What Are Candlesticks?

Candlestick charts are the most popular way to visualize price data. Each "candle" shows how the price moved during a single time period — where it opened, where it closed, and how far it stretched in each direction. Candlesticks make it easy to see at a glance whether buyers or sellers were in control.

Anatomy of a Candlestick

Every candlestick has three parts:

• Body — the thick rectangular section between the Open and Close prices. If the Close is higher than the Open, the candle is bullish (green in Engulfy). If the Close is lower than the Open, the candle is bearish (red in Engulfy).
• Upper wick (shadow) — the thin line extending above the body, showing the highest price reached during the period. A long upper wick means sellers pushed the price back down from the highs.
• Lower wick (shadow) — the thin line extending below the body, showing the lowest price reached during the period. A long lower wick means buyers stepped in and pushed the price back up from the lows.

What Does a Candle Tell You?

The shape and size of a candlestick encodes a story about the battle between buyers and sellers:

• Long body, short wicks — one side dominated the period. A long green body means buyers were firmly in control. A long red body means sellers won decisively.
• Short body, long wicks — indecision. The price moved significantly in both directions but ended up near where it started. This often signals a potential reversal.
• No body (open ≈ close) — this is a Doji, a classic indecision pattern that can signal a turning point.
• No wicks (or very short wicks) — this is a Marubozu, meaning one side had total control from open to close with no pushback.

A Brief History

Candlestick charting originated in 18th-century Japan, where rice trader Munehisa Homma developed techniques to track price movements in the Dojima Rice Exchange in Osaka. Homma is often credited as the father of candlestick analysis, though the specific patterns we use today were likely refined over many generations of Japanese traders.

Candlestick charts were introduced to the Western world by Steve Nison in his 1991 book Japanese Candlestick Charting Techniques. Nison's work translated centuries of Japanese trading wisdom into a framework that Western traders could understand and apply. Today, candlestick charts are the default visualization in nearly every trading platform.

Bullish vs. Bearish

You'll see the terms "bullish" and "bearish" throughout Engulfy:

• Bullish — suggests the price may go up. Named after bulls because they attack by thrusting their horns upward.
• Bearish — suggests the price may go down. Named after bears because they attack by swiping their paws downward.

A bullish candlestick pattern is one that suggests buying pressure may be increasing. A bearish pattern suggests selling pressure may be increasing. Neither is a guarantee — they are signals to watch for, not automatic trading rules.

Single vs. Multi-Candle Patterns

Candlestick patterns come in different sizes:

• Single-candle patterns (Doji, Hammer, Marubozu, etc.) — the shape of one candle alone tells a story. These are the simplest to recognize.
• Two-candle patterns (Engulfing, Harami, Dark Cloud Cover, etc.) — the relationship between two consecutive candles creates the signal.
• Three-candle patterns (Morning Star, Evening Star, Three White Soldiers, etc.) — three candles form a recognizable sequence. These tend to be stronger signals because they show a full narrative: setup, transition, and confirmation.
• Multi-candle patterns (Rising Three Methods, Three Line Strike, etc.) — four or more candles that form continuation or reversal patterns.

Engulfy detects over 40 candlestick patterns across all these categories. Each pattern has its own education page with detailed explanations and detection criteria.

Pattern Quick Reference

Here's every candlestick pattern Engulfy tracks, grouped by how many candles form the pattern. Links will go live as each page is published.

Limitations to Keep in Mind

• Candlestick patterns are not predictions — they are observations about what happened in a specific time window. The next candle can always go the opposite direction.
• Patterns work best in context. A hammer at the bottom of a downtrend is meaningful. The same shape in the middle of a choppy range is often noise.
• Volume confirmation is important. A bullish engulfing pattern on high volume is far more credible than one on thin, low-volume trading.
• Academic research (notably Thomas Bulkowski's Encyclopedia of Candlestick Charts) shows that individual candlestick patterns have modest statistical reliability — typically in the 50-65% range. They are best used as one factor among many, not as standalone trading signals.