Traders work on the floor of the New York Stock Exchange.
Lucas Jackson | Reuters
Market rallies in recent days have been categorized by heavy selling, a negative sign for stocks as they struggle to emerge from correction territory.
In the past four trading sessions, buying interest dissipated throughout the day, sending equity benchmarks to the lows of the session.
Read More Sunken sentiment: Investors fear 1987-like fall
Here's a detailed look at the trading action in the past few sessions: