Why Candlestick Charts Exist

Once you accept that a candlestick is just a compressed record of one period of trading—a sort of "financial postcard"—the obvious next question is: how do you read the thing without hallucinating patterns that aren't there?

The answer starts with two parts: the body and the wick.

Almost everything a candle tells you comes from the relationship between those two. They are not decoration, and they are definitely not telling you the same story. Think of them as the "what happened" vs. the "what could have been."

The Anatomy, Briefly

A candlestick has a rectangular body and usually one or two thin lines extending from it. These are called wicks or shadows. I assume they’re called "shadows" because trading makes you feel like you’re constantly chasing something that isn't actually there.

• The Body: Represents the distance between the open and the close. It is the part of the move that actually stuck. Whatever chaos happened during the period, the body is the "final result"—the part that made it into the record books.

• The Wicks: Represent the extremes. The top is the highest price reached; the bottom is the lowest. The wicks show you where price went, realized it was a terrible mistake, and frantically retreated.

The Body Is the Conclusion

The body is the part most beginners read first. It tells you the net outcome.

A large body means price moved decisively from point A to point B. One side, buyers or sellers, was clearly in charge. A small body means price finished close to where it started, regardless of the emotional roller coaster that happened in between.

Think of the body as the conclusion of a paragraph. After all the frantic back-and-forth, here is where we actually ended up. If you only had time to glance at one thing on a candle, the body is the sensible choice. It’s the adult in the room.

The Wick Is the Argument

The wick, however, is where the drama lives.

It tells you about the part that didn't settle. It shows you the ground price tried to take and then immediately lost.

Imagine a candle with a long, spindly upper wick. That means price surged higher, buyers looked excited, and then—oops—sellers stepped in and shoved the price back down. The upper wick is the visual record of that rejection. It’s the market saying, "I tried, but I really shouldn't have."

A long lower wick is the same story in reverse: sellers tried to crash the party, got shut down, and retreated.

This is why wicks are behaviorally more interesting than the body. The body tells you who won the period. The wick tells you where the fight happened, which side got cocky, and who ultimately got embarrassed.

Reading the Two Together (The Proportions)

Real insight comes from the proportion between body and wick.

• Big Body, Small Wicks: A one-sided period. One side held total control, and the other side didn't even bother showing up to the fight.

• Small Body, Big Wicks on Both Sides: Total indecision. Price traveled a long way in both directions, couldn't find a reason to stay anywhere, and ended up exactly where it started. It’s the market version of someone pacing around their kitchen trying to decide what to have for dinner.

• Small Body, One Big Wick: The most behaviorally interesting. Price made a serious, aggressive attempt in one direction and was firmly, aggressively rejected. Something at that level mattered enough to push price back.

You don't need fancy pattern names yet. Just look at the proportions. Big body means conviction. Big wicks mean conflict. One big wick means rejection.

A Caution About Single Candles

One honest warning: A single candle is just one period.

It is incredibly tempting, once you learn this, to stare at a single wick and think you’ve discovered the secret to the universe. A long wick feels profound. A giant body feels like a signal.

Sometimes they are. But sometimes they are just what happens when a bored market decides to go for a walk.

Treat a single candle like a sentence, not the whole paragraph. It gives you a piece of the story—where price settled and where it was rejected—but it only becomes truly meaningful when you see where it sits relative to everything else.

For now, keep it simple. Look at a candle, read it honestly, and try not to look for "ghost faces" in the chart patterns. Get comfortable seeing those two things—body and wick—clearly, and the rest starts to feel a lot less like reading tea leaves.