It's based on price and is designed to help traders see price levels where demand was highest and lowest. So, if you're interested in volume amplification, consider using the Volume Profile indicator, one of many studies on the thinkorswim ® platform. But volume alone doesn't indicate the specific price or prices at which traders are most interested. On a specific day, a stock might experience high volume, which may imply there's interest in that stock. It may also indicate institutional buying. For example, increasing volume on a breakout above resistance or below support may indicate a trend continuation or reversal. Let's start with volume, which may provide valuable trading information. Wealth and Investment Management Solutions.Meet the experts behind Schwab's investing insights.Environmental, Social and Governance (ESG) Investing.