Classical Chart Patterns

4.1 Formation vs completion — the most important distinction

A pattern forming is not a signal. Traders lose money entering "the head and shoulders that's setting up" only to watch it fail. A pattern is only tradable once it completes — meaning price breaks through the pattern's defining boundary with a confirming close.

4.2 Head & Shoulders and Inverse H&S

The most-recognised reversal pattern. A left shoulder forms at a swing high; the head prints a higher high; the right shoulder makes a lower high roughly symmetric to the left. A trendline drawn through the two intermediate lows is the neckline.

• Completion: close below the neckline (with volume expansion is ideal)
• Measured move: distance from head to neckline projected downward from the break
• Inverse H&S: mirror at a bottom — head is the lowest low, break above neckline is the signal
• Volume signature: declining volume through left shoulder → head → right shoulder. Volume expansion on the neckline break

Worked measured-move: Nifty forms an H&S with head at 25,500, neckline at 25,000. Distance = 500 points. Neckline break at 25,000 → measured target = 25,000 − 500 = 24,500. Set stop-loss above the right shoulder.

4.3 Double and Triple Tops / Bottoms

Simpler cousin of H&S. Two (or three) rejections at roughly the same price form a horizontal ceiling (top) or floor (bottom). The neckline is the intermediate reaction low (for tops) or high (for bottoms).

• Double top / bottom: two touches, second usually on lower volume (divergence). Neckline is the reaction extreme between the two touches
• Triple top / bottom: three touches — stronger structural level, larger measured move but rarer
• Measured move: pattern height projected from the neckline break
• Failure mode: if the second touch prints a HIGHER high (top) or LOWER low (bottom), the pattern is invalidated and it's often a strong continuation signal in the opposite direction

4.4 Triangles — the three variants

Consolidation between converging trendlines. All three signal a coming volatility expansion; direction differs.

• Triangles are only valid with at least 5 touches total across both trendlines. Fewer = you're pattern-matching noise
• Break before the apex is stronger than a break at or beyond the apex. Apex breaks are often exhausted moves
• Volume typically contracts through the triangle and expands on the break — that expansion is the confirmation

4.5 Flags and Pennants

Continuation patterns that form after a sharp move. The move up (or down) is the "flagpole"; the tight, orderly consolidation that follows is the flag (parallel channel) or pennant (small symmetrical triangle). Typical duration: 5–15 bars on daily chart, 20–60 bars on 15-min.

• Enter on the break in the direction of the flagpole
• Measured move: flagpole length projected from the breakout
• Failure: if the "flag" deepens beyond 50% of the flagpole retracement, the continuation thesis is dead — cut
• Volume signature: heavy on the flagpole, tapering through the flag, expanding on the break

4.6 Wedges — the counterintuitive pattern

Similar to a triangle but both trendlines slope in the SAME direction. Rising wedge (both lines rising, upper less steep) is bearish — the market is running out of momentum on the upside. Falling wedge is the mirror bullish pattern.

• Rising wedge: expect a break DOWN even though the pattern looks bullish. Common at tops of trends
• Falling wedge: expect a break UP even though it looks bearish. Common at bottoms of pullbacks in uptrends
• Wedges can be either reversal or continuation. Continuation wedges form during pullbacks in an established trend; reversal wedges form at trend extremes

4.7 Rectangles (trading ranges)

Horizontal support and resistance that price bounces between for an extended period. Not a completion pattern per se — the trade is inside the rectangle (fade the edges), and then a much larger trade on the eventual breakout.

• Buy near support, sell near resistance, until one side breaks
• Measured move on the break: rectangle height projected in the breakout direction
• Continuation direction: statistically ~65% in the direction of the prior trend before the range formed

4.8 Cup and Handle

Bullish continuation pattern. A rounded "cup" (U-shape) forms over weeks or months, followed by a smaller downward "handle" consolidation. Break above the handle's high is the entry.

• Handle should retrace no more than 30–50% of the cup's depth
• Cup depth ideally 15–30% of the prior uptrend — deeper cups have lower success rate
• Measured move: cup depth projected from the handle break

4.9 Rounding Top / Rounding Bottom

Slow, extended pattern with no sharp inflections — price forms a gentle dome (top) or bowl (bottom) over many weeks. Rare but very high win-rate when clean. Often the trade is a positional multi-month hold.

4.10 Volume as the confirmation lens

Every pattern above has a volume signature. Whenever a pattern's price behaviour aligns with its expected volume signature, quality is high. When they diverge, treat the pattern with suspicion.

4.11 False breakouts — the pattern trader's biggest enemy

A false breakout is when price breaks the pattern boundary, triggers stops, and then immediately reverses back inside. Four defences:

1. Wait for the close — never enter on the intra-bar break. Daily patterns wait for the daily close beyond the level
2. Volume filter — no volume expansion = suspect break. Skip it
3. Retest entry — instead of entering on the break, wait for the pullback retest of the broken level. Lower win rate on trigger, but higher win rate per trade
4. Fixed stop beyond the pattern extreme — stop-loss on the OTHER side of the pattern (e.g., above the head for a topping H&S), sized so a stop-out is only 1–2% of your account

4.12 The chart

Two years of daily Nifty 50. Look at the visible swings and try to identify patterns as you scan: any double tops around the same price? Consolidation triangles between rallies? Flags after big up days?