussed for ES and NQ around the London open and the US cash open. Translating the extremes to SPY and QQQ prices with roughly 10 and 41 gives ETF references for the cash session.

LiquidityLevels briefings describe how price reacted around the Asia range and the prior day levels, including whether early probes were accepted or rejected, which is the evidence relevant to patterns like this.

Note: terms like this come from price-action frameworks popular with retail traders. They describe patterns after the fact; they are not validated predictors.

Frequently asked questions