How to Identify a Trend: Market Structure from Highs and Lows

A trend is defined by highs and lows

The most basic way to judge a trend on a chart is to look at where the highs and lows sit. As price rises and falls in turns, if each high is above the previous one and each low is above the previous one, it is called an uptrend; if the highs and lows both keep getting lower, it is a downtrend. When they do not stack up in one direction, for example when the highs rise while the lows fall, or when both stay at about the same level, the market is treated as ranging or as having no clear direction. This test uses nothing but price, so it works without any indicator, and it has the advantage of being easy to explain: you can show someone else exactly what you looked at to reach your conclusion.

• Uptrend: higher highs and higher lows
• Downtrend: lower highs and lower lows
• Anything else: ranging or no clear direction

How to pick swing highs and lows

To compare highs and lows, you first have to decide which bars count as highs. The usual definition is the swing. If a bar's high is above the highs of the N bars to its left and the N bars to its right, it is a swing high; if its low is below the lows of the N bars on each side, it is a swing low. With a small N, even minor wiggles register as highs and lows and the structure changes often; with a large N, only the peaks and troughs of the big waves remain. This N is what the Support & Resistance Finder calls 'swing strength', and you can choose 3, 5 or 8 (5 by default). On the same chart, changing N can change your read of the trend. Tools also differ slightly in how they handle neighboring bars with the same value.

Swings are always confirmed late

The definition of a swing includes the N bars to its right. So you can only know that a bar is a swing high after N more bars have closed and none of them has made a higher high. On a daily chart with N set to 5, a high is confirmed five days after the day it was made, and by then price has often come a fair way down from it. This is where the gap comes from: on a past chart the highs and lows stand out clearly, but in real time all you have is 'a bar that might be a high'.

Where the structure breaks

When you look at the structure of an uptrend, the reference price is the most recent swing low. A series of higher lows is half of what makes an uptrend, so if price closes below that low, the 'higher low' condition is broken. A case where only the wick dips below briefly and comes back is treated separately, and that difference is covered in the article on false breakouts. A broken structure does not immediately make a downtrend. To call it a downtrend, highs and lows have to keep falling together, and until then it fits the definition better to treat the market as having no clear direction. In a downtrend, turn everything upside down: a close above the most recent swing high plays the same role.

Each timeframe has its own trend

At the same moment, it is common for the daily chart to be in an uptrend while the 1-hour chart is in a downtrend. A move that is just one pullback on the daily chart can look, on the 1-hour chart, like a small downtrend in which highs and lows fall for several days. Neither view is wrong; they are looking at moves of different sizes. So when you talk about a trend, your meaning is only clear if you also say which timeframe you are using. How to read several timeframes together is covered in the multi-timeframe analysis article, and the Multi-Timeframe Trend Matrix gathers the trend on each timeframe, from the 15-minute chart to the weekly chart, in one table.

Indicators summarize the same structure in different ways

Most indicators that are said to show the trend are also summaries of how the highs and lows are moving, just done in different ways. A moving average pointing up means the average of recent prices is higher than before, and Supertrend sets the direction by whether the close crosses a trailing line placed a multiple of the ATR (Average True Range) away. Indicators have the advantage of fixed rules, so anyone who calculates them gets the same answer. But because they are calculated from past prices, they are late to report a change in direction, just like swings.

• Moving average slope: if the average is rising, it leans up
• Supertrend: the direction flips when the close crosses the trailing line
• Multi-Timeframe Trend Matrix: a score from −3 to +3 based on where the close, EMA20 and EMA50 sit and on the slope of the EMA20

Limits: judging a trend is not forecasting

A judgment based on highs and lows describes the shape so far; it does not tell you which way price will go next. When this course measured the daily bars of 10 coins on Binance (each from its Binance listing date to September 2026), of all 29,746 bars that had a close 20 bars later to compare with, the close 20 bars later was higher 50.4% of the time. The average return 20 bars later was +4.62%, but that figure was pulled up by a small number of large rallies; the median was +0.15%. This was not a test of trending stretches only, but it does mean that even over a period when prices rose a great deal, picking any day at random and looking 20 days ahead showed a gain only a little more than half the time. A trend judgment is a framework for deciding where to put a stop or which rules to use, not a guarantee that the trend will continue.