Glossary term

Breakout

A breakout is when a stock's or index's price moves beyond a previously defined boundary — such as the top of a trading range, a swing high or low, or a horizontal support or resistance level. On NSE cash and F&O charts it is commonly noted when the close pushes through the level rather than just touching it intraday. Traders often look at the accompanying traded volume to judge whether the move has participation behind it.

Also called: break out, break-out, breakout trade, range breakout, level breakout, price breakout

How it is read

A breakout is commonly read as the price escaping a zone where buyers and sellers were previously balanced. A move beyond resistance is described as an upside breakout and a move below support as a downside breakout (sometimes called a breakdown). A "clean" breakout is generally one where price clears the level and holds, often with above-average volume, whereas a "false" breakout (or whipsaw) is one where price pokes past the level and then returns inside the old range. Many observers wait for a confirming close, a retest of the broken level, or a volume expansion before treating the move as established.

What it does not tell you

A breakout describes that a level was crossed; it does not tell you how far price will travel, how long the move will last, or whether it will hold. Volume can be misleading on its own — expiry days, index rebalancing, block deals, or news can inflate it without a durable move. The chosen level is subjective: different charting time frames, gap openings, and circuit limits can make the same price look like a breakout to one viewer and noise to another. False breakouts are common in low-liquidity counters and in choppy, range-bound sessions, so the label alone says nothing about whether the move is genuine.

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