Outside Bar Indicator: Formula, Settings and How to Read It

Outside Bar flags every bar whose range extends beyond both extremes of the bar before it — a higher high and a lower low within the same interval.

Senzoukria · Indicators · Updated September 2026

Outside Bar ships with the Senzoukria desktop app, in the Structure & sessions group of the indicator catalogue. It is drawn on the price chart.

What Outside Bar measures

The condition is strict on both sides: high[i] must exceed high[i−1] and low[i] must fall below low[i−1]. An equal high or an equal low does not qualify, the same convention used for the inside bar, so a bar that merely matches the previous extreme is not treated as having broken it. The marker is a square placed at the bar's high, deliberately not an arrow: a bar that takes liquidity on both sides has no reliable direction, and its close is not enough to assign one. The first bar of the chart has no predecessor and is never flagged.

The formula, as implemented

This is not a description of how the indicator is usually defined elsewhere — it is what the shipped code computes, documented next to the implementation:

Outside bar — range qui déborde des DEUX côtés de la précédente : high[i] > high[i−1] ET low[i] < low[i−1] Strict des deux côtés, miroir exact de l'inside bar (même justification : un extrême égal n'est pas un débordement). Marqueur : carré au HIGH — l'outside bar n'a pas de sens directionnel par construction (elle prend la liquidité des deux côtés), le close ne suffit pas à en faire une flèche. Première barre → rien.

How to read it

  • The marker reports a volatility event, not a direction — the bar traded through both of the previous bar's extremes.
  • A close near one end of the range shows which side was rejected last, but the bar still went through both prior extremes and both sides were tested.
  • Check the previous bar's size first: a bar can be outside simply because the bar before it was unusually small, which is a different situation from a genuine expansion.
  • Outside bars clustering at a session high or low mark an area where resting orders sat on both sides.
  • Read one next to Range Compression: an outside bar following a stretch of readings below 1 is expansion out of a contraction.

What it does not show

The test compares one bar with exactly one predecessor, so it has no notion of size in absolute terms: an outside bar in a quiet hour and one during a release look identical to it. It says nothing about volume, about which side was aggressing, or about the order in which the high and the low were reached inside the bar — the low may have come first or last, and the two cases mean different things. Markers are frequent in low-liquidity hours where one print widens the range. Changing to a volume or tick bar type changes the pattern entirely.

Using it in Senzoukria

Add it from the Indicators panel of any footprint chart or candle chart. It runs on futures data from Rithmic or Databento and on crypto pairs from Binance and Bybit, on the same engine — the calculation does not change with the venue, only the data feeding it does. Market data subscriptions are billed by the provider, separately from the app.

See the full indicator library, or start with the order flow guide if you are new to reading aggression, delta and absorption.

Frequently asked questions

What does an outside bar mean?
It means that within one interval price traded above the previous bar's high and below its low. Both sides of the prior range were taken out, which describes an expansion in volatility rather than a directional event.
What is the difference between an outside bar and an engulfing candle?
An outside bar compares highs and lows: the current bar's full range must exceed the previous one's on both sides. An engulfing candle compares bodies — the open and close — and adds a direction condition. A bar can be one without being the other.
Are outside bars bullish or bearish?
Neither by construction. The pattern is symmetric: it takes liquidity above and below the previous bar, so this indicator marks it with a neutral square rather than a directional arrow. Any directional reading has to come from context such as where the bar sits relative to session levels.

Keep reading

Strategy researchTest a trading strategy, from observation to challenge rulesDefine an observation, question it with the copilot, write a rule and explore costs, drawdown and fictional challenge limits in an interactive example.Quant · Start hereQuant trading for beginners: from idea to backtestDefine a testable rule, choose suitable data and evaluate later periods after costs.Order flow · HubOrder flow trading: the complete guideThe hub. What order flow is, what it shows — aggression, delta, imbalance, absorption, liquidity — and the tools that read it, each linked to a full guide.