Charting

Stock trading dictionary: meaning, example and how traders use it.

Last updated: October 17, 2026

Definition: Charting is the practice of plotting a security's price and volume over time so traders and investors can see trends, support and resistance, and patterns that are hard to spot in a table of numbers.

How stock charting works

A chart places time on the horizontal axis and price on the vertical axis. Each point, bar or candle summarizes trading for one period, from one minute to one month. Most charts also show volume as bars beneath the price, because the number of shares traded helps confirm whether a move has broad participation.

Charting is the foundation of technical analysis, which studies price behavior itself rather than company financials. It is often used alongside fundamental analysis: fundamentals help decide what to buy, and charts help decide when.

Main chart types

  • Line chart: connects closing prices; clean and good for long-term views.
  • Bar chart: shows the open, high, low and close for each period.
  • Candlestick chart: the same OHLC data with colored bodies for quick reading.
  • Point and figure chart: plots only meaningful price changes and ignores time.

Scales matter too. A logarithmic scale shows equal percentage moves as equal distances, which is useful for long histories.

Choosing a time frame is part of the process. Intraday charts built from one-minute or five-minute bars suit active traders, daily charts suit swing traders who hold for days or weeks, and weekly or monthly charts help long-term investors see the major cycles in a stock. A useful habit is to start with the longest time frame, note the dominant direction and the major price levels, and only then zoom in. A setup that looks bullish on a five-minute chart can be fighting a strong downtrend on the weekly view.

Charting example

Suppose a stock has traded between $45 and $50 for three months. On a daily chart you draw a horizontal line at $45, where buyers repeatedly stepped in, and another at $50, where sellers capped rallies. If the stock then closes at $51.50 on volume twice its recent average, a chartist would describe that as a breakout above resistance and might watch whether $50 now acts as support on any pullback.

What traders look for on charts

  • The direction of the trend, often drawn with a trendline.
  • Support and resistance zones where price has reacted before.
  • Patterns such as bases, flags, and double tops.
  • Indicators like moving averages, relative strength and Bollinger Bands.

Software makes this faster; our charting software plots price, volume and common indicators.

Limitations of charting

Charts describe the past and offer probabilities, not certainties. Patterns can be interpreted differently by different analysts, and news such as earnings surprises can override any setup. Over-fitting, adding indicators until a chart seems to predict everything, is a common trap. Many traders keep charts simple, define risk with a stop level before entering, and test ideas on historical data before using real money.

Frequently asked questions

What is the best chart type for beginners?

Many beginners start with line charts for the big picture and then move to candlestick charts, which show the open, high, low and close for each period.

Does charting actually work?

Charting can help organize price information and manage risk, but it does not predict the future reliably. Results depend heavily on discipline and risk control.

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For information only, not investment advice. See the disclaimer.