SPY: Stocks with Huge Volume Spikes


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S&P 500 is showing signs of institutional selling: Sell Imbalance reaches -$352.3 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 $601.10. Large volume bursts in S&P 500 stocks reached 14.4 million shares worth a total of $2.9 billion in transactions. There was notable buy pressure in the Technology and Real Estate sectors. Overall, sell volume pressure surpassed buy volume pressure by a 1.3 to 1 ratio. There were 56 stocks that had more buy pressure on balance, and 55 stocks that had more sell pressure from large institutions. As a whole, there was a net negative -$352.3 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 73.3%, compared with 26.7% 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 -$352.3 million occurred at 2:00 PM. This also represented the largest sell imbalance for the day. The largest spike in imbalance came between 9:45 AM and 10:00 AM when the sell pressure surpassed the buy pressure by a 50.5 to 1 ratio.

Flow by Sector

Consumer Discretionary had the highest amount of dollar volume bursts of all the SPDR sectors, with sell dollar volume exceeding buy dollar volume by $441.8 million. 5 of the Consumer Discretionary stocks had positive dollar balance, versus 8 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 418,385 shares. As of this afternoon, the average purchase price on buy volume was $139.85. Despite the buy pressure, the stock has dropped $0.16 on the day.