Does the second low have to match the first exactly?

No. A slightly higher or lower second low is common. A higher second low can show buyers stepping in earlier.

How is it different from support?

Support is a level where price has held. A double bottom is a specific pattern that includes the confirmation break above the middle peak.

Patterns on higher timeframes are generally more significant, but use the timeframe you trade.

Chart pattern

A double bottom is a reversal pattern in which price tests the same low twice, then rises above the high between them. It looks like the letter W.

The pattern is invalidated if price closes decisively below both lows.

Does the second low have to match the first exactly?: No. A slightly higher or lower second low is common. A higher second low can show buyers stepping in earlier.
How is it different from support?: Support is a level where price has held. A double bottom is a specific pattern that includes the confirmation break above the middle peak.
Which timeframe is best?: Patterns on higher timeframes are generally more significant, but use the timeframe you trade.

See how patterns are applied to a specific instrument in the market guides.

Educational content, not financial advice. Chart patterns describe what price has done and do not predict what it will do next.

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