What makes a trend a trend, structurally?

With swing points defined, "trend" stops being a feeling and becomes something you can check with a list of numbers. This lesson makes the check mechanical — and then shows you exactly where the mechanics run out.

The sequence test

Write down your swing highs and swing lows in time order and read the sequence:

• Uptrend — each swing high is above the previous swing high, and each swing low is above the previous swing low. Higher highs and higher lows: HH / HL.
• Downtrend — lower highs and lower lows: LH / LL.
• Range — highs at similar levels, lows at similar levels. Neither sequence is advancing.

Both conditions matter. Higher highs with lower lows is not an uptrend — it is expanding volatility, a market disagreeing more violently in both directions. That combination is common around big news and it is frequently mislabelled by people who only track the highs.

A worked example

Illustrative swing points on a stock, in order:

Check the highs: 95 → 104 → 112, each higher. Check the lows: 80 → 88 → 97, each higher. This is a textbook uptrend structure, described in six numbers. Anyone can verify it; no interpretation required.

Now suppose the next swing low prints at $93 — below the prior swing low of $97. The HL sequence is broken for the first time in this run. The description is precise: the structure that had been in place since $80 no longer holds. That is all it is. It is not a prediction of a decline, not a signal, and not a reason to do anything. Traders who follow structure will note that a lower low occurred, and many will start watching whether the next swing high stays under $112 — because that would complete a lower-high, lower-low pair.

Three things structure will not do for you

1. It will not tell you what comes next. Every downtrend in history began as an uptrend whose structure broke; so did countless brief pullbacks that resumed higher. The break is the same in both cases at the moment it happens.
2. It is timeframe-specific. The same instrument can show a clean weekly uptrend and a clean daily downtrend simultaneously. That is not a contradiction, and it gets its own lesson at the end of this unit.
3. It is only as objective as your swing rule. Change the swing setting and the sequence can change. Fix the rule first, then read.

Why write it as a table

Because the discipline of writing the numbers down defeats the eye's biggest weakness. Looking at a chart, you feel a trend. Writing "95, 104, 112 / 80, 88, 97" makes the claim falsifiable — and often enough to be worth the two minutes, you will find the sequence doesn't support the feeling you had. That's the value.

In the data

Many screens offer a trend as one number: a regression slope through the last n closes, or simply the change from one end of a window to the other. Drag the Measure tool across the whole year below and you get that kind of number.

It is not the same thing as structure. The sequence test reads an ordered list of turning points; a single figure collapses the window, so a clean staircase of higher highs and a flat stretch with one violent day in it can produce a similar number. It carries direction and steepness, and nothing about order.

Try it now

1. Read the six marked pivots off the schematic above, write them out as two sequences, and label the structure. Then take the last pullback on it and say, in numbers, how big it is next to the whole advance.
2. Now do it on prices nobody arranged. Using the swing rule you fixed last lesson, list the last three swing highs and three swing lows below — a Level at each keeps them on screen — and label the structure as one neutral sentence.

3. Do the same on Weekly bars. The BARS switch folds the dailies for you, and each weekly bar's high is the highest of that week's daily highs. If the two labels disagree, hold that thought until this unit's last lesson.