Hammer

The Hammer is a single-candle pattern defined by its shape: a small real body near the top of the range, a long lower shadow, at least about twice the body (the classic rule of thumb), and little to no upper shadow. That ratio names the shape; the candle's range against a normal day says how far sellers got (see the Takuri Line guide).

One requirement is part of the definition, not a suggestion: the shape only counts as a Hammer after a decline. The identical candle after an uptrend is a different pattern — the bearish Hanging Man — covered in the lookalikes section below.

The name comes from exactly what it looks like: a small head sitting on a long handle, like a hammer striking the ground. The metaphor fits — the market is trying to hammer out a bottom.

Every candlestick is a compressed story. The Hammer's story is about a power shift that happens in a single session. Here's what's actually going on:

Here's what many traders get wrong: the Hammer doesn't mean buyers have taken over. It means bears lost their grip — for one session. That's the first crack in a downtrend, not the reversal itself.

Whether that crack turns into something bigger depends entirely on what happens next. Think of the Hammer as a question, not an answer: "Are sellers still in control?" The sessions that follow provide the answer.

Bullish — conditionally. A Hammer is a bullish reversal signal when it forms after a decline, and even then only once a later close above its high confirms it. The identical shape after an uptrend is the bearish Hanging Man. So the honest answer has three parts: right shape, right context, and follow-through — remove any one and you don't have a signal.

How reliable is it? We deliberately don't quote a win rate — published figures contradict each other, and any single number hides what differs from one Hammer to the next: context. A Hammer at real support, after a real downtrend, on real volume, with confirmation, is a different animal from the same shape floating mid-range. (One related read: when a Hammer forms as the middle candle of a Morning Star, traders often read the three-candle version as more complete.)

The Hammer has siblings that look almost identical but carry completely different messages. Confusing them is one of the most common mistakes in candlestick analysis. The difference isn't the shape — it's the context.

The Hanging Man is the same physical shape as the Hammer — long lower shadow, small body near the top — but it appears after an uptrend instead of a downtrend, and that flips the read entirely. Buyers had been in control, then sellers pushed price well down during the day, even though buyers took it back by the close. It's a bearish warning where the Hammer is a bullish reversal — same candle, opposite signal, context is everything.

The Dragonfly Doji is the one that trips people up the most. It looks almost identical to a Hammer — long lower shadow, close near the high — but the key difference is the body. A Hammer has a small but visible real body. A Dragonfly has essentially no body at all (open ≈ close ≈ high). Both signal sellers were rejected; the Hammer leans directional, the Dragonfly leans indecisive.

The Inverted Hammer is the mirror — same downtrend setup, but the long upper shadow signals buyers' first real attempt to overtake the sellers. The push didn't hold this session, but it's the first time bulls challenged the trend. It closes near its low, so it needs more proof: a later close above its high.

Put together, the whole family is a simple two-by-two: two shapes, two contexts, four names. Lower-wick shape after a decline = Hammer; after a rally = Hanging Man. Upper-wick shape after a decline = Inverted Hammer; after a rally = Shooting Star (the bearish mirror, covered on the Inverted Hammer page). Memorize the grid and you'll never mislabel one again. One more nuance: the Dragonfly Doji keeps its name after either trend, while the Hammer is a downtrend-only pattern by definition — though as a reversal signal the Dragonfly, too, wants a decline behind it.

One more relative of the Hammer itself: a Hammer whose lower shadow runs about three or more times its body is often called a Takuri Line. It trades the same way, but a bigger ratio is not automatically a bigger rejection: a tiny body can inflate it. Read the Takuri Line guide →

The Hammer is one of the most recognized patterns in trading — and one of the most misused. Here's the difference between how beginners trade it and how experienced traders trade it.

Four lenses help you read whether a Hammer is a real rejection or just a volatile candle: volume, structure, momentum, and the level it forms at. Each gets its own dedicated guide; this is the quick orientation.

Volume — was the rejection fought or drifted into? A Hammer on heavy volume means many shares changed hands as buyers defended the low — they absorbed the selling rather than letting it run. Traders also watch for heavy volume on the selloff that dries up as price recovers: sellers spent their effort and couldn't hold the low. A Hammer on light volume shows fewer traders took part. Read the Candlesticks + Volume guide →

Structure — where on the chart did the Hammer form? A Hammer at the 50-day or 200-day moving average, a Fibonacci retracement, or prior horizontal support is forming where buyers have shown up before — the location gives buyers a reason to defend it. A Hammer in empty space, far from any level, has no such reason behind it. Read the Candlesticks + Moving Averages guide →

Momentum — is selling stretched or just resting? A Hammer when RSI is below 30 shows selling stretched. A Hammer when RSI is mid-range shows selling not yet stretched, so the pattern has more to prove. Read the Candlesticks + RSI guide →

Levels — did the rejection happen where traders are watching? A Hammer in the Fibonacci golden pocket of a pullback is a rejection at the exact zone many traders expect a trend to resume — location and pattern telling the same story. The same Hammer between levels has no such backing. Read the Candlesticks + Fibonacci guide →

Here is a Hammer with the context this guide describes.

Before the Hammer. Rocket Lab ($RKLB) had run hard into a July 2025 peak near $51.85, then started grinding lower — lower highs, lower closes, steady distribution. By mid-August the stock had given back more than 20% from the high and was sitting right on the 50-day moving average.

The Hammer prints. Sellers pushed price below the 50-day MA intraday — the kind of break that usually triggers stops. But by the close, buyers had reclaimed nearly all of it. The candle settled near $40.69, leaving a long lower shadow stretching down through the MA. The break failed; the level held.

The next session. Price closed above the Hammer's high. That's the confirmation: buyers didn't just defend the low, they followed through. From there, the bounce ran back toward the prior peak over the following weeks.

Why this one was tradeable. Real downtrend (multi-week decline, not a two-day dip), structural level (50-day MA, the most-watched dynamic support), strong lower shadow (clean rejection through the MA and back), and next-session follow-through. Each check this guide describes was in place before the entry.

The Hammer is simple to identify and easy to misuse. The common errors are skipped steps, not misread shapes.

The Hammer is the market's way of saying: "Sellers tried. They failed."

It doesn't promise a reversal. It doesn't guarantee profits. What it does is mark the exact session where bearish momentum broke down — and that's valuable information.

When you see a Hammer after a clear decline, at a known support level, followed by a confirming close above its high — you're looking at a setup with its context in place. Not because the pattern is magic, but because the context lines up behind it. It can still fail, which is what the stop below the low is for.