What is considered unusual volume in stocks?

There's no single cutoff, but many traders call volume unusual when it's at least two times the stock's normal volume for that time of day, and very unusual at five times or more. The comparison should be to the same point in the session, since volume is naturally heavy at the open and close.

What is relative volume (RVOL)?

Relative volume compares a stock's volume today with its average volume, usually over the last 10 to 30 days. An RVOL of 1 means normal activity; 3 means three times normal. Good versions compare to the average at the same time of day, not to a full day's volume.

Is high volume bullish or bearish?

Neither by itself. Volume measures activity, not direction. Heavy volume on a breakout to new highs is a sign of strong buying; heavy volume on a breakdown is a sign of strong selling. Read volume together with the price move and the news.

Where can I find unusual volume stocks for free?

Many free screeners, including Finviz, let you filter by relative volume. Finradar's web app lists the day's movers with their relative volume, and its free Momentum surge scanner preset filters for relative volume over 2.

Guides

Unusual Volume Stocks: How to Find Them and What Relative Volume Tells You

November 1, 2026 · 6 min read

Price moves get the headlines, but volume is what tells you whether a move is real. A stock up 8% on its usual volume is drifting; the same stock up 8% on five times its usual volume has something happening. Finding unusual volume stocks early is one of the simplest edges in day trading and swing trading. Here's how to measure it, which numbers matter, and how to avoid the traps.

Why volume matters

Volume is the number of shares traded. A sudden jump in volume means new participants arrived: a fund building a position, traders reacting to news, or short sellers covering. Big, lasting moves almost always start with a surge in volume. Moves on thin volume tend to fade.

Relative volume (RVOL)

Raw volume is hard to compare: 2 million shares is huge for a small cap and nothing for Apple. Relative volume fixes that by comparing today's volume with the stock's own average, usually over the last 10 to 30 sessions.

RVOL 1: normal activity.
RVOL 2 or more: unusual; worth a look.
RVOL 5 or more: something significant is going on.

The better versions adjust for time of day. Volume is naturally heavy in the first and last hour, so 1 million shares by 10:00 a.m. means more than 1 million by 3:55 p.m. A good RVOL compares now with the average at the same point in the session.

A simple unusual volume screen

A practical starting point for US stocks:

Relative volume over 2
Average volume over 500,000 shares, so the stock is liquid enough to trade
Price over $2, to avoid the thinnest names
A catalyst: news, earnings, an upgrade or a sector move

Tighten or loosen from there. Our screener filter guide covers more filters, and the same screen works pre-market with pre-market volume instead.

Reading the volume pattern

Rising volume on a breakout: strong confirmation the move has buyers behind it.
Volume drying up in a pullback: healthy; sellers aren't pressing. This is the shape of a bull flag.
A climax: a huge volume spike after a long run can mark exhaustion rather than a new start.
Heavy volume with no price progress: someone is absorbing the buying or selling; watch which side gives up.

Real move or pump?

Unusual volume is also how pumps look. Warning signs:

No news at all, or news that doesn't justify the move.
A very low float, where a little buying moves the price a lot. Float explained.
Promotion on social media or in paid newsletters.
Repeated halts on the way up; see trading halts explained.

A real catalyst plus volume plus a clean chart is a candidate. Volume alone is a reason to look, not a reason to buy.

Unusual volume vs unusual options activity

"Unusual volume" usually means the shares. Unusual options activity is a separate signal: large or unusual options trades, which some traders follow as hints of informed positioning. Options flow is much harder to interpret, because many big options trades are hedges.

Finding unusual volume with Finradar

In the Finradar web app, Movers lists stocks moving on news, volume and patterns with each stock's relative volume, and Pro can filter the list to Unusual volume. A flame marks movers with a news catalyst, and Pro shows the headline behind it. The free Momentum surge scanner preset filters for relative volume over 2. Click any ticker to open its chart at the current price, and use the Order flow tab to see who is behind the volume.

Not financial advice. High-volume and low-float stocks can move violently in both directions; trading involves substantial risk of loss.