Anatomy of a Candlestick
Every candlestick encodes four data points within a specific time interval: the opening price, the highest price reached, the lowest price reached, and the closing price. The colored "body" of the candle represents the range between open and close, while the thin lines extending above and below — called wicks or shadows — show the extremes that were tested and rejected.
A green (bullish) candle means the closing price was higher than the opening price, indicating net buying pressure during the period. A red (bearish) candle means the close was below the open, showing net selling pressure. This simple color distinction is the foundation of candlestick analysis, but the real depth lies in the proportions and context of each candle.
Understanding these four data points and how they relate to each other gives you a window into the battle between buyers and sellers during that specific time period. A single candle can tell a story of conviction, hesitation, reversal, or exhaustion — but only if you know how to read its structure.
Reading Candle Body Strength
The size of the candle body relative to recent candles is a measure of directional conviction. A large-bodied bullish candle that is significantly bigger than the previous few candles suggests strong buying interest — buyers are dominating the period with enough force to push prices meaningfully higher from open to close.
Conversely, a series of shrinking candle bodies — regardless of color — signals fading momentum. When bodies get progressively smaller, it often means the dominant side is losing conviction and the market may be approaching a turning point or entering a consolidation phase.
An important nuance: never evaluate a single candle's body in isolation. Compare it to the 5–10 candles preceding it. A "large" body on a 1-minute chart during dead-quiet Asian session trading might be smaller than a "small" body during the New York session. Context defines significance.
Interpreting Wick Behavior
Wicks represent prices that were tested and rejected during the candle's time period. A long upper wick on a candle means that buyers pushed price to a high point, but sellers responded with enough force to drive it back down before the close. This "rejection" of higher prices can signal overhead resistance or exhaustion of buying interest.
Similarly, a long lower wick shows that sellers pushed price down, but buyers defended the lower level and drove price back up. When long lower wicks appear at established support zones, they often indicate strong buying interest at that level — a signal that the support may hold for subsequent candles.
The most telling wick patterns occur near key price levels: support zones, resistance zones, round numbers, and previous swing highs or lows. A wick that probes a key level and snaps back carries more analytical weight than a wick that forms in the middle of an unremarkable price range.
Pay attention to the wick-to-body ratio. Candles where the wick is several times longer than the body suggest strong rejection and potential reversal energy. Candles where wicks are minimal relative to the body indicate clean, uncontested directional movement.
Key Candlestick Patterns for Prediction Markets
While there are dozens of named candlestick patterns, a few are particularly relevant for candle prediction markets. The Doji — where open and close are nearly identical, producing a tiny body — signals extreme indecision. On KeyCandle, Doji outcomes are resolved as losses for directional bets, so recognizing conditions that produce Dojis helps you avoid low-probability setups.
Engulfing patterns occur when a candle's body completely encompasses the previous candle's body. A bullish engulfing (green candle engulfing a red one) at a support level is one of the strongest signals of a potential directional shift. Bearish engulfing patterns serve the same function at resistance.
Hammer and inverted hammer patterns — candles with small bodies and long single wicks — are reversal indicators that work best when they appear after extended directional moves. A hammer (long lower wick, small body at the top) after a downtrend suggests buyers are stepping in aggressively at lower levels.
Remember: no pattern guarantees an outcome. Patterns increase the probability of a directional move, but they must always be evaluated within their broader market context — trend direction, key levels, and current volatility regime.
Reading Structure in Context
The most important principle of candlestick analysis is that context always outweighs the individual candle. A bullish candle at a major resistance zone during a downtrend is far less significant than the same candle pattern at a support zone during an uptrend. Location, trend, and market regime define how much weight any single candle deserves.
Before evaluating any candle structure, answer three contextual questions: (1) What is the prevailing trend on the higher timeframe? (2) Is the candle forming near a significant price level? (3) Is current volatility typical or abnormal for this asset and session?
When candle structure aligns with context — a bullish reversal pattern at strong support during an uptrend pullback, for example — the resulting signal carries meaningfully higher conviction than a pattern that forms in a contextual vacuum. This layered analysis is what separates informed prediction from coin-flipping.