SPY: Stocks with Huge Volume Spikes


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S&P 500 has seen increased institutional buying: Buy Imbalance sits at +$1.1 billion

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 $579.42. Large volume bursts in S&P 500 stocks reached 44.7 million shares worth a total of $6.1 billion in transactions. There was notable buy pressure in the Consumer Discretionary and Technology sectors. Overall, buy volume pressure outpaced sell volume pressure by a 1.5 to 1 ratio. There were 113 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 positive +$1.1 billion in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 64.6%, compared with 35.4% 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 buy imbalance is +$1.1 billion, however, the peak buy imbalance for the day occurred at 1:00 PM, when the net buy dollar volume was +$1.4 billion. The largest spike in imbalance came between 9:30 AM and 9:45 AM when the buy pressure outweighed the sell pressure by a 10.7 to 1 ratio.

Flow by Sector

Consumer Discretionary had the most dollar volume bursts of all the SPDR sectors, with buy dollar volume exceeding sell dollar volume by $633.3 million. 13 of the Consumer Discretionary stocks had positive dollar balance, versus 15 that were net negative.

Individual Stocks

TSLA stock had the single biggest volume burst activity of all the S&P 500 stocks. Buy volume bursts exceeded sell volume by 2.6 million shares. As of this afternoon, the average purchase price on buy volume was $265.10. The stock has gained $6.03, indicating strength following the trade.