Direct Answer
Bullish Separating Lines is a two-bar pattern that shows up in the middle of an established uptrend. The first bar is a bearish candle, a brief counter-trend dip against the prevailing move, that opens at a specific price.
Key Takeaways
- Bullish Separating Lines is a two-bar continuation pattern that appears mid-uptrend, not at the start or end of a trend.
- The first bar is a bearish candle, a brief counter-trend dip, that opens at a specific price.
- The second bar is a long bullish candle that opens at that exact same price, then continues higher as if the dip never happened.
- The matching opening price between the two opposite-colored bars is the defining feature, not the closing prices.
- Because it's a continuation pattern, the trading implication is that the existing uptrend is expected to keep going, not reverse.
Bullish Separating Lines Candlestick Pattern: Formation, Meaning, and Signals
Bullish Separating Lines is a two-bar candlestick continuation pattern that appears mid-uptrend: a bearish dip bar is immediately followed by a long bullish bar that opens at the exact same price. It signals that the uptrend is likely to continue, treating the counter-trend dip as if it never happened.
What Is a Bullish Separating Lines?
Bullish Separating Lines is a two-bar pattern that shows up in the middle of an established uptrend. The first bar is a bearish candle, a brief counter-trend dip against the prevailing move, that opens at a specific price. The second bar opens at that exact same price but is a long bullish candle, and it continues the uptrend as if the counter-trend bar never happened.
The pattern is the mirror image of Bearish Separating Lines, which shows the same matching-open structure with the bar colors reversed, appearing mid-downtrend instead. In both cases, the pattern's role is to describe a brief interruption inside a trend that's expected to keep going, not a turning point.
How a Bullish Separating Lines Forms
The pattern forms across exactly two bars. The first bar is bearish and opens at a given price. This is the counter-trend dip within an uptrend that's otherwise intact. The second bar then opens at that exact same price as the first bar's open, but instead of continuing lower, it closes as a long bullish candle, resuming the direction the uptrend was already moving in.
The shared opening price is what separates this pattern from an ordinary two-bar sequence, it's the specific feature that gives the pattern its name and distinguishes it from patterns built around matching closes instead.
Bullish Separating Lines Example
The chart below shows a deterministic, illustrative example: an uptrend leading in, the bearish-then-bullish separating lines pair forming with a matching open, then two possible continuations, a confirmation (the uptrend keeps going) and a failure/look-alike (the dip extends instead). Toggle between them to see why the shared open doesn't guarantee the outcome on its own.
How to Trade a Bullish Separating Lines
Read it as continuation, not reversal
Because this is a continuation pattern, the trading implication is to expect the existing uptrend to keep going, not reverse. Traders who spot the pattern are reading it as confirmation that the prevailing trend remains intact, not as a signal that the market is about to turn.
Check the opening prices, not the closes
The shared opening price between the two opposite-colored bars is the defining feature of this pattern. Confirming a genuine Bullish Separating Lines means verifying that the second bar's open lines up with the first bar's open, checking the closes instead misses what actually defines the pattern.
Common Mistakes
- Treating the first bearish bar in isolation as a bearish signal, without recognizing it as the opening half of a two-bar continuation pattern, it looks like a warning sign rather than a brief pause.
- Checking the closing prices instead of the opening prices, the defining feature of this pattern is the matching OPEN price between the two bars, not the close.
- Reading the pattern as a reversal, it appears mid-trend as a continuation signal, not at trend extremes as a reversal signal.
Bullish Separating Lines vs. Similar Patterns
| Pattern | Matching price | Role |
|---|---|---|
| Bullish Separating Lines | Matching opens | Continuation of an uptrend |
| Bullish Counterattack | Matching closes | Reversal of a downtrend |
| Bearish Separating Lines | Matching opens | Continuation of a downtrend (mirror pattern) |
Limitations of the Bullish Separating Lines Pattern
Bullish Separating Lines describes the relationship between two bars' opening prices and colors, it does not tell you the size of the following move, the volume behind either bar, or why the counter-trend dip occurred in the first place. It only appears meaningful within the context of an already-established uptrend; the same two-bar shape outside that context carries no particular significance. Like any two-bar pattern, it works best combined with broader trend and volume context rather than traded in isolation.
Two Opens at the Same Price, Within What Tolerance
The definition asks the second bar to open at the same price as the first, and exact equality between two session opens is uncommon. So in practice this pattern lives or dies on a tolerance nobody specifies. Deciding how close counts, ideally as a small fraction of the bar range rather than an absolute figure, is what stops the pattern from being either impossible to find or available on demand.
The logic behind the shared open is worth holding onto. The first bar is a brief counter-trend dip; the second opens at the same price and runs the other way, which reads as the market declining to carry the dip forward. Everything the pattern claims rests on that single shared price.
It is a continuation pattern, which means it belongs mid-trend rather than at either end. The same two bars without an established uptrend around them describe a down session followed by an up session.
And two bars is thin evidence for a claim about a trend resuming. A close beyond the pattern in the trend direction is the natural confirmation, and the first bar low is the natural level at which the read stops applying.
Bullish Separating Lines FAQs
Is Bullish Separating Lines a reversal or continuation pattern?
It's a continuation pattern. It appears mid-uptrend and signals that the prevailing uptrend is likely to keep going, not reverse, the brief bearish dip is treated as a pause rather than a change in direction.
What actually defines a Bullish Separating Lines pattern?
The matching opening price between the two bars. The first bar is bearish and opens at a specific price; the second bar is a long bullish candle that opens at that exact same price. The shared open, not the close, is what separates the two bars into the named pattern.
What is the difference between Bullish Separating Lines and Bullish Counterattack?
Bullish Separating Lines is defined by matching opens and appears as a continuation within an uptrend. Bullish Counterattack is defined by matching closes and appears as a reversal at the end of a downtrend. They are structurally different patterns despite both being two-bar setups.
How does Bullish Separating Lines relate to Bearish Separating Lines?
They are mirror images of each other. Bearish Separating Lines is the same matching-open structure but appears mid-downtrend with the bar colors reversed, signaling that the downtrend is likely to continue.
What is a common mistake when identifying a Bullish Separating Lines pattern?
Reading the first bearish bar on its own as a bearish signal, without recognizing it as the first half of a two-bar continuation pattern. Another is checking the closing prices for a match instead of the opening prices, which is the feature that actually defines the pattern.
How exact does the opening-price match need to be?
Exact equality is what the classical description says and it is rare in instruments quoted to several decimal places. Every practical implementation allows a tolerance, usually a small fraction of the bar range or of average true range. That tolerance is the main driver of how often the pattern is found, and a strict version returns almost nothing outside coarse-tick markets.
How is this pattern specified for a scanner?
A bar counter to the prevailing uptrend, followed by a bar in the direction of the uptrend, with the two opens matching within a tolerance. Three conditions, one of which is the tolerance. It is a short specification, which means the pattern would fire often were it not for the opening-price match, and that single condition supplies nearly all of its selectivity.
Is there a target convention for this pattern?
None is attached. Separating lines is a continuation pattern, so the implied expectation is that the prior trend resumes, and the definition supplies no measurement that could be projected. Any objective used with it comes from other structure on the chart. Patterns without a defined height simply do not support the measured-move arithmetic that chart formations do.
Does tick size affect how often the opens match?
Substantially. Where the tick is a large fraction of price there are few possible opening prices, so two consecutive sessions opening at the same value is unremarkable and the pattern appears frequently without demonstrating anything. In a finely quoted instrument the same match is genuinely unusual. The pattern therefore means different things in instruments quoted at different granularities.
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