Three Inside Up

Bullish Reversal Pattern
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What is Three Inside Up Pattern?

Three Inside Up is a bullish reversal candlestick pattern that signals a potential shift from a downtrend to an uptrend. It is a three-candle formation derived from the bullish Harami pattern and gains confirmation from the third candle. The pattern reflects weakening selling pressure followed by a gradual takeover by buyers.

Structure of the Pattern

The Three Inside Up pattern consists of three consecutive candles:

  • Candle 1: A strong bearish candle that continues the existing downtrend, reflecting strong selling pressure.
  • Candle 2: A smaller bullish candle that forms within the body of the first candle, indicating reduced selling momentum and early signs of buying interest.
  • Candle 3:** A strong bullish candle that closes above the high of the second candle, confirming the reversal.
Three Inside Up Structure
Pattern Structure

Key Conditions for Formation

  • The pattern must form after a clear and sustained downtrend.
  • The second candle must be completely contained within the body of the first candle (inside structure).
  • The third candle must be bullish and close above the high of the second candle.
  • The third candle should show strong momentum for confirmation.
  • The smaller size of the second candle indicates weakening bearish pressure.

Detailed Explanation

The Three Inside Up pattern represents a gradual shift in market control. The first candle shows strong bearish sentiment, where sellers dominate the market. The second candle, being smaller and contained within the first, signals that the selling pressure is weakening and buyers are starting to step in.

The third candle is the confirmation phase, where buyers gain strength and push the price higher, closing above the previous candle. This confirms the transition from a bearish to a bullish environment.

  • Second candle indicates indecision or reduced selling pressure.
  • Third candle confirms bullish reversal.
  • Pattern reliability increases with strong confirmation.
  • Often marks the beginning of a new uptrend.
Three Inside Up Chart Example
Chart Example

Market Psychology

This gradual shift makes the pattern reliable when confirmed properly.

The psychology behind the Three Inside Up pattern reflects a transition from selling dominance to buying control:

  • Sellers initially control the market (first candle).
  • The second candle shows hesitation and reduced selling strength.
  • Buyers begin absorbing selling pressure.
  • The third candle confirms that buyers have taken control.

Trade Interpretation

  • Entry: Traders typically enter a long position after the close of the third bullish candle.
  • Confirmation: A strong close above the second candle's high confirms the reversal.
  • Stop Loss: Usually placed below the low of the first candle.
  • Target: Targets are set based on resistance levels or trend reversal expectations.

Timeframe Relevance (Algo Context)

In a 5-minute timeframe environment:

  • The pattern forms over 3 candles (15 minutes total).
  • It becomes active after the third candle closes.
  • It remains valid for the next 1-2 candles
  • Quick confirmation is important due to short-term volatility.

Role of Volume

Volume supports the validity of the pattern:

  • Lower volume during the second candle indicates weakening selling pressure.
  • Increased volume during the third candle confirms strong buying interest.
  • Weak volume reduces reliability.

Using Indicators for Confirmation

To improve reliability, traders combine the Three Inside Up pattern with technical indicators:

  • RSI: Look for oversold conditions or bullish divergence.
  • MACD: Bullish crossover strengthens confirmation.
  • Volume: Increasing volume validates the move.

When to Avoid

  • In sideways or choppy markets
  • When the second candle is not clearly inside the first
  • When the third candle is weak or lacks momentum
  • When there is no prior downtrend

Precautions

  • Always wait for confirmation from the third candle.
  • Avoid relying solely on the pattern without context.
  • Combine with technical indicators for better accuracy.
  • Ensure proper trend identification before acting.

Related Patterns

  • Three Outside Up
  • Bullish Harami
  • Morning Star
  • Piercing Pattern

Practical Insights

In algorithm-based detection systems:

  • The pattern is identified using OHLC data across three candles.
  • Inside structure is validated using body range comparisons.
  • Confirmation requires the third candle to break the second candle's high.
  • Signals are activated after confirmation and expire within a short time window.
  • Duplicate signals are filtered within short intervals.

Example Scenario

Consider a stock in a downtrend where a large bearish candle is followed by a smaller bullish candle within its range. The next candle moves strongly upward and closes above the previous candle’s high. This indicates that sellers are losing control and buyers are taking over, creating a potential buying opportunity.

SUMMARY

  • Pattern Type: Bullish Reversal
  • Candles Required: 3
  • Key Signal: Inside candle + bullish breakout
  • Best Use Case: End of downtrend
  • Confirmation Needed: Yes
  • Reliability: Medium to High with strong confirmation