S&P 500 is showing signs of institutional selling: Sell Imbalance sits at -$1.0 billion
Following the Big Money in S&P 500 Stocks
So far in trading today, the S&P 500 ETF is down 0.6%. SPY stock last traded at $645.11. Large volume bursts in S&P 500 stocks reached 62.4 million shares worth a total of $10.0 billion in transactions. There was notable buy pressure in the Consumer Discretionary and Health Care sectors. Overall, sell volume pressure exceeded buy volume pressure by a 1.2 to 1 ratio. There were 139 stocks that had more buy pressure on balance, and 122 stocks that had more sell pressure from large institutions. As a whole, there was a net negative -$1.0 billion in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 66.1%, compared with 33.9% 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 is -$1.0 billion, however, the furthest sell imbalance for the day occurred at 11:15 AM, when the net sell dollar volume was -$1.1 billion. The highest cumulative buy imbalance occurred at 10:00 AM, when the net buy hit +$86.3 million. The largest spike in imbalance came between 10:00 AM and 10:15 AM when the sell pressure surpassed the buy pressure by a 3.9 to 1 ratio.
Flow by Sector
Technology had the most dollar volume bursts of all the SPDR sectors, with sell dollar volume exceeding buy dollar volume by $887.7 million. 28 of the Technology stocks had positive dollar balance, versus 23 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 exceeded buy volume by 1.1 million shares. As of this afternoon, the average trade price on sell volume was $165.82. The stock has fallen $5.67, indicating weakness following the trade.

