Swing points: where the chart turned

The previous lesson used "swing high" and "swing low" as though they were obvious. On a clean chart they are. On a messy one, two traders will argue about which wiggles count. This lesson gives you a rule for identifying swing points so that you can be consistent, and explains why those points matter more than any other spot on the chart.

A rule for swing points

A swing high is a candle whose high is higher than the highs of the candles on both sides of it. A swing low is a candle whose low is lower than the lows on both sides.

The simplest version uses one candle either side. That catches every tiny wobble, which is too much noise. A more useful version uses two or three candles on each side:

 Swing high (3 candles each side): candle 4's high is above candles 1-3 and 5-7

            |
          +---+
     |    |   |    |
   +---+  |   |  +---+
   |   |  |   |  |   |     |
 +---+ |  +---+  | +---+ +---+
 |   | |    |    | |   | |   |
 +---+ +---+     +---+ +---+
   1    2    3    4    5    6    7
                  ^
              swing high

The number of candles is a knob. Fewer catches more swings and makes the structure noisier. More catches only the important turns. For a daily chart, three either side is a decent default. For lower timeframes you may want more. Pick one and stick with it, at least while learning, so that your "uptrend" today means the same thing as your "uptrend" next week.

Why swing points matter

A swing point is a place where price tried to go further and could not. That means:

• At a swing high, buyers were exhausted or sellers stepped in. Whoever bought there is holding the worst price of the move.
• At a swing low, sellers were exhausted or buyers stepped in. Whoever sold there is holding the worst price of the move.

Both groups remember. A swing high becomes a reference: if price returns there, trapped buyers may sell to get out flat, and new sellers may join them because "it failed here last time." A swing low becomes a reference for the same reasons in reverse.

Swing points are where the trend definition lives (previous lesson), where support and resistance come from (next module), and where most sensible stops go (Risk Management course). Almost everything on a chart hangs off them.

Key idea: A swing point is where price turned. It records exhaustion and traps traders at the extreme. Trends are defined by them, levels are built on them, and stops go beyond them.

Marking swings in a table

Practice with OHLC data, because it forces you to use a rule instead of squinting. Ten daily candles:

Using two candles either side: day 3's high of 72.8 is above days 1, 2, 4 and 5. Swing high at 72.8. Day 6's low of 69.1 is below days 4, 5, 7 and 8. Swing low at 69.1. Day 9's high of 74.1 is above days 7, 8 and 10; we cannot confirm it yet because day 11 has not happened. It is a provisional swing high.

So far: swing high 72.8, swing low 69.1, then a higher high at 74.1. If the next pullback holds above 69.1, we have the beginning of an uptrend structure.

Swing points take time to confirm

Notice the provisional part. Using three candles either side means a swing high is not confirmed until three more candles have closed. That is a delay you cannot escape. It is also why you should not chase the first candle that looks like a reversal: the swing does not exist yet.

Beginners find this frustrating. It feels like being late. But the alternative is guessing, and guessing costs more than waiting. The delay is the price of having a rule instead of a feeling.

Major and minor swings

On any chart there are big swings and small ones nested inside them. A three-month rally has a handful of major swing lows, and each leg of it has smaller swing lows within.

                         major high
                            /\
                     /\    /  \
                    /  \  /    \
             /\    /    \/      \
            /  \  /   minor      \
     /\    /    \/    lows        \
    /  \  /                        \
   /    \/                          \
  /   minor low
 /
/
major low

Which ones count depends on your timeframe and your holding period. A swing trader cares about the major ones on the daily chart. A day trader cares about the minor ones on the five-minute, but still wants to know where the daily major ones are because that is where the big orders sit.

When in doubt, zoom out until the chart looks simple, mark those swings first, then zoom back in.

Try it: Print or screenshot a daily chart with about sixty candles. Using two candles either side, mark every swing high and low with a dot. Then do it again with four candles either side. Compare. The second version should have far fewer dots and should show the structure more clearly.

Recap

• A swing high is a candle whose high exceeds the highs of N candles on each side; swing low is the mirror. Pick N and keep it consistent.
• Swing points mark exhaustion and trap traders at the extremes, which is why they become future reference levels.
• A swing is not confirmed until N candles have closed after it, so there is always a delay.
• Major swings on a higher timeframe matter more than minor ones; zoom out first.