Direct Answer
Every price bar has a range: the distance from its low to its high. An outside bar is any bar whose range extends past the prior bar's range on both ends at once, the new high clears the old high, and the new low breaks the old low.
Key Takeaways
- An outside bar's entire high-low range exceeds the prior bar's range on both ends, its high is higher and its low is lower than the bar before it.
- The pattern signals an expansion in volatility and a battle between buyers and sellers, both testing beyond the prior bar's boundaries within a single bar.
- An outside bar is range-based, not body-based, it's a distinct concept from an engulfing candlestick pattern, which is defined by the open-to-close body instead.
- The bar's range confirms only that volatility expanded, not which side won; where the bar closes relative to that range, and what follows, does most of the directional work.
- Context matters: an outside bar at a well-tested support or resistance level, or after a period of unusually tight range, generally carries more weight than one in the middle of a trend.
Outside Bar
An outside bar is a bar whose entire high-low range exceeds the prior bar's range on both ends, its high prints above the prior bar's high, and its low prints below the prior bar's low, fully engulfing it. The result is a visible expansion in volatility and a single-bar battle between buyers and sellers, each pushing price beyond where the previous bar left off.
What Is an Outside Bar?
Every price bar has a range: the distance from its low to its high. An outside bar is any bar whose range extends past the prior bar's range on both ends at once, the new high clears the old high, and the new low breaks the old low. Because the comparison uses only the high and low, an outside bar says nothing on its own about where the bar opened or closed; two outside bars with identical ranges can close at opposite extremes and mean very different things.
The pattern is a volatility signal first and a directional signal second. A bar that trades a wider two-sided range than the one before it shows that more participants were active, or that a piece of information moved the market enough to test both sides of the prior range. Whether buyers or sellers ultimately controlled that wider range is read from the close, not the range itself.
How an Outside Bar Forms
An outside bar typically forms after a period of relatively contained, narrower-range bars, a stretch where price has been consolidating or testing a level without much follow-through. That narrower range primes the setup: it gives the next bar more room to exceed both boundaries and register as an outside bar. The trigger is often a burst of participation, new information, a level giving way, or stops from both sides of the market getting triggered in the same bar.
Structurally, only two bars are required to identify the pattern: the prior bar establishes the range to be exceeded, and the current bar is the outside bar itself. Everything before and after those two bars is context that helps judge how meaningful the expansion is, not part of the pattern's definition.
Outside Bar Example
The chart below shows a deterministic, illustrative example: a narrower bar is immediately followed by a bar whose high is higher and whose low is lower, fully engulfing the first bar's range. Toggle between two possible continuations: a confirmation (the next bars follow through in the direction the outside bar closed) and a failure/look-alike (price reverses back through the outside bar's own extreme, invalidating the directional read).
How to Trade an Outside Bar
Read the close, not just the range
The range alone only confirms volatility expanded, it does not say who won. A close near the outside bar's high favors buyers, a close near its low favors sellers, and a close near the middle of the range leaves the bar genuinely undecided. Most approaches treat the close-relative-to-range as the first directional clue, not the pattern itself.
Weigh the context it forms in
An outside bar that forms at a well-tested support or resistance level, or after an unusually tight consolidation, is generally read as more meaningful than one that appears mid-trend with no nearby level. Where the expansion happens matters as much as that it happened.
Wait for follow-through before treating it as directional
Because a single wide bar can just as easily mark indecision as a turning point, many approaches wait for the next bar or two to continue in the direction implied by the outside bar's close before acting on it as a directional signal, rather than trading the outside bar in isolation.
Common Outside Bar Mistakes
- Assuming direction from the range alone, an outside bar confirms volatility expanded, not which side won; the close and follow-through carry the directional information.
- Confusing an outside bar with an engulfing candlestick pattern, see the comparison below; one is defined by range, the other by body, and they don't always coincide.
- Ignoring where the bar formed, an outside bar in the middle of a trend, with no nearby level or prior consolidation, carries much less significance than one at a tested level.
- Trading the bar in isolation, acting immediately on the outside bar's close without waiting for follow-through risks trading a bar of pure indecision rather than a real turning point.
Outside Bar vs. Similar Concepts
| Term | What it emphasizes | Key difference from an outside bar |
|---|---|---|
| Outside bar | High-low range exceeding the prior bar's range on both ends | Baseline, defined purely by range, not by open or close |
| Inside bar | High-low range fully contained within the prior bar's range | The opposite structure: a contraction in range rather than an expansion |
| Engulfing candlestick pattern | Open-to-close body covering the prior candle's body | Defined by the body, not the range, a bar can be one without being the other |
| Wide-range bar | A single bar with an unusually large range versus recent average range | Measured against a recent average, not strictly against the one prior bar |
How This Differs from Outside Day
Outside bar is the general term: it applies to any chart timeframe, a 5-minute bar, an hourly bar, a weekly bar, or a daily bar, wherever one bar's range fully exceeds the bar immediately before it. Outside day is the specific case of an outside bar occurring on the daily timeframe, where it carries extra weight most traders don't apply to intraday outside bars: a full session's worth of participation, alignment with the broader daily trend, and a next-day close that many approaches treat as the real confirmation step. If you're analyzing a chart of any period other than daily, this page's definition applies directly; if you're specifically looking at daily candles and want the trend-context and reversal-confirmation nuances that come with that timeframe, see the Outside Day page.
Limitations of the Outside Bar Pattern
An outside bar is read from a single bar's range against the one before it; it does not reveal what happened between them, who was trading, or why the range expanded. It confirms only that volatility expanded, not that a durable directional shift occurred, many outside bars mark indecision that resolves in either direction on the following bars. Like other single-bar patterns, it's best combined with level context, trend, and confirmation from subsequent bars rather than traded in isolation.
Range Engulfing Is Not Body Engulfing
The most common confusion around this pattern is with the engulfing candlestick, and the two are defined on different measurements. An outside bar is about the high-to-low range exceeding the prior bar on both ends. An engulfing candle is about the body, the open-to-close portion, covering the prior body. A bar can be one without being the other, and treating a chart annotation as either indiscriminately imports expectations from a pattern that is not present.
Once that is settled, the pattern says one thing clearly: volatility expanded and both sides tested beyond the prior bar boundaries within a single bar. That is a statement about activity, not about who won, and the directional information lives in where the bar closed and in what the following bars do.
Position in the chart carries the rest. An outside bar in the middle of a trend reads differently from one after an extended move or inside a range, and the same shape supports different conclusions in each case.
What the bar cannot show is the path. Two very different sequences of trading, one that spiked up then collapsed and one that did the reverse, can produce the identical outside bar, and many of them mark indecision that resolves either way afterwards.
Outside Bar FAQs
What is an outside bar?
An outside bar is a bar whose entire high-low range exceeds the prior bar's range on both ends, its high is higher than the prior bar's high, and its low is lower than the prior bar's low. It signals an expansion in volatility and a battle between buyers and sellers within a single bar.
How is an outside bar different from an engulfing candlestick pattern?
An outside bar is defined purely by the high-low range: the current bar's range must exceed the prior bar's range on both ends, regardless of open or close. An engulfing candlestick pattern is defined by the body: the current candle's open-to-close body must fully cover the prior candle's body. A bar can be an outside bar without being an engulfing pattern, and vice versa, because range and body are measured differently.
What does an outside bar signal about market volatility?
An outside bar shows that trading activity within that single bar covered more ground, in both directions, than the prior bar, a visible jump in realized volatility. It often appears when new information hits the market or when a level draws in both breakout buyers and sellers defending the prior range, producing a wider two-sided range than normal.
How do traders confirm the direction of an outside bar before trading it?
Because an outside bar only confirms that range expanded, not which side won, most approaches wait for the close relative to the bar's own range and for the next bar or two to continue in that direction before treating it as directional. A close near the bar's high favors buyers, a close near the low favors sellers, and a close near the middle leaves the bar genuinely undecided.
What invalidates an outside bar's directional signal?
If price closes back through the outside bar's own high or low in the opposite direction of the read, for example, closing above the outside bar's high after it closed bearish near its low, the directional read is invalidated, since the follow-through that would have confirmed the bar's implied winner failed to happen.
Does an outside bar have to close outside the previous bar range?
No. The definition concerns the high and the low only: the bar must exceed the previous high and undercut the previous low. Where it closes is a separate observation that many frameworks add as a second condition, since a close beyond the prior range is a stronger statement than a close back inside it. The base definition does not require it.
What is a directionless outside bar?
One that exceeds both extremes of the previous bar and then closes near the middle of its own range. It records that both sides pushed and neither finished in control. Frameworks that read outside bars directionally have nothing to work with in this case, which is a substantial share of them, and treating the close position as part of the pattern is what separates the informative instances.
Is an outside bar a form of range expansion?
By construction, yes: exceeding the previous bar in both directions means the range is necessarily larger than the previous bar range. That makes every outside bar a local expansion relative to one prior bar. It does not make it a wide-range bar in the usual sense, since the previous bar may have been unusually narrow and the outside bar merely ordinary.
Can outside bars occur consecutively?
Yes, and a run of them describes ranges expanding bar after bar, with each session covering everything the previous one did and more. It is an uncommon and distinctive sequence, usually associated with a sharp increase in uncertainty. It also means each successive bar is contributing a larger value to any range-based volatility measure computed on the series.