A hammer is a single candlestick with a small body at the top of its range and a lower wick at least twice the height of that body, appearing after a decline. The long lower wick shows that sellers pushed price well below the open during the session and that buyers took all of it back before the close. The body can be green or red; what defines the candle is the shape, not the colour.
The pattern is one of the most widely taught reversal signals in price action, and also one of the most widely misread. A hammer is not a buy signal. It is a record that one session's selling was rejected, and it only carries information when it appears in the right place โ at the end of a real decline, at a level that already mattered.
This page covers the exact proportions that qualify a candle as a hammer, how it differs from the three candles it is routinely confused with, what has to happen after it before the pattern means anything, and how it fails.
What the long lower wick actually records
Every candlestick is a summary of an auction. The open and close mark where trading started and finished; the wicks mark the extremes that were reached and then rejected.
On a hammer, price fell substantially below the open โ sometimes several times the body height โ and then returned. Sellers had control for part of the session and lost it. That could be because buyers stepped in with size, because sellers who drove price down took profits, or because a large resting order absorbed the supply. The candle does not tell you which, and it does not tell you whether the buying continues tomorrow.
That is the honest reading: a hammer is evidence that supply was exhausted at a particular price during a particular session. Everything else โ the entry, the stop, the target โ comes from context you have to supply yourself.
The conditions that qualify a hammer
Traders draw the lines slightly differently, but the commonly used tests are these. Measure them rather than eyeballing them; a candle that fails two of these is not a hammer, however much it looks like one.
| Criterion | Common threshold | Why it matters |
|---|---|---|
| Lower wick vs body | At least 2ร, often 3ร | This is the rejection; a short wick shows no meaningful reversal within the session |
| Upper wick | Small or absent, under about 10% of the range | A long upper wick means the close was also rejected, which is a different candle |
| Body position | In the upper third of the range | Price closed near the session high, not in the middle |
| Body size | Small relative to recent candles | A large body is a directional candle, not a rejection |
| Prior move | A visible decline of several candles | With no decline behind it, there is nothing to reverse |
The last row is the one most often skipped. A hammer-shaped candle inside a sideways range is a hammer only in geometry โ there was no established selling for buyers to reject, so the shape carries no information.
Hammer, inverted hammer, hanging man, shooting star
Four candles share nearly the same geometry and differ mainly in where they appear. Confusing them is the most common error with this pattern.
| Candle | Long wick | Appears after | Implies |
|---|---|---|---|
| Hammer | Lower | A decline | Selling rejected, possible bottom |
| Hanging man | Lower | An advance | Selling appeared during an uptrend, a warning |
| Inverted hammer | Upper | A decline | Buying attempted and faded, weaker bullish signal |
| Shooting star | Upper | An advance | Buying rejected, possible top |
A hammer and a hanging man are the same candle. The only thing separating them is the trend they sit in. If you find yourself arguing about which one you are looking at, the trend context is not clear enough to trade โ that ambiguity is itself the answer.
The gravestone doji sits in this family too: a long upper wick with almost no body, which is the shooting star taken to its extreme.
Location decides whether it is worth anything
A hammer at a random price in the middle of a move is noise. The same candle carries far more weight when it forms at a level that already had significance before the candle printed:
- A prior swing low, or the low of a range that has held more than once
- A level where a supply and demand zone was drawn from an earlier impulsive move
- The lower boundary of a channel the market has respected
- A round number that has produced reactions before
The discipline here is to mark the level first, then wait to see what prints there. Finding the hammer first and then looking for a reason it matters is how traders end up in weak setups.
Timeframe matters for the same reason. A hammer on a daily chart summarises a full session of two-sided trading; a hammer on a one-minute chart may summarise sixty seconds of thin liquidity. The higher the timeframe, the more participants are recorded in the candle.
Confirmation, entry and stop
The candle on its own is incomplete. Most approaches wait for the next candle to close above the hammer's high before treating the pattern as active โ that close is the evidence that buyers followed through rather than the wick being a single-session anomaly.
Entries commonly used:
- On the confirmation close. Simple, and the stop is furthest away.
- On a retracement into the hammer's body. Better position, but the retracement may not come.
- On a break of the hammer's high with a resting order. Mechanical, and exposed to a false break.
The stop belongs below the hammer's low, with a small buffer for spread and noise. That is not a preference; the low is the price at which the pattern's premise โ that selling was exhausted here โ has been shown to be wrong.
That stop placement is what determines your position size, and on a hammer it can be a wide stop, because the long wick is the whole point of the pattern. A candle with a 60-pip wick gives you a 65-pip stop once you add the buffer. Size the trade from that distance rather than from a lot size you had in mind, or the pattern's defining feature quietly becomes an oversized position. The lot size calculator does the arithmetic; for gold, where wicks of several dollars are ordinary, the XAU/USD stop loss calculator works in the units that instrument actually trades in.
How hammers fail
They fail often, and the failures have recognisable shapes.
No follow-through. The confirmation candle never closes above the hammer's high, and price grinds sideways before continuing down. Nothing was invalidated dramatically; the setup simply never activated. Waiting for confirmation costs you a better entry and saves you from this.
The wick gets revisited. Price takes out the hammer's low and then reverses higher. Your stop is hit on a move that eventually went your way. This is common enough that the buffer below the low matters, and it is a reason not to place stops exactly at obvious levels.
Continuation in a strong downtrend. In a persistent decline, hammers print repeatedly on the way down. Each one records a single session of rejected selling inside a trend that is still intact. This is why the pattern needs a level behind it โ a hammer with nothing structural underneath it is one session of noise in a market still going the other way.
Wrong candle. The shape was a hanging man in an uptrend, or an inverted hammer, and the trade was taken on a misread. Classify the candle against the table above before acting on it.
Anyone telling you how reliable the pattern is across markets is guessing. Reliability depends on the instrument, the timeframe, the trend context and the rules you use to confirm it โ which is precisely why it has to be measured on your own trades rather than taken from an article.
Making the pattern measurable
The way to find out whether hammers work for how you trade is to record them and look at the results, not to read another description of the candle.
Log every hammer trade with the timeframe, the level it formed at, whether you waited for confirmation, and the outcome in R rather than in currency. After thirty or forty of them you can answer questions no general article can: whether your confirmed entries beat your aggressive ones, whether daily hammers outperform intraday ones, whether the ones at prior swing lows carry the whole result. Fips's trading journal records trades in R and groups them by setup, and account analysis shows the distribution rather than the average, which is where the useful information sits.
If you want an answer before risking money, backtesting the rule on historical data gives you the sequence of results, including the worst losing streak โ the number that decides whether your risk per trade is survivable at all.
Frequently asked questions
Does the colour of a hammer matter?
A green hammer closes above its open and a red one closes below. Green is marginally more constructive because buyers finished the session in control, but the long lower wick is what defines the pattern. Do not reject a valid hammer because it is red.
How long does the lower wick have to be?
At least twice the body height is the usual minimum, and many traders require three times. What matters is that the wick is clearly the dominant part of the candle โ if you have to measure carefully to decide, it is probably not a strong example.
Do I always need a confirmation candle?
No, but skipping it changes what you are trading. Entering on the hammer's close gives a tighter stop and a worse hit rate; waiting for a close above the high gives a wider stop and filters out candles that never followed through. Both are defensible; pick one, apply it consistently, and measure the difference in your journal.
Is a hammer reliable on lower timeframes?
The geometry appears on every timeframe, but a five-minute hammer summarises far fewer participants than a daily one, and intraday charts produce many more of them. If you trade them intraday, tie them to a level from a higher timeframe rather than treating each one as a signal in itself.
What is the difference between a hammer and a doji?
A doji has almost no body at all โ the open and close are effectively equal โ and signals indecision rather than rejection. A hammer has a small but visible body near the top of its range and a long lower wick. A candle with no body and a long lower wick is usually called a dragonfly doji.