Trading volume refers to the total number of shares, contracts, or units of an asset that are traded (bought and sold) during a specific time period, usually over the course of a single day. It's a key indicator of market activity and liquidity.

Key Points About Trading Volume:

1. Market Activity: High trading volume generally indicates strong market interest and activity in a particular asset, which can signify important events like earnings reports, news, or changes in investor sentiment.
2. Liquidity: Assets with higher trading volumes tend to have better liquidity, meaning they can be bought or sold more easily without causing a significant impact on the asset’s price.
3. Confirmation of Trends: Traders often use volume to confirm trends or reversals. For example, a rising price with increasing volume is considered a strong bullish signal, while a declining price with high volume may signal a bearish trend.

Uses of Trading Volume:

• Trend Confirmation: If an asset's price moves up or down on high volume, it suggests the move is more likely to be sustained. Conversely, price movements on low volume may be seen as weak or unreliable.
• Support and Resistance Levels: Volume can indicate the strength of support and resistance levels. For example, if a stock breaks through a resistance level on high volume, it may suggest a strong breakout.
• Volatility and Price Movements: Sudden spikes in volume can lead to increased volatility and larger price swings, as more participants are buying and selling the asset.

Example:

If a stock's daily trading volume is 1 million shares, it means that 1 million shares were bought and sold over the course of the trading day. A stock with high daily volume might be experiencing significant attention from traders, which could result in notable price changes.

Average Trading Volume:

• The average trading volume over a set period (like 30 days) is often used to compare a stock's current activity to its historical activity. A sudden spike in volume above its average can indicate a new development or event that has attracted attention.

Low vs. High Volume:

• Low Volume: Can lead to price fluctuations due to a lack of buyers or sellers, making it harder to execute trades without impacting the price.
• High Volume: Suggests greater liquidity and easier entry or exit from trades, with less price slippage.