What killzones are in ICT trading
In ICT methodology, killzones are specific time windows during the trading day when ICT traders expect the highest-probability moves, and the methodology treats them as the only windows worth trading. ICT traders use the term for these focused session windows rather than for a pattern on the chart, and the idea is that the moves worth catching cluster into a few hours of the day (The Inner Circle Trader, ICT methodology).
ICT stands for the Inner Circle Trader, the public name of trader Michael Huddleston, and killzones are taught across his 2022 Mentorship Model as the time layer of a setup. The recurring practitioner phrasing is that the killzone does the heavy lifting and the trader simply shows up to it.
I keep the phrase "in ICT methodology" on the definition because the framing decides everything. The fact that session opens carry more volume is real and measurable, but the specific killzone label and the rule that they are the only times worth trading are claims the methodology makes, and whether they hold up is an empirical question each trader has to test.
The four ICT killzones and their times
ICT traders split the day into four windows, and the names map onto the major forex sessions. The Asian killzone covers the Tokyo session, the London killzone covers the London open, the New York killzone covers the New York morning, and the London Close killzone covers the overlap as London winds down (The Inner Circle Trader, ICT methodology).
| Killzone | Approx window (New York time) | What ICT traders watch for |
|---|---|---|
| Asian | 20:00 to 00:00 | A range that sets the highs and lows London may sweep |
| London | 02:00 to 05:00 | The London open, the Judas swing, and the first real expansion |
| New York | 07:00 to 10:00 | The New York morning open and the AM session move |
| London Close | 10:00 to 12:00 | The close-of-session reversals and profit-taking |
I present the times as the windows ICT traders commonly use rather than as fixed clocks. They shift by an hour with daylight saving in the US and Europe, the borders are loose, and two educators will often quote slightly different windows for the same zone.
The Judas swing: the false move at the open
The Judas swing is the false move at the session open, and ICT traders read it as the bait that has to resolve before the real direction shows. It most often forms at the London open, in the window from the New York midnight open through the first hours of London, and it runs the obvious levels in the wrong direction before reversing into the true expansion (The Inner Circle Trader, ICT methodology).
The Judas swing is a form of inducement placed at a specific time rather than a random pattern. It sweeps the Asian session highs or lows, traps the early entries, and the methodology waits for the sweep plus a structure shift before committing to the real direction.
I treat the Judas swing as a time-stamped trap rather than a guarantee. It does not print every session, it can run further than a stop allows, and reading every open move as the Judas swing is how traders front-run the wrong direction.
Why time matters, and what is actually proven
The honest evidence sits one level up from ICT. Session opens genuinely carry more volume, and the London to New York overlap is the highest-volume period of the forex day, which is documented in the Bank for International Settlements Triennial Survey and in decades of FX microstructure research.
That real clustering is the closest anchor for why a time window would matter at all.
The ICT-specific claim is narrower and stronger. The methodology asserts that killzones are the only windows worth trading and that smart money operates on a schedule within them, which is a story layered on top of the volume observation rather than a fact the volume data confirms.
I split the two because conflating them is where the method oversells itself. The observation that volatility clusters into session opens is real and measurable, but whether trading only inside an ICT killzone produces a reliable edge is an untested empirical question the turnover data does not answer.
Killzone indicators, and whether you need one
Plenty of traders search for a killzone indicator for MetaTrader or TradingView, and the honest answer is that you do not need one. An indicator only draws shaded boxes over the session times, which you can mark yourself with vertical lines at the London, New York and London Close windows, and the value is the time discipline rather than the tool.
The commercial appeal of these indicators trades on the idea that the boxes themselves carry an edge, which loops back to the unproven killzone claim. I mark the windows once on my chart and read price inside them, because paying for a box-drawing script adds convenience but not an edge.
The same honesty applies to the PDFs and session-time cheat sheets the SERP sells. The times are free and widely published, and a downloadable sheet that repeats them is not a method, it is a timetable dressed up as a system.
How killzones fit the ICT sequence
Killzones are the WHEN layer of an ICT setup, and reading them in isolation strips away the context that makes them useful. The full method stacks a time window with a directional bias, a liquidity event, and an entry object, so the killzone tells you when to watch and the rest of the stack tells you what to do (The Inner Circle Trader, ICT methodology).
A textbook London setup runs from the Judas swing through a break of structure to a retrace into an order block or fair value gap. The killzone is the window in which that sequence is expected to play out, and the swing-trading application of SMC is where the time layer meets the rest.
I treat the window as a filter rather than a signal. Trading inside a killzone without a structural read is just trading at a busy time, and the discipline of stacking the window with bias, sweep and entry is the method's genuine contribution.
The win-rate claim nobody can source
You will read that killzone entries win a high percentage of the time, or that trading only inside the windows is the single biggest edge in ICT. I have not found a peer-reviewed or tier-1 study that tests ICT killzones as a time filter and publishes a win rate, and neither has any page I have seen quote one with a citation.
Every specific percentage traces back to an unsourced claim repeated until it reads like data. The honest statement is that no verified backtest exists in the public literature, and anyone quoting a number should link the study or retract it.
I would rather tell you the evidence is missing than invent a reassuring statistic. The absence of a clean win-rate study is itself the finding, and it means the only honest way to size the edge is to test the method yourself on your own data and treat your result as a sample, not a certainty.
Where killzones fail
Killzones are not magic windows, and I want that stated before any setup logic. Major moves happen outside them, quiet sessions produce no expansion inside them, and the Judas swing fails to form on plenty of opens, so the time filter raises probability in the methodology's terms without guaranteeing a trade.
Session volatility varies day to day, which the fixed-window framing hides. A London killzone on a quiet news day behaves nothing like one on a release day, and treating every window as equally loaded is how traders force trades in dead hours.
The disciplined response is to treat the killzone as one confluence factor inside the larger stack. A higher-timeframe bias, a killzone window, a Judas swing that sweeps inducement, and a retrace into an order block together raise a setup above a coin flip in the methodology's own terms, and trading the window alone is just being in the market at a busy time.