Piercing Line Candlestick: Trade a Bullish Reversal

A piercing line is a two-candle bullish reversal pattern that forms after a decline: a large bearish candle is followed by a candle that opens below the prior low, then rallies to close above the midpoint of the first candle's body. It shows sellers pushed to a new low but buyers took back more than half of the prior drop.

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

Key takeaways

• A piercing line needs a bearish first candle, a second candle that opens below its low, and a close above the first body's midpoint but below its open.
• It is a bullish reversal signal only after a downtrend or at a support level; in the middle of a range it means little.
• A close deep into the first body and volume above average on the second candle both strengthen the signal.
• The usual entry is a break above the second candle's high, with the stop below its low.
• It is weaker than a bullish engulfing candle because it recovers only part of the prior drop, so confirmation matters.

What is the piercing line candlestick pattern?

The piercing line is a bullish two-candle reversal that shows buyers absorbing a bearish gap and recovering more than half of the first candle's real body. It is the bullish counterpart to dark cloud cover, which appears at the top of a rally.

What are the exact rules?

Candle 1: a clearly bearish candle with a meaningful real body that continues the downtrend. Little or no lower shadow is ideal.

Candle 2:

• Opens below the low of Candle 1 (a gap down).
• Closes above the midpoint of Candle 1's real body, calculated as (open + close) / 2.
• Closes below the open of Candle 1. A close above it makes the pattern a bullish engulfing instead.

A close at exactly the midpoint is borderline, and the deeper the penetration, the stronger the signal. On stocks, overnight gaps are common, but they are not guaranteed. In 24-hour markets or lower timeframes, many traders allow an open below Candle 1's close instead of its low.

Example with hypothetical numbers

A stock has fallen from $52 to $41 over two weeks. On Day 1 it opens at $41.00 and closes at $38.50, a $2.50 body with a midpoint of $39.75. On Day 2 it gaps down and opens at $37.80, then buyers push it to close at $40.60.

The close is above $39.75 and below $41.00, so the piercing line is valid. The penetration is ($40.60 - $38.50) / $2.50, or 84% of the first body.

How is a piercing line different from a bullish engulfing candle?

A piercing line recovers part of the first body, while a bullish engulfing candle covers the entire body. That makes engulfing the stronger signal.

Neither is a guarantee. Both need context.

What market context makes a piercing line more reliable?

A piercing line works best after a clear decline and at a level where buyers have defended before. Check four things:

1. A defined downtrend. A decline of at least 8% to 10% over several candles. A piercing line in a sideways chop is noise.
2. A support level. A prior swing low, a rising 50-day moving average, or a base boundary near the Candle 2 low adds weight. Volume profile can help locate high-volume nodes that act as support.
3. Oversold momentum. RSI below 30 to 35 at the low, as in the 2-period RSI strategy, suggests selling was stretched. A bullish divergence on RSI or MACD is even better; see bullish divergence.
4. Volume on Candle 2. Volume at least 1.5x the 50-day average on the second candle suggests real buying, not just a thin bounce.

How do you trade the piercing line?

Wait for the second candle to close, then trade the break above its high with a stop below its low. Do not anticipate the pattern mid-session, because Candle 2 can reverse before the close.

1. Confirm the close. The candle must close above the midpoint of Candle 1's body.
2. Set the entry. A buy stop just above Candle 2's high, or a close above it the next session. More conservative traders wait for a follow-through candle.
3. Place the stop. Below Candle 2's low, which is also the low of the pattern. Adding a small buffer, such as a fraction of the 14-day ATR, reduces the chance of a stop-out on a quick poke below. See where to place a stop loss in swing trading.
4. Define the target. The next resistance, such as the open of Candle 1 or the prior swing high, with a minimum of 2:1 reward:risk.
5. Manage the trade. Move the stop to breakeven after price clears the first target or a one-risk gain, and exit if price closes below the pattern low.

Worked example with hypothetical numbers

Using the example above: Candle 2 has a high of $40.90 and a low of $37.80.

• Entry: $41.00, a buy stop above the Candle 2 high
• Stop: $37.60, below the pattern low, risking $3.40 per share
• Target: $47.80, near the prior breakdown level, gaining $6.80 per share
• Reward:risk: 6.80 / 3.40 = 2:1
• Account: $25,000, risking 1% ($250)
• Position size: $250 / $3.40 is about 73 shares, roughly $2,993

The pattern is the reason to look. The stop distance determines the size. See risk-reward ratio in swing trading.

Why does the piercing line work?

The pattern shows a sentiment swing in two sessions. Sellers open the second day with momentum, gapping below the prior low and trapping late buyers underwater. Then demand appears, shorts who sold the gap cover, and the stock rallies through more than half of the previous drop. The failed gap is the key: the market tried lower prices and rejected them.

How deep should the penetration be?

Depth matters more than the label. As a rough guide:

• 50% to 60% of the first body: a minimum pass; wait for follow-through.
• 60% to 80%: a solid signal, especially at support.
• Above 80%: very strong, close to a bullish engulfing in feel.

What is the bearish mirror?

Dark cloud cover is the mirror: after a rally, a bullish candle is followed by one that opens above its high and closes below the midpoint of its body. Knowing the mirror helps you avoid taking a pattern in the wrong location, since both depend on context.

Example of a failed piercing line

A stock falls from $70 to $62 and prints a piercing line, closing at $63.40 after a gap to $60.90. You buy at $64.10 with a stop at $60.70. The next day, price gaps down on weak market news and closes at $60.40. The pattern appeared mid-decline with no support nearby and average volume, so there was little to defend the low. A loss of 1R, planned in advance, is the cost of a signal that did not work.

Common mistakes with the piercing line

• Trading it in the middle of a range. The pattern needs a preceding decline.
• Accepting a close below the midpoint. The pattern fails the strict rule.
• Ignoring the next candle. A bearish candle closing below the Candle 2 low cancels the signal.
• Entering without a stop. The stop belongs below the pattern low.
• Over-trusting it on low-volume stocks. Thin trading can produce misleading gaps.
• Ignoring the trend. A single reversal candle in a steep downtrend often leads only to a brief bounce.

How do you confirm a piercing line?

Confirmation reduces false signals at the cost of a slightly worse entry. Look for one of three things on the day after Candle 2: a close above the Candle 2 high, a higher low that holds above the Candle 2 low, or a rise in volume on an up day. If the next session closes below the Candle 2 low, the pattern has failed and the stop would normally have been hit. Checking the larger trend also helps, since a piercing line that forms inside a weekly uptrend is a pullback entry, not a counter-trend bet.

How does the piercing line compare with other bullish reversals?

The bottom line

The piercing line is a modest but useful two-candle bullish reversal: a gap down, a close above the midpoint of the prior body, and below its open. It earns its place at support after a decline, with volume behind the second candle. Treat it as a reason to look, not a reason to buy, wait for the break of its high, and put the stop below its low. Patterns fail, so manage risk and do your own research.

StockSetups scans about 12,300 US stocks and ETFs after the close and uses candlestick patterns, including piercing lines, as confirmation on chart-pattern setups, so you can see the candle next to the base or breakout it supports.