Founder, Underpitch · Educational material on market structure, chart reading and risk awareness.
3 July 2026
Chart patterns organise recurring price structures such as triangles, flags, double tops and head-and-shoulders. Their names are less important than trend context, boundary quality, breakout confirmation, volume and the level that invalidates the pattern.
Key points
- Patterns are zones and sequences, not perfect drawings.
- Wait for boundary acceptance, not only a wick.
- Failed patterns can create strong opposite moves.
- Measured targets are estimates, not promises.
Continuation patterns
Flags, pennants and some triangles often pause an existing trend. The pullback should generally be controlled relative to the prior impulse.
Reversal patterns
Double tops, double bottoms and head-and-shoulders reflect failed trend continuation. The pattern is not complete until a key neckline or structure breaks.
Breakout and retest
A close outside the pattern with participation is stronger. A retest can offer better risk but may not occur.
Pattern failure
If price returns inside the structure and closes beyond the opposite side, trapped participants can accelerate the move.
Worked Indian-market example
After a sharp rally, a stock consolidates in a downward-sloping flag on declining volume. It breaks the upper boundary with expanding volume, but the trader still places the stop below the flag rather than relying on the pattern name.
Quick reference
| Concept | What it shows | Practical meaning |
|---|---|---|
| Flag/Pennant | Short pause after impulse | Often continuation |
| Triangle | Compression between converging boundaries | Direction requires breakout |
| Double top/bottom | Repeated failed extremes | Potential reversal after neckline break |
| Head-and-shoulders | Three-peak structure | Reversal only after confirmation |
Risks and limitations
- Patterns are subjective.
- Early entries can be trapped.
- Targets ignore volatility and market regime.
- Low-liquidity charts can manufacture shapes.
Frequently asked questions
Do chart patterns have fixed success rates?
No. Results depend on market, time frame, rules and testing.
Should I enter before breakout?
That is more anticipatory and carries greater failure risk.
What is a neckline?
A support or resistance boundary completing certain reversal patterns.
Do patterns work intraday?
They can, but noise and costs are higher.
Sources and methodology
Technical analysis is a market-study framework, not a promise of returns. Verify exchange rules, contract specifications and risk disclosures from official sources before acting.
This page is for education and chart-reading awareness. It is not a personalised investment, trading, legal or tax recommendation. Technical setups can fail and market losses can exceed the planned amount because of gaps, leverage, liquidity and execution.