S&P 500 is showing signs of institutional selling: Sell Imbalance sits at -$2.2 billion
Following the Big Money in S&P 500 Stocks
So far in trading today, the S&P 500 ETF is down 0.8%. SPY stock last traded at $683.83. Large volume bursts in S&P 500 stocks reached 86.9 million shares worth a total of $15.8 billion in transactions. There was notable buy pressure in the Financial and Health Care sectors. Overall, sell volume pressure outpaced buy volume pressure by a 1.3 to 1 ratio. There were 206 stocks that had more buy pressure on balance, and 170 stocks that had more sell pressure from large institutions. As a whole, there was a net negative -$2.2 billion in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 57.7%, compared with 42.3% being transacted in the dark pool. To learn more about large volume trades, check out our help section.
Daily Chart: Large Volume Bursts Over Time
As you can see from the chart below, the most recent cumulative sell imbalance of -$2.2 billion occurred at 2:00 PM. This also represented the largest sell imbalance for the day. The highest cumulative buy imbalance occurred at 9:45 AM, when the net buy hit +$156.6 million. The largest spike in imbalance came between 11:30 AM and 11:45 AM when the sell pressure surpassed the buy pressure by a 3.3 to 1 ratio.
Flow by Sector
Technology experienced the largest dollar volume bursts of all the SPDR sectors, with sell dollar volume exceeding buy dollar volume by $2.0 billion. 31 of the Technology stocks had positive dollar balance, versus 31 that were net negative.
Individual Stocks
NVDA stock had the single biggest volume burst activity of all the S&P 500 stocks. Sell volume bursts outpaced buy volume by 2.5 million shares. As of this afternoon, the average trade price on sell volume was $174.99. The stock price decreased $6.99, indicating weakness following the trade.

