05/10/2021
Piercing Pattern
No. of Candlesticks in play- 2 (1st Bearish and the 2nd Bullish candle)
Occurrence- Rare candlestick pattern. This doesn’t occur often but is a powerful signal when it does appear.
Signal Strength- This is amongst one of the strongest signals for the end of a downtrend and the start of a potential rally.
How to identify? – At times this is a difficult candlestick to spot as it requires a more of a mathematical approach to determine its validity. This is a two candlestick bottom reversal pattern that occurs after a substantial downtrend price action. The first candle is normally a large bearish candle with high traded volume (i.e. a large body).
The second candle (Bullish) price opens below the prior sessions close.
However, by the end of the second candlestick session, the market closes by more than 50% of the previous candlestick session. You are probably thinking this is quite confusing but simple maths is required by working out the differences between open and close of the first candlestick session and then find the midway or price at 50% (best mark this with a horizontal line). Please see the illustration below for further clarification.

For a stronger signal, the bullish candlestick penetrates well beyond 50% of the previous day session. In the example above of the GBPUSD chart, the bullish (green) closes by only a mere 2 PIPS (Percentage in points) above the 50% mark of the previous bearish red candlestick. This is sufficient enough but has to close beyond the 50% level.
Many books and traders also consider that the second bullish candle should open below the low (the shadow) of the previous candlestick for it to give a stronger signal.