SPY: Stocks with Huge Volume Spikes


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S&P 500 is showing signs of institutional selling: Sell Imbalance sits at -$656.0 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 $597.54. Large volume bursts in S&P 500 stocks reached 46.7 million shares worth a total of $6.9 billion in transactions. There was notable buy pressure in the Health Care and Communication Services sectors. Overall, sell volume pressure exceeded buy volume pressure by a 1.2 to 1 ratio. There were 153 stocks that had more buy pressure on balance, and 116 stocks that had more sell pressure from large institutions. As a whole, there was a net negative -$656.0 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 63.8%, compared with 36.2% 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 -$656.0 million occurred at 2:00 PM. This also represented the largest sell imbalance for the day. The highest cumulative buy imbalance occurred at 9:45 AM, when the net buy hit +$189.5 million. The largest spike in imbalance came between 9:45 AM and 10:00 AM when the sell pressure surpassed the buy pressure by a 3.3 to 1 ratio.

Flow by Sector

Technology saw the most dollar volume bursts of all the SPDR sectors, with sell dollar volume exceeding buy dollar volume by $537.6 million. 24 of the Technology stocks had positive dollar balance, versus 25 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 outpaced buy volume by 4.1 million shares. As of this afternoon, the average trade price on sell volume was $137.90. The stock price decreased $5.10, indicating weakness following the trade.