SPY: Stocks with Huge Volume Spikes


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S&P 500 is showing signs of institutional buying: Buy Imbalance sits at +$240.4 million

Following the Big Money in S&P 500 Stocks

So far in trading today, the S&P 500 ETF is up 0.5%. SPY stock last traded at $564.07. Large volume bursts in S&P 500 stocks reached 37.6 million shares worth a total of $3.9 billion in transactions. There was notable buy pressure in the Health Care and Technology sectors. Overall, buy volume pressure surpassed sell volume pressure by 0.0%. There were 130 stocks that had more buy pressure on balance, and 115 stocks that had more sell pressure from large institutions. As a whole, there was a net positive +$240.4 million in dollar volume trades. The trading volume was nearly equal between lit exchanges and trades matched up on dark pool venues. 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 +$240.4 million, however, the peak buy imbalance for the day occurred at 12:15 PM, when the net buy dollar volume was +$304.6 million. The lowest cumulative sell imbalance occurred at 9:45 AM, when the net sell reached -$26.4 million. The largest spike in imbalance came between 11:15 AM and 11:30 AM when the buy pressure outweighed the sell pressure by a 1.9 to 1 ratio.

Flow by Sector

Technology had the most dollar volume bursts of all the SPDR sectors, with buy dollar volume exceeding sell dollar volume by $100.1 million. 21 of the Technology stocks had positive dollar balance, versus 16 that were net negative.

Individual Stocks

PFE stock had the single biggest volume burst activity of all the S&P 500 stocks. Buy volume bursts surpassed sell volume by 749,650 shares. As of this afternoon, the average purchase price on buy volume was $26.40. Despite the buy pressure, the stock has dropped $0.14 on the day.