Unusual volume scanner

Big moves often start with volume. When a coin suddenly trades far more than usual relative to its size, someone is positioning — and price often follows. The SimpleAlgo Unusual Volume scanner checks the crypto market every few minutes and lists the coins with the most unusual activity, rated Extreme, High or Moderate.

Each spike shows the price when it was detected, the 24-hour change and how large the trading volume is compared with the coin's market value. The history tab lets you look back over past spikes and see what price did afterwards.

Free accounts see spikes on a 15-minute delay. Members see them the moment they are detected, with instant alerts.

Worked example: Starknet (STRK), October 12, 2026

On October 12, 2026 the scanner flagged Starknet (STRK) as an Extreme spike: daily trading volume reached about 60% of its entire market value while price was down about 16% on the day. Filecoin (FIL) appeared at the same time as a High spike, with volume around 31% of its market value.

A spike like STRK's tells you a lot of coins are changing hands in a falling market — often forced selling or a large holder exiting — and is a reason to watch closely rather than a signal on its own.

STRK · Extreme

$0.0979 · −16.06% · Vol/MCap 60%

FIL · High

$1.14 · −1.08% · Vol/MCap 31%

How to read the results

Vol/MCap compares 24-hour trading volume with the coin's market value. Most large coins trade a few percent per day; readings above 25% are unusual and above 45% are extreme.

Combine volume with direction: heavy volume with rising price suggests buying pressure; heavy volume with falling price suggests selling pressure.

Use Chart Analysis on a flagged coin to see whether there is a clean setup before acting.

Frequently asked questions

Is the scanner free?

Yes. Free accounts see volume spikes on a 15-minute delay. Members see them in real time with alerts.

How often does it scan?

The market is scanned continuously in the background, roughly every 10 minutes.

Which markets are covered?

The scanner currently covers the largest cryptocurrencies by market value.

Does a spike mean price will go up?

No. A spike shows unusual activity in either direction. Check the price change and the chart before deciding anything.

Can I see past spikes?

Yes, the History tab shows earlier spikes and how price moved afterwards.

Educational analysis only. Not financial advice. Trading involves substantial risk of loss.