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Triangles

Not tested by us Not tested by us yet. No verdict stamp.

Draw a line over the highs and one under the lows. If they come together, you get a triangle: symmetrical, ascending (flat top) or descending (flat bottom).

What traders claim: price breaks out of the triangle with force, often in the direction of the earlier trend.

Triangle tops and bottoms were part of the Lo, Mamaysky and Wang (2000) pattern set.

Evidence: see Do chart patterns work? What the research says. In short: mixed, and very sensitive to how you define the pattern.

Related

• Flags and pennants
• Wedges
• Do chart patterns work? What the research says

Sources & studies

1. Lo, Mamaysky & Wang (2000), Journal of Finance (author PDF)
2. Investopedia (secondary): Technical analysis

Chart and candlestick patternsFlags and pennantsWedges

Last checked: 2026-11-04 · Educational, not financial advice.

Education only, not financial advice. No signals. Backtests are hypothetical: real trading can be worse. Past results don't predict future results.