How to Read Stock Charts: Candlesticks, Trends, Support, Resistance and Volume

A stock chart plots price over time, and on a candlestick chart each candle shows the open, high, low and close for one period, such as a day or a week. Reading a chart comes down to three questions: which way is the trend, where have buyers and sellers stepped in before (support and resistance), and does trading volume confirm the move. A chart shows what has happened, not what will happen, so use it to plan entries, exits and risk rather than to predict.

Line, bar and candlestick charts

• A line chart joins the closing prices. It is clean and good for the big picture.
• A bar chart shows each period's open, high, low and close (OHLC).
• A candlestick chart shows the same four prices as a body and wicks, and is the most popular.

How to read a candle:

• The body runs from the open to the close. It is usually green (or hollow) when the close is above the open and red (or filled) when it is below.
• The wicks (or shadows) stretch to the period's high and low.

Choose the right timeframe

Daily charts suit swing and position traders, weekly charts suit investors, and intraday charts (5-minute, hourly) suit day traders. Always check one timeframe higher than the one you trade: a breakout on the daily chart that runs straight into resistance on the weekly chart is weaker than it looks.

Two settings that change what you see

• Adjusted prices. Charts should be adjusted for stock splits and, for total-return views, dividends. Unadjusted data shows a 4-for-1 split as a 75% crash (see dividends and buybacks).
• Log scale. On a linear scale, a move from $10 to $20 looks tiny next to a move from $100 to $110, although the first doubled your money and the second made 10%. A logarithmic scale shows equal percentage moves as equal heights, which is what matters for long-term charts.

Trends

• Uptrend: higher highs and higher lows.
• Downtrend: lower highs and lower lows.
• Range (sideways): price moves between roughly the same high and low.

Trends are easiest to see on a chart with moving averages, which you will add in moving averages and the golden cross.

Support and resistance

Support is a price zone where falling prices have repeatedly stopped because buyers stepped in. Resistance is a zone where rising prices have stalled because sellers appeared. They form because traders remember prices, leave orders at round numbers and previous turning points, and those who bought at a level often want to "get out even" when the price returns.

Practical rules:

1. Think in zones, not exact lines. $98-$100 is more realistic than $99.47.
2. Role reversal. Once resistance is clearly broken, it often acts as support on the next pullback, and broken support often becomes resistance.
3. Use closes. A daily close beyond a level means more than an intraday spike.
4. Higher timeframes matter more. A level visible on the weekly chart outweighs one on a 15-minute chart.

Volume

Volume is the number of shares traded in a period. It shows how much conviction is behind a move. Relative volume compares today's volume with an average, for example the last 50 days.

• A breakout on volume well above average suggests real demand.
• A rally on shrinking volume suggests fewer buyers are joining.
• Huge volume after a long fall can mark capitulation, when the last holders give up.

Breakouts and false breakouts

False breakouts are common, especially when the broad market is weak or volume is light. That is why every breakout trade needs a stop decided in advance and a position sized to it (see position sizing and stop-losses).

Candlestick patterns: use with care

Names such as "hammer", "doji" and "engulfing" describe single candles or pairs. They can help you see who controlled a session, but tests of single patterns on large US stocks have generally found little reliable edge on their own. Use them as context at important levels, not as signals by themselves.

Check the market, not just the stock

Most stocks move with the market. Before buying a breakout, check the trend of the S&P 500 and the market's breadth: how many stocks are rising with it. The DanioX stocks market page shows the share of the 100 largest US-listed companies trading above their 200-day moving average, a simple breadth measure.

A five-step chart routine

1. Weekly chart, log scale: what is the long-term trend?
2. Daily chart: higher highs and higher lows, or the opposite?
3. Mark the nearest support and resistance zones.
4. Check volume on the latest move.
5. Write the trade: entry, stop, target, size. If you cannot place a sensible stop, skip it.

Next: moving averages and the golden cross.