Technical Analysis Explained: How to Read a Stock Chart

By Silviu Vasilescu · Updated 1 August 2026 · 9 min read

A stock chart is not a forecast. It is a record of every transaction that has taken place — what price people agreed on, and how much stock changed hands at that price. Technical analysis is the practice of reading that record for evidence about what buyers and sellers are doing now, and then making a decision that has a defined cost if you are wrong.

That framing matters more than any individual technique, because it tells you what to expect. A chart cannot tell you what a company will earn next quarter. What it can tell you is whether demand for the shares is currently overwhelming supply, whether that has been true for a while, and roughly where the last group of buyers stepped in. Those are modest facts, and they are enough to build a method on.

1. What technical analysis actually claims

Strip away the vocabulary and technical analysis rests on one observation: price is set by people, people behave in patterns, and their behaviour leaves a trace. When a large fund needs to buy a million shares, it cannot do so in one order without moving the price against itself. It buys over days or weeks, absorbing supply, and that sustained absorption is visible — steady advances, shallow pullbacks, volume arriving on up days. Nobody announces it. The chart shows it anyway.

This is a claim about supply and demand, not about magic. It also has an honest limit. The trace is evidence, not proof; the same shape can appear when nothing is happening. So a technical method is never "this pattern means the stock will rise". It is closer to: "when this configuration appears, a move in this direction has happened often enough, and the point at which I would know I was wrong is close enough, that the trade is worth taking repeatedly."

The phrase "worth taking repeatedly" is doing the real work. No single reading is reliable. A method is a series of decisions whose average result is positive, which is why position sizing is not a footnote to chart reading but the thing that makes chart reading usable.

2. Reading a candlestick

Each candlestick summarises one period — a day, an hour, a week — using four numbers: where the period opened, where it closed, and the highest and lowest prices reached in between. The thick body spans open to close. The thin lines above and below, the wicks, reach to the high and the low. Convention colours the body one way when the close is above the open and another way when it is below, which is why a chart can be read at a glance.

The value is in the proportions. A long body with almost no wicks says one side controlled the entire period: price opened, moved in one direction, and closed near its extreme. A tiny body with long wicks on both sides says the opposite — buyers pushed up, sellers pushed down, and neither finished ahead. A long lower wick with a close near the high says sellers took price down during the period and buyers took all of it back before the close, which is a different story from a quiet drift up even though both candles close green.

One candle in isolation says very little. Read in sequence and against volume, candles describe the balance of pressure over time, and that sequence is what chart patterns are built from.

A price chart with the same information a trader reads from it: the sequence of candles, where price turned, and how much volume arrived at each turn.

3. Volume: the second half of every chart

Volume is the number of shares traded in the period. Beginners tend to ignore it, which discards half the information available, because price tells you what was agreed and volume tells you how much conviction was behind the agreement.

A breakout above a level that has held for months, on volume several times the recent average, is a different event from the same breakout on quiet volume. The first says a lot of stock changed hands at the new price — supply at that level has been consumed. The second says a handful of orders lifted a thin book, and the level was never really tested. Both look identical if you only watch price.

The most useful volume habit is comparative, not absolute: judge today against the average of the last fifty days on the same stock. Absolute share counts mean nothing across different companies. Relative volume means a great deal, and it is the cheapest confirmation filter available.

4. Trend, and why direction beats prediction

A trend is a sequence, not a line. An uptrend is a series of higher highs and higher lows: each advance takes price further than the last, and each pullback stops above where the previous one stopped. That structure is what you are identifying. Drawing a line under it is just a way of seeing it more easily.

Trend matters because it is the one thing on a chart with genuine persistence. Prices that have been rising have a mild tendency to keep rising, for reasons that are not mysterious: money flows toward performance, sellers who wanted out have already left, and the buyers holding the stock are not under pressure. This tendency is weak and it ends without warning — but a weak edge you can identify beats a strong prediction you cannot.

The practical consequence is that trading with the direction of the larger trend is easier than trading against it. Not more certain — easier. Your mistakes cost less, because a mistimed entry in an uptrend is often rescued by the trend continuing, while a well-timed entry against one has to be right immediately.

5. Support and resistance

Support is a price area where buying has previously been strong enough to stop a decline. Resistance is where selling has previously been strong enough to stop an advance. They are not properties of the price itself; they are memory. Someone bought at that level and is now watching it, or wanted to buy and missed, or sold and would like to be out of the rest.

This is why levels weaken with use. Each time price tests a level, some of the orders sitting there are filled and removed. A level tested once and respected is informative. A level tested five times is being worn away, and its eventual failure is normal rather than surprising. Treat levels as zones a few percent wide rather than exact prices — the crowd's memory is approximate, and exact lines invite stops placed exactly where everyone else placed theirs.

The most useful thing about a level is not that it predicts a turn. It is that it gives you a cheap place to be wrong. If you buy just above support, you know within a small distance whether your reasoning failed, and a small distance is what makes a sensible position size possible.

6. Timeframes, and choosing one

The same stock trends up on the weekly chart, sideways on the daily and down on the hourly, all at once, and none of those readings is wrong. They describe different horizons. Confusion between them is one of the most common self-inflicted problems in trading: an entry taken on an hourly signal, held with a weekly-chart mindset, exited on a five-minute panic.

Pick your decision timeframe from your life, not from the market. If you can look at charts once in the evening, the daily chart is your decision timeframe and positions will last days to weeks. A longer chart — weekly — provides context; a shorter one can refine an entry. But the decision belongs to one timeframe, and it should be written down.

Shorter timeframes are not more precise, they are noisier. Each smaller interval contains a larger proportion of random movement relative to the size of the moves you are trying to catch, and trading costs consume a larger share of every result.

7. Indicators: what they add and what they don't

Every indicator is arithmetic performed on price and volume. It contains no information that was not already in the chart; what it does is make one property easier to see consistently. That is genuinely useful, and it is the whole of the benefit.

A moving average is the mean closing price over the last N periods, redrawn each period. It smooths noise so the direction of the underlying drift is visible, and it lags by construction — a 200-day average cannot turn quickly, which is exactly why it is used for context rather than timing. A relative strength index compares the size of recent gains to recent losses on a 0–100 scale, describing how one-sided the last stretch has been. MACD subtracts one moving average from another, so it rises when short-term drift is outpacing long-term drift. Average true range measures the typical size of a period's range, which is how you translate "a stop that is not too tight" into a number.

Two mistakes account for most indicator disappointment. The first is treating a threshold as a signal — "RSI above 70 means sell" — when a strong uptrend can hold a high reading for weeks; the reading describes intensity, not exhaustion. The second is stacking indicators for confirmation when they are all computed from the same closing prices. Three momentum indicators agreeing is one opinion stated three times.

Two or three indicators measuring genuinely different things — direction, intensity, volatility — is a working toolkit. Adding a fourth of the same kind mostly adds confidence, which is the one thing a trader should be careful about acquiring cheaply.

8. What technical analysis cannot do

It cannot see events that have not happened. An earnings surprise, a regulatory decision, an acquisition — these arrive as gaps, and no configuration of candles anticipates them. Holding through a scheduled event is a decision to accept an outcome your analysis has no view on, and it should be made deliberately.

It cannot make a low-probability method profitable through better drawing. Traders who add tools after a losing streak are usually solving the wrong problem: the loss came from size or from abandoning the rules, not from insufficient analysis.

And it cannot be tested honestly in hindsight by eye. Looking at a chart and seeing where the pattern "would have worked" is not evidence — you already know how it ended. That is what written rules and a proper backtest are for, and the difference between the two habits is most of the difference between traders who improve and traders who accumulate opinions.

9. Where to go next

Chart reading on its own produces opinions. To produce decisions you need rules about entry, exit and size, which is the subject of the next two guides.

This guide is educational material about how markets and trading methods work. It is not financial advice and not a recommendation to buy or sell any security. Trading involves the risk of losing money, including more than you intended if you use leverage.