Market Concepts

Volume (Share Volume)

Volume is the total number of shares traded in a stock or across the entire market during a trading session.

Sponsored

Share volume is simply the count of shares that changed hands during a trading period. It is one of the most fundamental raw signals available to investors, revealing the intensity of market participation for a security.

Volume analysis is particularly useful when combined with price action. A price increase accompanied by rising volume is generally considered a stronger, more reliable signal than the same price increase on thin volume. Similarly, a price decline on heavy volume suggests strong conviction from sellers.

Volume spikes — when daily volume significantly exceeds the historical average — often coincide with material news events such as earnings announcements, dividend declarations, rights issues, or corporate restructurings. Monitoring unusual volume surges can alert investors to developments worth investigating.

At the CSE, many stocks trade relatively modest volumes compared to major global exchanges. This means individual large orders can materially move prices, and investors trading in significant size should be conscious of their market impact.

Advertisement

On the Colombo Stock Exchange

The heatmap can be viewed in "volume" sizing mode to identify which stocks are seeing the most share-count activity. This is particularly useful during events like post-results trading or corporate action announcements.

Example

If 1 million shares of a stock trade today versus a 90-day average of 200,000 shares, it has seen a 5x volume spike — worth investigating.

Related terms

Frequently Asked

What is Volume (Share Volume)?

Volume is the total number of shares traded in a stock or across the entire market during a trading session.

How does this apply to the Colombo Stock Exchange?

The heatmap can be viewed in "volume" sizing mode to identify which stocks are seeing the most share-count activity. This is particularly useful during events like post-results trading or corporate action announcements.

Can you give a practical example?

If 1 million shares of a stock trade today versus a 90-day average of 200,000 shares, it has seen a 5x volume spike — worth investigating.