3.3.5Support, Resistance & Price Action

Understand swing highs and swing lows

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WHAT is a swing high / swing low?

The "fixed number of candles" is called the lookback / lookforward n (also called the strength or fractal size).

  • n=1n=1 → very sensitive, many minor swings (noise).
  • n=2n=2 or n=3n=3 → common on intraday/daily; filters noise.
  • Larger nn → only major structural turns.

HOW to derive/identify a swing point from scratch

We build the rule ourselves instead of memorising it.

  1. Goal: Detect where the direction of price flipped.
  2. Observation: A direction flip means the value was rising into candle ii and falling out of it (for a high). So ii must beat every candle immediately left AND right.
  3. Left side check: Hi>Hi1,Hi2,,HinH_i > H_{i-1}, H_{i-2}, \dots, H_{i-n} → price was climbing up to ii.
  4. Right side check: Hi>Hi+1,Hi+2,,Hi+nH_i > H_{i+1}, H_{i+2}, \dots, H_{i+n} → price fell away after ii.
  5. If both hold → ii is confirmed a swing high. (Swing low = mirror image with lows and <.)
Figure — Understand swing highs and swing lows

WHY swing points matter (the 80/20 core)

The 20% that gives 80% of the value:

  • Trend = sequence of swings.
    • Uptrend: Higher Highs (HH) and Higher Lows (HL).
    • Downtrend: Lower Highs (LH) and Lower Lows (LL).
    • Sideways: swings roughly equal.
  • Support/Resistance are drawn on swing points, not random prices. Prior swing highs → resistance; prior swing lows → support.
  • Break of Structure (BoS): when price closes beyond the last swing (e.g. breaks the prior swing high in an uptrend) → trend continuation.
  • Change of Character (CHoCH): first failure of the swing pattern (uptrend makes a Lower Low) → possible reversal.

Worked Examples


Forecast-then-Verify drill


Flashcards

What defines a swing high with strength n?
A candle whose high exceeds the highs of n candles on both its left and right.
What defines a swing low with strength n?
A candle whose low is below the lows of n candles on both its left and right.
Why is a swing high confirmed late in real time?
You need n candles to close to the right before both-side condition can be verified — a lag of n candles.
What swing pattern defines an uptrend?
Higher Highs and Higher Lows (HH + HL).
What swing pattern defines a downtrend?
Lower Highs and Lower Lows (LH + LL).
What is a Break of Structure (BoS)?
Price closing beyond the most recent swing in the trend direction — signals continuation.
What is a Change of Character (CHoCH)?
The first swing that breaks the existing pattern (e.g. a Lower Low in an uptrend) — hints at reversal.
How does swing strength n affect sensitivity?
Small n = many minor/noisy swings; large n = only major structural turns.
Where should support and resistance be drawn?
On prior swing lows (support) and prior swing highs (resistance), not arbitrary prices.
Why use strict inequality (> not ≥) for swing detection?
A flat/equal candle isn't a true directional turn; strict inequality avoids labelling pullbacks and plateaus as swings.

Recall Feynman: explain to a 12-year-old

Imagine you're drawing hills and valleys on paper by dotting where price stops going up and starts coming down (a hilltop) or stops going down and starts going up (a valley bottom). A hilltop is only a real hilltop if the ground is lower on both sides of it. Same for a valley. If each new hilltop and each new valley is higher than the last, you're walking uphill — that's an uptrend. The very first time a valley shows up lower than the one before, the hill is starting to slope back down. That's your early warning.

Connections

  • Support and Resistance — levels are drawn on swing points.
  • Trend Identification (HH-HL-LH-LL) — trend is the sequence of swings.
  • Break of Structure and CHoCH — swings define structure breaks.
  • Fractals and ZigZag Indicator — automated swing detection.
  • Candlestick Basics — highs/lows come from individual candles.
  • Pullbacks vs Reversals — distinguished by whether swing pattern holds.

Concept Map

turning points

peak, buyers exhausted

trough, sellers exhausted

H_i greater than neighbours

L_i less than neighbours

window size

larger n

small n

confirmed n candles later

ignoring it

sequence forms

sequence forms

HH and HL

LH and LL

Price zig-zags

Swing points

Swing High

Swing Low

Swing condition

Strength n

Only major turns

Noisy minor swings

Confirmation lag

Mistake: early entry

Trend structure

Uptrend

Downtrend

Hinglish (regional understanding)

Intuition Hinglish mein samjho

Dekho, market kabhi seedhi line mein nahi chalta — hamesha zig-zag karta hai. Har zig-zag ke top pe ek swing high banta hai (jahan buyers thak gaye aur price neeche mud gaya), aur har bottom pe swing low banta hai (jahan sellers thak gaye aur price upar mud gaya). Rule simple hai: ek candle swing high tab hai jab uska high apne left aur right ke n candles ke highs se zyada ho. Swing low ulta — low sabse neeche ho dono sides pe. Yeh n ko strength kehte hain: chhota n matlab bahut saare chhote noisy swings, bada n matlab sirf bade important turns.

Yeh cheez itni important kyun hai? Kyunki trend inhi swings se banta hai. Agar swing highs aur swing lows dono lagataar upar ja rahe hain (HH aur HL) to uptrend hai — seedhi si baat, buyers dabdaba bana rahe hain. Agar dono neeche ja rahe hain (LH aur LL) to downtrend. Support aur resistance bhi inhi purane swing points pe draw hote hain, random price pe nahi.

Ek important baat yaad rakho — real time mein swing high turant confirm nahi hota. Uske right side ke n candles close hone ke baad hi pata chalta hai. Isiliye thoda lag hota hai; isse respect karo, warna aap aisa peak pakad loge jise price straight tod dega. Aur jab pehli baar uptrend mein ek Lower Low ban jaye (pichhle swing low se neeche) — usse CHoCH kehte hain, matlab trend palatne ka pehla warning. Bas itna samajh lo to price action ka poora skeleton aapke haath mein aa jayega.

Test yourself — Support, Resistance & Price Action

Connections