SPY: Large Volume Trades and Price Impact


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S&P 500 has seen increased institutional buying: Buy Imbalance hits +$113.8 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 $544.59. Large volume bursts in S&P 500 stocks reached 39.5 million shares worth a total of $5.0 billion in transactions. There was notable buy pressure in the Consumer Discretionary and Industrials sectors. Overall, buy volume pressure outpaced sell volume pressure by 0.0%. There were 90 stocks that had more buy pressure on balance, and 117 stocks that had more sell pressure from large institutions. As a whole, there was a net positive +$113.8 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 67.4%, compared with 32.6% 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 buy imbalance is +$113.8 million, however, the peak buy imbalance for the day occurred at 10:15 AM, when the net buy dollar volume was +$338.9 million. The lowest cumulative sell imbalance occurred at 11:45 AM, when the net sell reached -$125.9 million. The largest spike in imbalance came between 11:45 AM and 12:00 PM when the buy pressure outweighed the sell pressure by a 8.6 to 1 ratio.

Flow by Sector

Technology had the highest amount of dollar volume bursts of all the SPDR sectors, with sell dollar volume exceeding buy dollar volume by $484.5 million. 13 of the Technology stocks had positive dollar balance, versus 17 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 3.7 million shares. As of this afternoon, the average trade price on sell volume was $124.77. The stock price decreased $2.61, indicating weakness following the trade.