SPY: Stocks with Huge Volume Spikes


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S&P 500 has seen increased institutional selling: Sell Imbalance sits at -$636.5 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 $506.42. Large volume bursts in S&P 500 stocks reached 35.7 million shares worth a total of $5.9 billion in transactions. There was notable buy pressure in the Health Care and Consumer Staples sectors. Overall, sell volume pressure exceeded buy volume pressure by a 1.3 to 1 ratio. There were 112 stocks that had more buy pressure on balance, and 132 stocks that had more sell pressure from large institutions. As a whole, there was a net negative -$636.5 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 58.1%, compared with 41.9% 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 -$636.5 million, however, the furthest sell imbalance for the day occurred at 1:15 PM, when the net sell dollar volume was -$731.2 million. The highest cumulative buy imbalance occurred at 10:15 AM, when the net buy hit +$227.6 million. The largest spike in imbalance came between 11:00 AM and 11:15 AM when the sell pressure surpassed the buy pressure by a 7.8 to 1 ratio.

Flow by Sector

Technology experienced the most dollar volume bursts of all the SPDR sectors, with sell dollar volume exceeding buy dollar volume by $552.7 million. 13 of the Technology stocks had positive dollar balance, versus 22 that were net negative.

Individual Stocks

WBD stock had the single biggest volume burst activity of all the S&P 500 stocks. Sell volume bursts surpassed buy volume by 2.0 million shares. As of this afternoon, the average trade price on sell volume was $7.48. The stock has fallen $0.72, indicating weakness following the trade.