What it means
The advance block appears after a price rise, either within a broad uptrend or during a bounce inside a downtrend. It looks bullish at first glance because prices still close higher, but the pattern's message is that buyers are running out of power.
Three candles make successively smaller upward progress, and the second and third open within the previous candle's real body rather than gapping up. Long upper shadows on the later candles show sellers pushing prices back down from intraday highs.
The first candle is strongly bullish and reaches a new high. The second opens weaker than bulls expected, and the third opens weaker still, while overhead selling grows.
The pattern is the tired cousin of the three white soldiers. In that bullish pattern, three strong candles open within prior bodies and close near their highs; in the advance block, the same skeleton appears but the bodies shrink and the upper shadows lengthen, turning a sign of strength into a warning.
Confirmation matters more than the pattern itself. A fall below the third candle's body on the next session strengthens the reversal signal, while a close above the third candle's upper shadow cancels it and points to bullish continuation instead.
The pattern should never be traded alone, because position, trend context and volume decide whether it earns attention. Its real value for a manager watching a holding is discipline, not prediction: it marks a moment when an easy winning streak may be ending, which is a prompt to review a position rather than a command to sell.
Like all candlestick patterns, it describes recent behaviour, not destiny. Used with support levels and broader analysis it is a useful caution light; used in isolation it generates false alarms in strong trends that simply pause and resume.
In practice
Real-world examples.
Example
A share rallies for six weeks, then prints three candles with shrinking bodies and long upper wicks near its old high. A cautious trader tightens the stop-loss (a preset exit price that limits losses) instead of adding to the position. The trader still holds the shares, but with less exposure to a sharp reversal.
Example
During a bear-market bounce, an index forms an advance block at a known resistance zone (a price level where sellers have repeatedly appeared). The next day's drop below the third candle confirms the bounce has failed. An investor who was thinking of buying the dip waits instead.
Example
A commodity contract shows the same three-candle shape, but price then closes above the third candle's shadow, cancelling the signal. The uptrend resumes for another month. A trader who sold on the pattern alone misses the extra gain.
Formula
Calculation
Real body = Close - Open; Upper shadow = High - Close
Worked example. Three daily candles in an uptrend, with prices in dollars:
- Candle 1: open $100, high $111, close $110. Body = $10, upper shadow = $1.
- Candle 2: open $106 (inside candle 1's body of $100 to $110), high $117, close $113. Body = $7, upper shadow = $4.
- Candle 3: open $110 (inside candle 2's body of $106 to $113), high $119, close $114. Body = $4, upper shadow = $5.
- Bodies shrink from $10 to $7 to $4 while upper shadows lengthen from $1 to $4 to $5, so the shape qualifies.
- Confirmation: a next-session close below $110, the bottom of the third candle's body, strengthens the warning. A close above $119, the third candle's high, cancels it.Case study
Seen in the real world.
This case study is fictional and illustrative. A made-up treasury analyst at Corvane Logistics watches the company's hedge position in a fuel contract that has risen for a month. An advance block forms just below a two-year high, and she flags it to the treasurer as a reason to delay rolling the hedge for one session. The contract reverses the next day, closing below the third candle's body, and waiting saves the company two cents per litre on the roll.
On a quarterly volume of 5,000,000 litres, that is 5,000,000 x $0.02 = $100,000. The analyst's note makes clear that the pattern was one input among several, alongside the resistance level and falling volume. Had the contract closed above the third candle's high, she would have rolled the hedge at once and accepted the cost of the delay.
Watch out
Common mistakes.
- Selling the moment the third candle completes; the pattern warns, it does not confirm, and strong trends often continue straight through it, so wait for price to break the third candle's body.
- Ignoring the cancellation rule; a close above the third candle's upper shadow flips the reading to bullish continuation, and traders who miss this exit good positions early.
- Reading the shape without context; the same three candles in a quiet sideways market mean little, while at a major resistance level after a long rally they deserve real attention.
Questions
People also ask.
Is the advance block bullish or bearish?
Bearish in intent. Although every candle closes higher, the shrinking bodies and growing upper shadows show buying power fading, which warns of a possible reversal downward, especially after a long rise or at resistance.
How is an advance block different from three white soldiers?
Both have three rising candles opening inside prior bodies. Three white soldiers show large bodies and small shadows, signalling strength; the advance block shows shrinking bodies and long upper shadows, signalling exhaustion.
How reliable is the advance block pattern?
On its own, modest. Analysts treat it as a warning that needs confirmation from the next sessions, trend context and volume, and it can fail whenever a strong trend simply pauses and resumes.
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