Volume Spikes: What They Are and How to Read Them on NSE
A volume spike is traded volume far above a stock's own recent baseline. Spikes mark attention — breakouts, news absorption or traps — never direction by themselves.
Last updated: September 2026 · Reviewed quarterly · Data: live NSE/BSE trade feeds, 09:15–15:30 IST
What a volume spike measures
Abnormal traded quantity/value versus the symbol's own intraday history. Baselines are per-symbol: a spike in a small-cap means something different from a spike in RELIANCE.
How Streetwhacks flags spikes
- Inputs: live traded quantity and value per symbol from NSE/BSE feeds.
- Comparison: current volume vs the symbol's recent intraday baseline with outlier filtering for erroneous ticks.
- Refresh: continuously during market hours; confluence with price extremes and large prints is surfaced on Market Pulse.
What spikes mean
- Spike + fresh day high + large buy prints: accumulation worth reviewing.
- Spike + sharp reversal wick: absorption — big supply meeting demand.
- Lone spike, no price progress: noise or two-sided churn; demand confirmation.
Limitations
- Spikes show executed interest, not intent — a big buy can still be absorbed.
- News gaps and pre-open prints need separate interpretation.
- Informational analytics, not investment advice. See disclaimer.
Example
Three ₹1 Cr+ prints plus a volume spike and fresh day high in the same symbol within minutes — the confluence Market Pulse is built to surface. Confirm trend on Market Trend before deciding.
Related metrics
Market breadth · Directional trends · Market Pulse · Methodology
Volume Spike FAQs
What is a volume spike?
Traded volume far above the symbol's own recent baseline — a marker of attention, not direction by itself.
Are volume spikes bullish?
Not inherently. Read spikes with price extremes and trade size: confluence matters more than any single print.
Why per-symbol baselines?
Liquidity differs by orders of magnitude across stocks; a fixed threshold would drown small-caps or miss giants.