Technical analysis is the study of price and volume to make decisions about when to buy and sell. It does not care what a company does or how much it earns; it cares what the people trading it have been doing. This guide covers the handful of concepts that underpin almost everything else, and ends with the limitations that most introductions leave out.

Key takeaways

  • A candlestick shows four prices for a period: open, high, low, and close. Everything else on a chart is built from those.
  • The three most useful ideas are trend, support and resistance, and volume. Learn them before any indicator.
  • Indicators such as moving averages and RSI are calculations on past prices. They summarize; they do not predict.
  • Technical analysis is most useful for defining where you are wrong, which is what makes stop-losses and position sizing possible.

What technical analysis is (and is not)

Technical analysis rests on a simple premise: the price of a stock already reflects everything that market participants know and feel about it, and because people behave in recurring ways, price patterns tend to recur too. A technical analyst looks at a chart to answer practical questions: Is this stock trending or going sideways? Where have buyers and sellers stepped in before? Is the current move backed by conviction?

It is not fortune telling. A support level is not a floor the price cannot fall through; it is a place where buying has appeared before and may again. Think of technical analysis as a framework for making decisions with defined risk, not as a system that predicts the future. Its counterpart, fundamental analysis, asks what a company is worth; technical analysis asks what the price is doing.

Reading a candlestick chart

Most trading charts use candlesticks. Each candle summarizes one period, which could be a minute, an hour, a day, or a week, with four prices: the open, the high, the low, and the close.

Anatomy of a candlestick A bullish candle with the close above the open, and a bearish candle with the close below the open. Each has a thin wick marking the high and low and a thick body between the open and close. High Low Close Open Bullish (price rose) High Low Open Close Bearish (price fell) Body Wick
The thick body spans the open and close; the thin wicks (or shadows) mark the full high-to-low range. By convention a green or white candle closed higher than it opened; a red or black candle closed lower.

The shape of a candle tells a small story. A long body means decisive movement. A tiny body with long wicks (a "doji") means buyers and sellers fought to a draw. A long lower wick means the price was pushed down hard but recovered, a sign that buyers stepped in. Individual candles are weak signals on their own; they become useful in context, at a level or within a trend.

Timeframes

Each candle's period is the chart's timeframe. Day traders use 1-, 5-, or 15-minute charts; swing traders live on daily charts; position traders and investors look at weekly or monthly ones. The same stock can be in an uptrend on the weekly chart and a downtrend on the hourly chart at the same time. A common practice is to decide direction on a higher timeframe and time entries on a lower one. Pick the timeframe that matches your trading style and stick to it; switching timeframes to make a losing trade look better is a classic self-deception.

Trend: higher highs and higher lows

A trend is the general direction of price over your timeframe. The classic definition is simple:

  • An uptrend makes a sequence of higher highs and higher lows. Each pullback stops above the previous low, and each rally exceeds the previous high.
  • A downtrend makes lower highs and lower lows.
  • A range (or sideways market) makes roughly equal highs and lows, bouncing between two levels.

"The trend is your friend" is a cliché because it is statistically reasonable: trends persist more often than they reverse at any given moment. Most beginner-friendly strategies trade in the direction of the trend, buying pullbacks in an uptrend rather than trying to call the top.

Support and resistance

Support is a price level where falling prices have previously stopped and bounced, because buyers showed up. Resistance is a level where rising prices have previously stalled, because sellers showed up. These levels matter because traders remember them and act on them, which makes them partly self-fulfilling.

Support, resistance, and a breakout A price line bounces several times between a lower support level and an upper resistance level, then breaks above resistance and continues higher. Resistance Support Breakout
Price bounces between support and resistance several times, then breaks out above resistance. After a breakout, the old resistance level often acts as new support.

Three practical uses:

  • Entries: buy near support in an uptrend, or buy a breakout above resistance with volume.
  • Stops: place a stop-loss just below support. If support breaks, your reason for the trade is gone.
  • Targets: take profit near resistance, where selling has appeared before.

Levels are zones, not exact prices. A stock that bounced at $50.10, $49.85, and $50.30 has support "around $50," and placing a stop at $49.99 invites being stopped out by noise.

Volume: the conviction behind the move

Volume is the number of shares traded in a period, usually shown as bars under the price chart. It tells you how many participants backed a move. A breakout on volume twice the daily average is more likely to hold than one on thin volume. A rally on declining volume is running out of buyers. Volume does not tell you direction, but it tells you whether to trust the direction you see.

Moving averages

A moving average (MA) is the average closing price over the last N periods, redrawn each period so it forms a smooth line. The simple moving average (SMA) weights every day equally; the exponential moving average (EMA) weights recent days more, so it reacts faster.

Common settings on daily charts are the 20-day (short-term trend), 50-day (intermediate), and 200-day (long-term). Traders use them to:

  • Define trend: price above a rising 200-day MA is a long-term uptrend; below a falling one, a downtrend.
  • Find entries: pullbacks to a rising 20- or 50-day MA in an uptrend are a popular setup.
  • Spot regime changes: when the 50-day crosses above the 200-day it is called a golden cross; the reverse is a death cross. These lag badly, because they are built from old prices, but they are widely watched.

A moving average is a description of the past. It has no information about the future beyond the assumption that trends persist.

Momentum indicators: RSI and MACD

Indicators are calculations drawn in a separate panel under the chart. Two you will see everywhere:

  • Relative Strength Index (RSI) measures the speed of recent price changes on a scale of 0 to 100. Readings above 70 are conventionally called "overbought" and below 30 "oversold." Treat these as descriptions, not signals: strong trends can stay overbought for months. RSI is more useful for spotting divergence, where price makes a new high but RSI does not, suggesting momentum is fading.
  • MACD (moving average convergence divergence) tracks the gap between two EMAs and a signal line. Crossovers indicate shifts in short-term momentum. Like all MA-based tools, it lags.

One or two indicators, understood deeply, beat ten indicators glanced at. Every indicator on a chart is derived from the same price data; adding more does not add information, just confirmation bias.

A few patterns worth knowing

Chart patterns are recurring shapes formed by support, resistance, and trend. The most useful for beginners:

  • Breakout: price moves decisively above resistance (or below support), ideally on high volume.
  • Pullback: a short counter-trend move within a trend, offering an entry in the trend's direction at a better price.
  • Double top / double bottom: price tests the same level twice and fails, suggesting a reversal.
  • Head and shoulders: three peaks with the middle one highest, a classic (if often misidentified) topping pattern.

Patterns have modest predictive value at best. Their real use is in giving you a structure: a defined entry, a logical stop, and a reasonable target, which together make position sizing possible.

The limits of technical analysis

Be clear-eyed about what charts can and cannot do:

  • Patterns are easier to see in hindsight. On a historical chart, every breakout looks obvious. In real time, half of them fail.
  • It cannot see news. No chart pattern anticipates an earnings miss, a regulatory ruling, or a CEO resignation. Keep positions sized for surprises.
  • Everyone is looking at the same chart. Obvious levels attract both genuine orders and stop-hunting around them.
  • Backtests flatter. Any indicator can be tuned to look wonderful on past data. Out-of-sample results are what matter.

Used well, technical analysis is a risk management tool with a decision framework attached. Used badly, it is astrology with candlesticks. The difference is whether you treat each level as a place to define your risk, or as a promise about the future.

Frequently asked questions

Does technical analysis actually work?

Partially. Academic research finds some evidence that trends and momentum persist, which supports trend-following approaches, but little evidence that specific chart patterns reliably predict prices. The most defensible use of technical analysis is for defining entries, stops, and targets so that risk can be managed, rather than for prediction.

What is the best indicator for beginners?

Start with no indicators at all and learn to read trend, support and resistance, and volume directly from price. If you add one, a simple moving average (such as the 50-day) is enough to define the trend. More indicators do not add information; they are all derived from the same prices.

What timeframe should I use?

Match it to your holding period. Swing traders use daily charts, day traders use 5- to 15-minute charts, and position traders use weekly charts. Beginners are usually best served by daily charts, which have less noise and allow decisions after the market closes.

What is the difference between support and resistance?

Support is a price level below the current price where buying has previously stopped a decline. Resistance is a level above the current price where selling has previously stopped a rally. When price breaks through one, the level often flips roles: broken resistance becomes support and vice versa.

Can I use technical analysis for long-term investing?

Some investors use it to time entries into stocks they have chosen for fundamental reasons, for example waiting for a pullback or a confirmed uptrend. For a diversified, decades-long investor, the benefit is small and the risk of overtrading is real.