Hammer Candlestick: How to Spot and Trade the Reversal

A hammer candlestick is a single candle with a small real body near the top of its range and a lower wick at least twice as long as the body, little or no upper wick, appearing after a decline. It shows sellers drove price down during the session but buyers pushed it back to close near the high, a sign of rejected lower prices.

This article is educational only, not financial advice. Candlestick patterns fail often, past performance does not guarantee future results, and every trade needs a stop.

Key takeaways

• A hammer has a lower wick at least 2x its body (3x or more is cleaner), a body in the upper third of the range, and a small or absent upper wick.
• Location decides the meaning: the same shape after a decline at support is a hammer; after a rally it is a hanging man.
• The most useful confirmations are a nearby support level, volume above the 20-day average, and a next-day close above the hammer's body or high.
• The usual stop goes just below the hammer's low; position size comes from the distance to that stop.
• A hammer in the middle of a range, on thin volume, or in a falling market fails often and should be skipped.

What does a hammer candlestick look like?

A hammer looks like a hammer: a small head on top of a long handle pointing down.

The criteria:

• Lower wick at least twice the length of the real body (the distance between open and close).
• Real body in the upper third of the candle's range.
• Upper wick small or absent.
• Color matters less than shape. A green body (close above open) is slightly more convincing, but a red body with a close near the high still qualifies.

For example, a stock opens at $42.00, falls to $39.50, and closes at $41.80, with a high of $42.05. The body is $0.20 and the lower wick is $2.30, more than eleven times the body. That is a textbook hammer.

What does a hammer tell you about buyers and sellers?

A hammer shows that lower prices were rejected. Sellers controlled the early session and pushed the stock down, but at some level buyers absorbed the selling and drove price back near the open. The long wick marks the price area where demand showed up.

This is why location is critical. A long lower wick in the middle of a choppy range is noise. The same wick on a test of a prior swing low after a decline is evidence of demand at that level.

Where does a hammer matter most?

A hammer matters most after a decline, at a level where buyers have shown up before. Look for these conditions, and skip the setup if you cannot find at least two:

1. A prior downtrend. The stock has fallen for several sessions or weeks, so there is something to reverse.
2. A defined support level. The wick's low touches a prior swing low, a round number, a rising moving average or a gap. Support and resistance levels give the setup its logic.
3. Volume above average. Volume of 1.2x or more the 20-day average suggests real participation in the bounce. Relative Volume (RVOL) is a simple way to measure it.
4. Confirmation. The next session closes above the hammer's body or high.

How is a hammer different from a hanging man, inverted hammer and shooting star?

The shape alone does not decide the signal; the preceding trend does.

The inverted hammer needs more confirmation than the hammer, since its close is near the low:

For the topping versions, see The Hanging Man Candlestick and The Shooting Star Candlestick.

How should you use volume with a hammer?

Use it to judge whether the bounce had participation. A hammer on thin volume, well below the stock's average, means few traders were involved, so the reversal may be shallow. A hammer on volume 20-30% or more above the 20-day average, especially the heaviest of the recent decline, suggests more buyers took the other side of the selling.

How do you trade a hammer? A worked example

The trade has three parts: wait for a close above the hammer, buy with the stop below the wick, and aim for the next resistance or a 2:1 multiple.

Hypothetical numbers, using the hammer above (low $39.50, high $42.05, close $41.80), which touched a prior swing low at $39.60 on 1.6x average volume:

• Entry: $42.15, a buy-stop just above the hammer's high, triggered on the next session. This waits for buyers to follow through and avoids buying the hammer day itself.
• Stop: $39.30, just under the hammer's low. Risk is $2.85 per share.
• Target: $47.85 for 2:1, near a prior breakdown level and the 50-day average. If resistance sits only at $44, reward is $1.85, under 1:1, and the trade should be skipped.
• Position size: risking 1% of a $30,000 account ($300) allows 105 shares ($300 / $2.85). Let the stop set the size, not the reverse.

A more aggressive trader buys near the hammer's close if the bar finishes strongly, which gives a better price but no confirmation. The R-multiple logic is explained in Risk-Reward Ratio in Swing Trading, and stop options are compared in Where to Place a Stop Loss in Swing Trading.

Which patterns make good confirmation?

A large green candle that engulfs the hammer's body on the next day gives a two-bar reversal with more conviction. A close above the hammer's high is a simpler test. Multi-bar relatives that start with a rejection of lows include the Piercing Line, the Dragonfly Doji and the Morning Doji Star.

Why do hammers fail?

Hammers fail when the context is missing or buyers do not follow through.

• No prior downtrend. In a sideways range there is nothing to reverse.
• Arbitrary location. A hammer at a price with no prior significance has no support story.
• Thin volume. The bounce may be a low-liquidity blip.
• Weak market. In a broad selloff, many hammers fail within days.
• No confirmation. If the next day closes below the hammer's body or low, the pattern is invalid. Exit rather than hope.

Because the stop is below the hammer's low, a failed hammer has a small, planned cost. The mistake is moving the stop down afterward.

For the wider family of patterns, see the candlestick patterns guide.

Common mistakes

• Buying every long wick. A shape without a location is not a setup.
• Counting wick length by feel. Measure: the wick should be at least 2x the body.
• Buying before the bar closes. A bar that looks like a hammer at 2 p.m. can close as a different candle.
• Placing the stop above the low. The stop must sit below the hammer's low, or normal noise will trigger it.
• Ignoring the larger trend. Hammers in strong downtrends need more confirmation.

The bottom line

A hammer is a useful clue when a small body and long lower wick form after a decline, at support, ideally on above-average volume, and the next session confirms. It marks a defined stop below the wick, which makes the risk measurable, but it does not guarantee a bounce.

StockSetups detects hammers and other candlestick patterns, and uses them to confirm long chart-pattern setups across its four lanes (Setting up, Breaking out, Broke out, Retesting breakout). Its after-close scan of roughly 12,300 US stocks and ETFs helps find hammers sitting at support in names that are already building a base; paid plans add indicators, trade plans and a 0-100 conviction score.