Direct Answer
An advance block is a three-bar pattern that appears during an uptrend and, on the surface, looks bullish: three consecutive rising green candles, much like the well-known Three White Soldiers pattern. What separates it from genuine strength is what's happening underneath, each successive candle in the sequence has a smaller body and/or a longer upper wick than the one before it.
Key Takeaways
- An advance block is a three-bar pattern in an uptrend that looks bullish on the surface, three consecutive rising green candles, similar to Three White Soldiers.
- Underneath that surface, momentum is weakening: each successive candle has a smaller body and/or a longer upper wick than the one before it.
- It's a bearish warning sign, not a confirmed reversal, buyers are struggling to push higher even though price is still nominally advancing.
- Confirmation typically requires the next bar to close below the first candle's high, or more conservatively below the second candle's low.
- Because all three candles close up, the pattern is easy to misread as continued strength unless the shrinking bodies and growing upper wicks are checked directly.
Advance Block Candlestick Pattern: Formation, Meaning, and Signals
An advance block is a three-candle bearish warning pattern that appears during an uptrend: three consecutive rising green candles that look bullish at first glance, but each candle has a progressively smaller body and/or longer upper wick than the last. That shrinking momentum, not the rising closes, is the real signal.
What Is an Advance Block?
An advance block is a three-bar pattern that appears during an uptrend and, on the surface, looks bullish: three consecutive rising green candles, much like the well-known Three White Soldiers pattern. What separates it from genuine strength is what's happening underneath, each successive candle in the sequence has a smaller body and/or a longer upper wick than the one before it.
That progression signals that buyers are struggling to push higher even as price nominally advances. The trend is still going up bar to bar, but the effort required to sustain it is visibly increasing, and the pattern reads as a warning that the uptrend's momentum is fading rather than continuing.
How an Advance Block Forms
The pattern requires three consecutive up-closing candles within an existing uptrend, the same basic shape as Three White Soldiers. What makes it an advance block rather than a continuation signal is the trend across those three bars: each candle's body gets smaller and/or its upper wick gets longer than the candle before it.
A shrinking body means the distance between open and close is narrowing bar to bar, even though the close is still higher than the prior close. A lengthening upper wick means price pushed further above the close before sellers stepped in and pulled it back down. Either signal on its own is a hint; seeing both develop across the three-bar sequence is what marks a textbook advance block.
Advance Block Example
The chart below shows a deterministic, illustrative example: an uptrend leading in, three rising candles with shrinking bodies and growing upper wicks forming the advance block, then two possible continuations, a confirmation (price breaks down as the warning suggests) and a failure/look-alike (the uptrend simply continues). Toggle between them to see why the three up-closes alone don't decide the outcome.
How to Trade an Advance Block
Read it as a warning, not a signal to sell
An advance block flags weakening momentum inside an uptrend, it doesn't by itself mean the trend has reversed. Because all three candles still close higher, it's easy to mistake continued upward closes for continued strength. The shrinking bodies and growing upper wicks across the three bars are the real signal, not the fact that price closed up each time.
Wait for confirmation
Confirmation of the bearish warning means the next bar closes below the first candle's high, or, for a more conservative entry, below the second candle's low. Traders who act on the advance block itself, before that confirmation prints, are trading a warning sign as if it were a completed reversal.
Pick a confirmation level deliberately
Using the first candle's high as the confirmation level triggers sooner but tolerates more noise; using the second candle's low is more conservative and waits for a deeper break before acting. Neither is inherently correct, the choice is about how much confirmation a trader wants before treating the warning as actionable.
Common Advance Block Mistakes
- Reading three rising green candles as automatically bullish, without checking body size and wick length trend across the three bars, an advance block looks identical to genuine continued strength.
- Confusing it with genuine Three White Soldiers, Three White Soldiers shows steady or expanding bodies across the three candles; an advance block shows the opposite, shrinking bodies with growing upper wicks.
- Acting before the reversal actually confirms, the pattern itself is a warning about fading momentum, not a completed signal; entering before the next bar closes below the confirmation level skips that check.
- Ignoring the uptrend context, the pattern's bearish reading only makes sense as the tail end of an existing uptrend, not as a standalone three-bar shape anywhere on the chart.
Advance Block vs. Similar Patterns
| Pattern | Body/wick trend across the three bars | Key difference from an advance block |
|---|---|---|
| Advance Block | Rising bodies, each smaller with longer upper wicks | Baseline, weakening momentum despite three up-closes |
| Three White Soldiers | Rising bodies, similar or expanding size | Strengthening momentum, not weakening, the bullish counterpart |
| Stalled Pattern | Similar exhaustion concept | The third candle specifically is small and near the top of the prior candle's range, rather than a gradual shrink across all three bars |
Limitations of the Advance Block Pattern
An advance block describes a change in the shape of three candles, not the cause behind it. It doesn't tell a trader why buyers are struggling, whether it's profit-taking, an approaching resistance level, or fading volume, and it carries no information about volume or order flow on its own. It also doesn't guarantee a reversal: an uptrend can absorb a warning like this and continue, which is why confirmation matters. Like any multi-bar pattern, it's best used alongside trend context, nearby support/resistance, and a defined confirmation level, not read in isolation.
A Warning With No Defined Threshold
The pattern asks for each successive candle to have a smaller body or a longer upper wick than the one before, and nobody specifies how much smaller or how much longer. That leaves the identification to judgment, which matters more here than usual because the shape is otherwise identical to a bullish continuation pattern. The difference between the two is entirely a matter of degree, and the degree is undefined.
Which suggests measuring rather than eyeballing. Comparing the three body sizes as numbers, and the three upper shadows as fractions of their bars, takes a moment and turns an impression into something you could disagree with later.
The reading is a warning rather than a signal, and that framing is doing real work. It says an advance is losing force, not that it has ended, and there is no reversal bar anywhere in the pattern. Acting on it means acting on deceleration.
It also requires an established uptrend to be blocking. Three rising candles with shrinking bodies at the start of a move describe a rally finding its footing, which is a different situation entirely.
Advance Block FAQs
Is an advance block always a bearish reversal?
No. An advance block is a warning sign, not a guaranteed reversal. It flags that upward momentum is weakening even though price is still closing higher, the actual reversal only confirms if the next bar closes below the first candle's high or the second candle's low.
What's the difference between an advance block and Three White Soldiers?
Both show three consecutive rising green candles in an uptrend. Three White Soldiers has steady or expanding bodies, signaling strengthening momentum. An advance block has progressively smaller bodies and longer upper wicks across the three bars, signaling weakening momentum instead.
How is an advance block different from a stalled pattern?
Both describe fading momentum after three rising candles. An advance block shows a gradual shrinking of bodies and growing upper wicks across all three bars. A stalled pattern is more specific: the third candle alone is small and sits near the top of the prior candle's range.
Why is an advance block easy to miss?
Because all three candles still close higher, the pattern looks like ordinary bullish continuation at a glance. The bearish warning is only visible when a trader compares body size and upper wick length across the three bars rather than just checking that each one closed up.
Does an advance block need confirmation before acting on it?
Yes. The pattern itself only shows weakening momentum inside an uptrend. Traders typically wait for the next bar to close below the first candle's high, or more conservatively below the second candle's low, before treating the reversal as confirmed.
How much smaller does each body have to be?
No fixed proportion is specified in the classical description, which says only that the bodies shrink progressively. Coded definitions have to pick a threshold, commonly requiring each body to be some fraction of the one before. That choice determines how many instances exist, and it is why an advance block found by one scanner is frequently absent from another running the same nominal pattern.
Does volume behave characteristically during an advance block?
The traditional reading expects volume to fade alongside the shrinking bodies, on the reasoning that the advance is losing participation. That is the description rather than a requirement, and advance blocks form on flat and rising volume too. Checking whether the volume story matches the price story is worthwhile precisely because the pattern is about weakening momentum, which volume can either corroborate or contradict.
How is the preceding uptrend actually established?
The pattern is only meaningful after an advance, and nothing in the three bars establishes that an advance happened. The trend has to come from elsewhere: a structural read of prior swing highs, a moving average, or a defined lookback return. Two analysts using different trend criteria will disagree about whether the same three bars constitute an advance block at all.
Can an advance block be identified on a Heikin-Ashi chart?
The shape appears more often and means something different. Heikin-Ashi bodies are averages, and their sizes shrink as a move decelerates by construction, so a sequence of three progressively smaller bodies is a routine feature of the smoothed series rather than an observation about three real sessions. The pattern definition was written for actual open and close prices.
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