What is Gap Up? Complete Guide for Indian Investors & Traders

A gap up occurs when a stock opens above its previous session's high, leaving a price void on the chart where no trading happened. Overnight news, results or global cues reprice the stock before the open. The gap zone itself becomes a reference area for the sessions ahead.

Suppose Nykaa closes at ₹180, then strong results land after hours. The next morning it opens at ₹192, never touching the prices in between. That untraded ₹180-192 zone is the gap, and how price treats it reveals the move's quality.

What types of gap ups exist?

A breakaway gap jumps out of a base or pattern and starts a new trend. A continuation gap appears mid-trend, often near the move's middle, signalling acceleration. An exhaustion gap comes late in an extended rally and marks the final burst before reversal. The same open looks identical at 9:15; location within the trend tells them apart.

How do traders trade gap ups?

The first reaction matters: a gap that holds above the prior high and builds higher shows real demand, while one that fades back into the gap zone warns of a trap. Many traders wait for the first 15 to 30 minutes before acting. Gap-fill behaviour is tracked too, since partial fills that hold often become springboards for continuation.

You can test gap ups based setups on liquid stocks through Stockk equity trading. Index traders often combine it with option data while trading F&O on Stockk.

Technical analysis involves interpretation. The same chart can be read differently by different traders. Always combine multiple tools and manage risk before acting on any signal.

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