SPY: Stocks with Huge Volume Spikes


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S&P 500 is showing signs of institutional selling: Sell Imbalance sits at -$665.5 million

Following the Big Money in S&P 500 Stocks

So far in trading today, the S&P 500 ETF is down 0.7%. SPY stock last traded at $586.43. Large volume bursts in S&P 500 stocks reached 39.0 million shares worth a total of $5.1 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 1.3 to 1 ratio. There were 107 stocks that had more buy pressure on balance, and 125 stocks that had more sell pressure from large institutions. As a whole, there was a net negative -$665.5 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 52.4%, compared with 47.6% 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 -$665.5 million, however, the furthest sell imbalance for the day occurred at 11:30 AM, when the net sell dollar volume was -$692.4 million. The largest spike in imbalance came between 10:00 AM and 10:15 AM when the sell pressure surpassed the buy pressure by a 6.7 to 1 ratio.

Flow by Sector

Consumer Discretionary experienced the biggest dollar volume bursts of all the SPDR sectors, with sell dollar volume exceeding buy dollar volume by $474.5 million. 6 of the Consumer Discretionary stocks had positive dollar balance, versus 14 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 966,224 shares. As of this afternoon, the average trade price on sell volume was $144.56. The stock has dropped $2.77, indicating weakness following the trade.