Volume is important because it shows the level of interest in a stock. Current volume in a stock, relative to prior volume, shows if interest is higher or lower in a stock than it was before. High volume, or relatively high volume (compared to prior volume), is more suitable for active traders. Very low volume typically indicates a lack of interest and usually little price movement. Volume is also significant for screening stocks. Average volume—the typical volume seen in a day over a period time—helps greatly in this regard. Day traders need to be able to get in and out of a stock quickly and with ease, so they will want to trade stocks with high daily volume – typically 1 million shares at absolute minimum.Swing traders and investors have a little more leeway and therefore may trade stocks with lower volume, around 500,000 and 100,000 shares or more per day, respectively. They still want stocks that have enough volume to get in and out when they need to, but the urgency is not quite as high as it is for short-term traders.That’s the significance of volume as a defined number; here’s how to analyze it.