How a candle forms - body, wick, meaning

Say a stock opens at ₹100 and closes at ₹105. A line chart draws a single dot at ₹105 and moves on. Clean, simple - and it just erased almost everything that happened.

Because during that same day, the stock might have crashed to ₹80, panicked its holders, then rallied all the way to ₹120 before settling back at ₹105. A line connecting closing dots shows none of that violence. It shows the outcome and hides the fight.

A candlestick exists to put the fight back in. It captures, in one small shape, not just where a session ended but how far it swung and who was winning at the bell. The question this module answers is simple and foundational: how do four numbers turn into a picture of one session's tug-of-war - and what, honestly, can that picture not tell you?

Every session - whether it is five minutes or a whole month - leaves behind exactly four prices worth recording. The OHLC: the Open (first trade), the High (furthest up it got), the Low (furthest down), and the Close (last trade). A line chart uses only the Close. A candlestick uses all four, and that is the whole reason it exists.

Those four numbers, drawn as a shape, let your eye read the balance of power at a glance. Did the stock finish above or below where it started? By how much? How far did it stray up and down before settling? Each of those questions is answered by a different part of the candle. You are not memorising shapes yet - you are learning to read a single session's fear and greed straight from its geometry.

That matters because a candlestick is the atom of almost everything later in this book. Every named single-candle shape, every two- and three-candle pattern, every classical chart formation is built out of these bodies and wicks. If you can read one candle honestly, the rest of the catalogue becomes a vocabulary rather than a mystery. And "honestly" is the operative word: a candle is a precise record of a finished fight, and the temptation this whole part of the book will keep resisting is to treat that record as a prediction of the next one.

A candlestick has two parts, and each answers a different question.

The real body is the thick rectangle between the open and the close. It answers who won, and by how much?

• If the close is above the open, the body is green (or hollow): buyers finished ahead on net.
• If the close is below the open, the body is red (or filled): sellers finished ahead.
• A long body means the winner dominated - a decisive session. A tiny body means neither side made real ground - a stalemate.

The wicks (also called shadows) are the thin lines poking above and below the body, reaching to the high and the low. They answer where did price go that it could not hold?

• A long upper wick means price was pushed up during the session and then rejected back down before the close - a failed rally.
• A long lower wick means price was driven down and then bought back up before the close - a failed sell-off.

Put those two readings together and any candle tells a small story. A green body with a long lower wick: sellers tried to push it down, buyers slammed it back and closed it up - buyers had the last word. A red body with a long upper wick: buyers tried to rally it, sellers crushed it back and closed it down - sellers had the last word. A candle with almost no body but two long wicks: both sides swung hard and neither finished ahead - pure indecision (the doji, which you will meet properly next module).

One more honest tell ties it together: where the close sits inside the day's range. A close in the top third of the high-to-low range means buyers ended in control, whatever happened in between; a close in the bottom third means sellers did; a close in the middle means neither finished decisively ahead. Read the body for the winner, the wicks for the failed attempts, and the close's position for who held the field at the end.

First, see a run of real candles and read each one from its geometry. illustrative

Walk it left to right. The first candle is a strong green body with small wicks - buyers in clear control. The third has a small body but a long lower wick - sellers pushed it down and buyers hauled most of it back. The fifth is nearly flat, open and close almost equal - a stalemate. The sixth is a big green body with a small lower wick - decisive buying. The last is a red body with a long upper wick - buyers reached up and were rejected. You did not need any pattern names to read those; you read the body, then the wicks, then who closed in control.

Now build your own and watch the reading change as you move the four prices.

A single candle hides the sequence of events. A long upper wick tells you price went up and came back - it does not tell you whether it spiked in the first five minutes and bled all day, or chopped for hours before a late surge and collapse. The four prices are recorded; the path between them is not.

A single candle cannot promise the next one. It records a finished battle, never the coming one. A huge green candle shows buyers won today, which nudges the odds toward continuation - but that is a nudge, not a lock. One strong session shifts the odds a little; it never settles what tomorrow does. If the very next day prints an equally huge red candle that erases the gain, the buyers' control was an illusion, and you should have been ready to change your mind.

A single candle in isolation means less than it seems. A big green candle in a healthy uptrend and the same candle in the middle of a long downtrend are the same shape carrying very different weight - the second is often just a relief bounce. Location on the larger chart changes what a candle is worth, which is exactly why the next modules keep returning to context.

And a candle says nothing about the company. It is a picture of price for one session - the crowd's behaviour, not the firm's cash, debt or quality. A candle is a mark on the map of price, never a statement about the business underneath. It helps with when something happened, never with what is worth owning.

A few habits reliably trip up beginners reading single candles.

1. Treating one big candle as a trend. Influencers zoom in on a single fat green candle and declare a stock is "breaking out" or "going to the moon." One session is a snapshot of a single fight, not the whole war - and a big green candle inside a downtrend is often just a short-squeeze.

2. Reading a story into the intraday path. Confidently narrating how the session "must have" unfolded from the candle alone. The candle holds four prices; the journey between them is invisible to it.

3. Colour-blindness to the wicks. Seeing a green body and stopping there, ignoring a long upper wick that says buyers were rejected at the top. The wicks often carry the more important half of the story.

4. Ignoring where the candle sits. Judging a candle's meaning without asking where it formed on the larger chart. The identical shape can be strength in one place and noise in another.