Reversal Candlestick Pattern

What is a hammer candlestick pattern?

A hammer is a single candle with a small body near the top of its range and a long lower wick, forming after a decline and read as a possible sign sellers are losing control. Here is how to identify one, how it is typically traded, and what it does not tell you.

Illustration of a hammer candlestick forming after a decline, with the small-body long-lower-wick candle circled

What it is

A small body on top, a long lower wick underneath, after a decline

A hammer forms when price sells off hard during the session, then recovers to close near the open — a small body sitting near the top of the candle's range, a lower wick running at least twice the length of that body, and little to no upper wick. Sellers pushed price down. Buyers pushed most of it back before the close. It only counts as a hammer in context, though — the same shape after a rally or in the middle of a range is a different read entirely, which is why the pattern is classified by what came before it, not just its own outline.

01
Confirm it appears after a decline, not anywhere on the chart
A hammer needs a preceding downtrend to mean anything. The identical candle shape sitting inside a range or after an uptrend is not read the same way — in an uptrend that shape is called a hanging man instead, and it carries the opposite implication.
02
Measure the lower wick against the body
The lower wick should run at least roughly twice the length of the body. A shorter lower wick relative to the body is a weaker version of the pattern, closer to an ordinary small-bodied candle than a real hammer.
03
Check the upper wick is minimal
A hammer has little to no upper wick. A candle with the same long lower wick but a sizeable upper wick as well is a different formation — the point of a hammer is that price recovered almost all the way back to its high.
04
Body colour is secondary, not the deciding factor
A hammer can close green or red — what matters is the shape, not whether the close landed a tick above or below the open. Treating colour as the primary signal misses what the pattern is actually built on.

Reliability

How often a hammer actually leads to a bounce

On its own, a hammer is closer to a coin flip than a signal — sellers losing steam for one session doesn't guarantee buyers keep control the next. In Thomas Bulkowski's Encyclopedia of Candlestick Charts, a widely cited historical study of thousands of stock chart patterns, an unconfirmed hammer performs close to chance, while a hammer confirmed by a breakout above its high moved into the roughly 60% range. That gap between the raw shape and the confirmed version is exactly why the trading approach below treats the hammer as a prompt to watch, not a signal to act on the moment it prints.

Source: Thomas Bulkowski, Encyclopedia of Candlestick Charts

How it's traded

The hammer is a prompt to watch the next candle, not an entry on its own

A hammer shows sellers lost momentum during one session. It doesn't show buyers have taken control — that's a different claim, and the common approach waits for the next candle to close higher before treating the reversal as confirmed. A stop is typically placed below the hammer's low, since a move back through that level means the recovery the wick implied didn't hold. Volume gets checked too — a hammer on light volume carries less weight than one where the reversal shows up in size. Traded this way, the hammer is one input inside a two-candle read at a support level, not a standalone signal to buy the moment it prints.

Common mistakes

Buying the hammer's close before the next candle confirms anything

The most common mistake is entering as soon as the hammer forms, without waiting for the following candle to close higher — the hammer itself only shows the session recovered, not that the recovery continues. One wick does not undo a downtrend. A second mistake is spotting the shape without checking that it actually followed a decline; the same candle mid-range is not a hammer setup, it is a shape that happens to look like one. A third is confusing a hammer with a hanging man because both share the same outline — the difference is entirely about what preceded the candle, and mixing the two means reading a bearish signal as a bullish one or the reverse.

Worked example

A hammer forming at the end of a two-week slide

A hammer candle forming after a run of red candles, followed by a green candle closing higher, with the hammer's low marked as a stop reference — Illustrative diagram, not a real trade or live price data.

Say a stock has been sliding for two weeks. On one session it opens near the prior close, sells off hard intraday, then recovers to close only slightly below the open — a small body near the top of the range with a lower wick roughly three times the body's length. That's a hammer. A trader waiting for confirmation doesn't buy that close; they watch the next session. It opens higher and closes well above the hammer's high, and only then is the setup treated as confirmed, with a stop placed below the hammer's low — the level that, if broken, would erase the recovery the wick showed.

The same candle, read two different ways

Side-by-side comparison showing a hammer candle closing out a downtrend on the left and an identically shaped hanging man candle closing out an uptrend on the right — Illustrative diagram, not a real trade or live price data.

A hammer and a hanging man are built from the identical outline — small body near the top, long lower wick, little to no upper wick. What separates them is entirely what came before, not the candle itself. On the left, that shape closes out a decline and is read as a possible bullish reversal. On the right, the same shape closes out an advance and is read as a possible bearish reversal instead. Spotting the outline without checking the trend leading into it is the mix-up covered above — the candle's own shape never tells you which one you're looking at, only the candles before it do.

Hammer vs. the candles it gets confused with

	Hammer	Hanging Man	Inverted Hammer	Doji
Shape	Small body near top, long lower wick, little upper wick	Identical shape to a hammer	Small body near bottom, long upper wick, little lower wick	Open and close almost equal; wick length varies
Appears after	A decline	An advance	A decline	Either — it shows indecision, not a direction
Read as	Possible bullish reversal	Possible bearish reversal	Possible bullish reversal	Indecision; needs the next candle to lean either way
Confirmation needed	Next candle closes higher	Next candle closes lower	Next candle closes higher	Whichever direction the next candle actually takes

Limits

What a hammer does not tell you

It does not tell you the reversal will hold — plenty of hammers form and price continues lower within a candle or two, especially without a confirming close or a nearby support level backing it up. Hope is not confirmation. It does not tell you how far a resulting move runs; the pattern is about one session's shift in pressure, not a target. And because a rough two-to-one wick-to-body ratio is the only real threshold, borderline candles get labeled hammers inconsistently across different charting tools and traders, which makes strict rule-based counting of hammers somewhat judgment-dependent.

Test the hammer rule before you trade it

Spotting a small body and a long wick on a chart you already know the outcome of proves nothing. Traders Journal's backtesting steps through price history bar by bar, so you can mark every hammer and the candle that followed it, and record what actually happened next — including the ones that didn't hold.