SPY: Large Volume Trades and Price Impact


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S&P 500 is indicating institutional buying: Buy Imbalance reaches +$302.6 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 $586.75. Large volume bursts in S&P 500 stocks reached 57.3 million shares worth a total of $8.6 billion in transactions. There was notable buy pressure in the Technology and Utilities sectors. Overall, buy volume pressure surpassed sell volume pressure by 0.0%. There were 119 stocks that had more buy pressure on balance, and 134 stocks that had more sell pressure from large institutions. As a whole, there was a net positive +$302.6 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 57.2%, compared with 42.8% 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 +$302.6 million, however, the peak buy imbalance for the day occurred at 12:30 PM, when the net buy dollar volume was +$498.4 million. The lowest cumulative sell imbalance occurred at 10:45 AM, when the net sell reached -$190.7 million. The largest spike in imbalance came between 12:15 PM and 12:30 PM when the buy pressure outweighed the sell pressure by a 3.6 to 1 ratio.

Flow by Sector

Technology had the largest dollar volume bursts of all the SPDR sectors, with buy dollar volume exceeding sell dollar volume by $373.9 million. 21 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. Buy volume bursts exceeded sell volume by 3.6 million shares. As of this afternoon, the average purchase price on buy volume was $134.37. The stock has rallied $4.91, indicating strength following the trade.

Market Data Delayed 15 Minutes