Unusual volume means a stock traded far more shares than its recent average, often because something happened. In the screener the filter is called Vol / Avg: the latest volume divided by the 20-day average volume. A value above 2 means twice the normal activity, and above 3 is rare enough to deserve a look.
Last updated: October 2026.
Why volume matters
Price moves tell you what happened. Volume tells you how many people cared. A 5% rise on twice the normal volume is a stronger signal than the same rise on half the volume, because more investors agreed with the move.
Common reasons for a volume spike:
- Earnings or a profit warning
- A takeover bid, rumour or stake disclosure
- An index inclusion or removal
- A broker upgrade or downgrade
- Insider buying or selling
The screen, step by step
- Select the exchanges you follow.
- Set Vol / Avg to a minimum of 3.
- Set a minimum market cap of 100 million euros, so illiquid stocks with random volume do not flood the list.
- Sort by market cap, or add a price-change filter to see only up days or only down days.
Open this screen directly. Volume is measured from end-of-day data, so the list refreshes after the close.
Reading the result
| Pattern | Likely meaning | What to check |
|---|---|---|
| High volume and price up strongly | Positive news or a breakout | News feed, earnings date, whether price is near a 52-week high |
| High volume and price down strongly | Negative news or forced selling | Profit warning, rating cut, debt issues |
| High volume and price flat | Large holders trading, or index rebalancing | Index events, insider and ownership changes |
| High volume on a microcap | Often noise | Raise the market-cap floor |