SPY: Large Volume Trades and Price Impact


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S&P 500 is showing signs of institutional selling: Sell Imbalance reaches -$601.9 million

Following the Big Money in S&P 500 Stocks

So far in trading today, the S&P 500 ETF is down 1.2%. SPY stock last traded at $702.85. Large volume bursts in S&P 500 stocks reached 59.0 million shares worth a total of $10.9 billion in transactions. There was notable buy pressure in the Energy and Consumer Discretionary sectors. Overall, sell volume pressure surpassed buy volume pressure by 12.4%. There were 124 stocks that had more buy pressure on balance, and 171 stocks that had more sell pressure from large institutions. As a whole, there was a net negative -$601.9 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 57.5%, compared with 42.5% 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 -$601.9 million occurred at 2:00 PM. This also represented the largest sell imbalance for the day. The highest cumulative buy imbalance occurred at 11:45 AM, when the net buy hit +$435.9 million. The largest spike in imbalance came between 1:00 PM and 1:15 PM when the sell pressure surpassed the buy pressure by a 3.1 to 1 ratio.

Flow by Sector

Technology had the most dollar volume bursts of all the SPDR sectors, with sell dollar volume exceeding buy dollar volume by $509.9 million. 29 of the Technology stocks had positive dollar balance, versus 33 that were net negative.

Individual Stocks

INTC stock had the single biggest volume burst activity of all the S&P 500 stocks. Buy volume bursts exceeded sell volume by 1.2 million shares. As of this afternoon, the average purchase price on buy volume was $67.46. The stock has rallied $1.74, indicating strength following the trade.

Market Data Delayed 15 Minutes