S&P 500 is showing signs of institutional buying: Buy Imbalance sits at +$637.5 million
Following the Big Money in S&P 500 Stocks
So far in trading today, the S&P 500 ETF is unchanged. SPY stock last traded at $759.20. Large volume bursts in S&P 500 stocks reached 58.0 million shares worth a total of $13.2 billion in transactions. There was notable buy pressure in the Technology and Health Care sectors. Overall, buy volume pressure surpassed sell volume pressure by 0.0%. There were 155 stocks that had more buy pressure on balance, and 133 stocks that had more sell pressure from large institutions. As a whole, there was a net positive +$637.5 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 66.5%, compared with 33.5% 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 buy imbalance is +$637.5 million, however, the peak buy imbalance for the day occurred at 1:15 PM, when the net buy dollar volume was +$637.8 million. The lowest cumulative sell imbalance occurred at 9:45 AM, when the net sell reached -$437.0 million. The largest spike in imbalance came between 9:45 AM and 10:00 AM when the buy pressure outweighed the sell pressure by a 3.4 to 1 ratio.
Flow by Sector
Technology had the highest amount of dollar volume bursts of all the SPDR sectors, with buy dollar volume exceeding sell dollar volume by $596.6 million. 34 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. Buy volume bursts outpaced sell volume by 550,652 shares. As of this afternoon, the average purchase price on buy volume was $229.03. Despite the buy pressure, the stock has dropped $1.39 on the day.

