SPY: Large Volume Trades and Price Impact


Re-Tweet
Share on LinkedIn

S&P 500 is showing signs of institutional buying: Buy Imbalance reaches +$54.9 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 $578.74. Large volume bursts in S&P 500 stocks reached 38.8 million shares worth a total of $4.5 billion in transactions. There was notable buy pressure in the Communication Services and Health Care sectors. Overall, buy volume pressure and sell volume pressure were fairly similar during trading. There were 127 stocks that had more buy pressure on balance, and 111 stocks that had more sell pressure from large institutions. As a whole, there was a net positive +$54.9 million in dollar volume trades. A larger portion of the trading volume matched up in the dark pool, with 57.6% of the large volume transactions being made off-exchange, while only 42.4% was traded on lit exchanges. 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 of +$54.9 million occurred at 1:45 PM. This also represented the peak buy imbalance for the day. The lowest cumulative sell imbalance occurred at 11:45 AM, when the net sell reached -$327.2 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 4.5 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 $11.6 million. 17 of the Technology stocks had positive dollar balance, versus 14 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 636,996 shares. As of this afternoon, the average trade price on sell volume was $115.31. Even though the sell pressure has been significant, the stock price has risen $0.33 on the day.