Stock charts look intimidating at first — lines going up and down, colored bars, strange abbreviations. But once you understand the basics, they become a powerful tool for making informed investment decisions.
The Price Chart
The most basic chart shows price over time. The vertical axis is price, the horizontal axis is time. A line moving up means the stock price is increasing. Moving down means it is decreasing. You can view charts in different timeframes — one day, one week, one month, one year, or five years.
Candlestick Charts
Each candlestick represents one period of time — usually one day. A green or white candle means the price went up that day. The bottom of the body is the opening price and the top is the closing price. A red or black candle means the price went down. The thin lines above and below the body are called wicks or shadows — they show the highest and lowest prices of the day.
Volume
Volume bars at the bottom of the chart show how many shares were traded. High volume confirms strong interest in a price movement. A price increase on high volume is more significant than one on low volume. Unusual volume spikes often signal important events — earnings reports, news, or large institutional trades.
Moving Averages
A moving average smooths out daily price fluctuations to show the overall trend. The 50-day moving average shows the medium-term trend. The 200-day moving average shows the long-term trend. When the stock price is above its moving average, the trend is generally up. When below, the trend is generally down.
Key Numbers to Watch
Market Cap tells you the total value of the company. PE Ratio shows how much investors pay per dollar of earnings — higher means more expensive. Dividend Yield shows annual dividends as a percentage of stock price. 52-Week High and Low show the price range over the past year.
One Important Rule
Charts show the past, not the future. A stock that went up for six months can go down tomorrow. Use charts to understand trends and make informed decisions, but never assume past performance guarantees future results.