SPY: Large Volume Trades and Price Impact


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S&P 500 has seen increased institutional buying: Buy Imbalance sits at +$216.9 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 $671.43. Large volume bursts in S&P 500 stocks reached 45.5 million shares worth a total of $7.4 billion in transactions. There was notable buy pressure in the Energy and Consumer Discretionary sectors. Overall, buy volume pressure outpaced sell volume pressure by 0.0%. There were 147 stocks that had more buy pressure on balance, and 120 stocks that had more sell pressure from large institutions. As a whole, there was a net positive +$216.9 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 58.7%, compared with 41.3% 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 +$216.9 million, however, the peak buy imbalance for the day occurred at 11:00 AM, when the net buy dollar volume was +$361.5 million. The lowest cumulative sell imbalance occurred at 10:15 AM, when the net sell reached -$133.8 million. The largest spike in imbalance came between 10:15 AM and 10:30 AM when the buy pressure outweighed the sell pressure by a 4.8 to 1 ratio.

Flow by Sector

Technology had the most dollar volume bursts of all the SPDR sectors, with buy dollar volume exceeding sell dollar volume by $77.9 million. 30 of the Technology stocks had positive dollar balance, versus 19 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 exceeded buy volume by 878,345 shares. As of this afternoon, the average trade price on sell volume was $182.65. The stock has fallen $0.29, indicating weakness following the trade.

Market Data Delayed 15 Minutes