SPY: Stocks with Huge Volume Spikes


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S&P 500 is showing signs of institutional selling: Sell Imbalance reaches -$87.8 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 $571.10. Large volume bursts in S&P 500 stocks reached 37.3 million shares worth a total of $4.3 billion in transactions. There was notable buy pressure in the Energy and Materials sectors. Overall, sell volume pressure exceeded buy volume pressure by 4.4%. There were 117 stocks that had more buy pressure on balance, and 123 stocks that had more sell pressure from large institutions. As a whole, there was a net negative -$87.8 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 54.7%, compared with 45.3% 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 is -$87.8 million, however, the furthest sell imbalance for the day occurred at 12:15 PM, when the net sell dollar volume was -$284.6 million. The highest cumulative buy imbalance occurred at 11:15 AM, when the net buy hit +$3.9 million. The largest spike in imbalance came between 9:30 AM and 9:45 AM when the sell pressure surpassed the buy pressure by a 2.7 to 1 ratio.

Flow by Sector

Technology had the biggest dollar volume bursts of all the SPDR sectors, with sell dollar volume exceeding buy dollar volume by $9.4 million. 16 of the Technology stocks had positive dollar balance, versus 17 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 440,196 shares. As of this afternoon, the average purchase price on buy volume was $137.89. The stock has gained $2.78, indicating strength following the trade.