Direct Answer
A Three Inside Up is a three-bar bullish reversal pattern that appears after a downtrend. It starts with a Bullish Harami: a long bearish candle followed by a small body that's contained within the first candle's range.
Key Takeaways
- Three Inside Up is a three-bar bullish reversal pattern that appears after a downtrend.
- It's built from a Bullish Harami, a long bearish candle followed by a small body contained within it, plus a third confirming bar.
- The third bar must close above the first bar's high; without that close, the pattern is only a Bullish Harami, not a Three Inside Up.
- Because confirmation is already built into the pattern, Three Inside Up is considered a more complete signal than a bare Bullish Harami on its own.
- It is the bullish mirror image of Three Inside Down.
Three Inside Up Candlestick Pattern: Formation, Meaning, and Signals
A Three Inside Up is a three-bar bullish reversal pattern appearing after a downtrend, formed by a Bullish Harami followed by a third bar that closes above the first bar's high. That third-bar close is what confirms the reversal, the mirror image of Three Inside Down.
What Is a Three Inside Up?
A Three Inside Up is a three-bar bullish reversal pattern that appears after a downtrend. It starts with a Bullish Harami: a long bearish candle followed by a small body that's contained within the first candle's range. On its own, a Bullish Harami only signals indecision after a downtrend, it doesn't confirm anything.
What turns that two-bar setup into a Three Inside Up is a third bar: one that closes above the first bar's high. That third-bar close is the confirmation that separates a completed Three Inside Up from a bare Bullish Harami waiting to be confirmed, or never confirmed at all. It is the mirror image of Three Inside Down, which uses the same three-bar logic to signal a bearish reversal after an uptrend.
How a Three Inside Up Forms
The pattern requires exactly three bars, forming after a downtrend:
- Bar one, a long bearish candle, consistent with the prevailing downtrend.
- Bar two, a small body contained within bar one's range, forming a Bullish Harami together with bar one.
- Bar three, the confirming bar, which closes above bar one's high.
All three conditions must be present. A downtrend followed by a Bullish Harami that never sees a third bar close above the first bar's high is not a Three Inside Up, it's an unconfirmed Bullish Harami.
Three Inside Up Example
The chart below shows a deterministic, illustrative example: a downtrend leading in, the Bullish Harami and confirming third bar forming the pattern, then two possible continuations, a confirmation (price follows through higher) and a failure/look-alike (price fails to hold above the pattern). Toggle between them to see why the third bar's close is what completes the signal.
How to Trade a Three Inside Up
Confirmation is already built in
Because the third bar's close above the first bar's high is part of the pattern's own definition, Three Inside Up is considered a more complete signal than a bare Bullish Harami on its own. A trader reading a Bullish Harami alone is still waiting for confirmation; a trader reading a completed Three Inside Up already has it.
Verify all three bars before acting
Before treating a setup as a Three Inside Up, confirm the full sequence is present: a long bearish candle, a small contained body, and a third bar closing above the first bar's high. A setup missing the third bar's confirming close is not yet, and may never become, a Three Inside Up.
Read it against the broader trend
Like any reversal pattern, a Three Inside Up is defined as appearing after a downtrend. The same three-bar shape without a prior downtrend in place doesn't carry the same reversal implication.
Common Three Inside Up Mistakes
- Treating a Bullish Harami as equivalent to Three Inside Up, the Harami alone lacks the confirming third-bar close that this pattern requires.
- Stopping the count at two bars, identifying only the Harami and calling it complete, instead of waiting for the required third bar.
- Acting before the third bar closes, entering on the Harami alone skips the confirmation that defines the pattern.
- Ignoring the prior trend, the pattern is defined as a reversal after a downtrend, not a standalone three-bar shape in any context.
Three Inside Up vs. Similar Patterns
| Pattern | Base two-bar shape | Key difference from Three Inside Up |
|---|---|---|
| Three Inside Up | Bullish Harami | Baseline, Bullish Harami plus a confirming third bar closing above the first bar's high |
| Bullish Harami | Bullish Harami | Just the first two bars, no confirmation built in |
| Three Outside Up | Bullish Engulfing | Built on Bullish Engulfing instead of Bullish Harami as the base two-bar shape |
Limitations of the Three Inside Up Pattern
A Three Inside Up describes a specific three-bar open-close relationship after a downtrend, it does not tell a trader how large the following move will be, how long it will last, or anything about volume or order flow behind the bars. It also does not remove the need for context: the pattern is defined relative to a prior downtrend, so the same three-bar sequence appearing without one doesn't carry the same reversal implication. Like any candlestick pattern, it works best combined with broader trend and level context, not read in isolation.
The Pattern Names Its Own Confirmation Price
Most candlestick patterns leave you to decide what counts as confirmation. This one specifies it: the third bar must close above the first bar high. That is a precise, checkable price rather than a judgment about whether the next session looked convincing, and it is one of the more useful properties of the pattern. It also means the level is knowable while the harami is still forming, so you can write it down before the third bar prints.
Without that close, what you have is a bullish harami and nothing more. The distinction is not pedantic: the harami describes selling that stopped covering ground, and the confirming close describes buyers taking back the whole of the first session.
Everything the harami requires still applies underneath. The second bar body has to sit entirely inside the first bar body, measured on opens and closes rather than on the full ranges, and its colour is not part of the definition.
And the sequence needs a real downtrend in front of it, since three bars in a range describe a large session, a quiet one and a recovery, which happens constantly without meaning anything.
Three Inside Up FAQs
Is a Bullish Harami the same as a Three Inside Up?
No. A Bullish Harami is only the first two bars, a long bearish candle followed by a small body contained within it. A Three Inside Up adds a required third bar that closes above the first bar's high, which is what turns the Harami into a confirmed signal.
Why is a Three Inside Up considered stronger than a bare Bullish Harami?
Because confirmation is already built into the pattern. A bare Bullish Harami only shows indecision after a downtrend; a Three Inside Up requires that indecision to be followed by a bar that actually closes above the first candle's high before the pattern is complete.
How many bars does a Three Inside Up need?
Exactly three: a long bearish candle, a small body contained within that candle's range, and a third bar that closes above the first bar's high. Stopping the count at two bars only identifies a Bullish Harami, not a Three Inside Up.
What's the difference between Three Inside Up and Three Outside Up?
Three Inside Up is built on a Bullish Harami as its first two bars, where the second candle's body is contained within the first. Three Outside Up is built on a Bullish Engulfing pattern instead, where the second candle's body engulfs the first. Both add a confirming third bar.
Does Three Inside Up appear only after a downtrend?
The pattern is defined as a bullish reversal signal appearing after a downtrend. The same three-bar shape forming elsewhere doesn't carry the same reversal implication, since there's no prior downtrend for it to reverse.
What price must the third candle exceed?
The high of the second candle at minimum, and under stricter definitions the close or the high of the first candle. The three thresholds differ considerably in how hard they are to clear after a small contained bar. Which one an implementation uses determines the completion rate, and it is the most consequential undocumented choice in this pattern.
Does the second candle need to be the opposite colour to the first?
The classical harami expects it, so a small bullish candle inside a large bearish one. Many implementations accept either colour provided the containment holds. The relaxed version admits cases where both candles closed lower, which is a weaker basis for the bullish reading since nothing in the two bars indicates buying appeared.
How many separate tolerances does this pattern carry?
At least two: how containment is measured on the second bar, and what the third bar must exceed. Some implementations add a third by requiring a minimum size on the first candle. Each tolerance multiplies the divergence between platforms, which is why three-bar patterns are identified less consistently than single-bar ones.
Does three inside up work on intraday charts?
Yes, since none of its conditions requires a gap. Containment and a confirming close are equally computable on a five-minute chart as on a daily one. What changes is what the pattern summarises: a three-bar structure on an intraday chart describes minutes of trading, and its statistical behaviour will not match anything established on daily data.
References
- CMT Association: Technical Analysis Body of Knowledge and Research
- CFA Institute Research and Policy Center: Investment Research
- Steve Nison, Japanese Candlestick Charting Techniques (1991), the book credited with popularizing Japanese candlestick analysis in Western markets.
- SEC Investor.gov: Introduction to Investing