SPY: Stocks with Huge Volume Spikes


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S&P 500 is showing signs of institutional buying: Buy Imbalance reaches +$252.0 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 $664.17. Large volume bursts in S&P 500 stocks reached 52.8 million shares worth a total of $8.7 billion in transactions. There was notable buy pressure in the Communication Services and Financial sectors. Overall, buy volume pressure outpaced sell volume pressure by 0.0%. There were 148 stocks that had more buy pressure on balance, and 123 stocks that had more sell pressure from large institutions. As a whole, there was a net positive +$252.0 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 58.1%, compared with 41.9% 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 of +$252.0 million occurred at 2:00 PM. This also represented the peak buy imbalance for the day. The lowest cumulative sell imbalance occurred at 10:45 AM, when the net sell reached -$773.9 million. The largest spike in imbalance came between 11:15 AM and 11:30 AM when the buy pressure outweighed the sell pressure by a 4.3 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 $4.1 million. 36 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 surpassed buy volume by 1.3 million shares. As of this afternoon, the average trade price on sell volume was $181.40. The stock has dropped $2.39, indicating weakness following the trade.

Market Data Delayed 15 Minutes