$QQQ $SPXU.ETF $SPXS.ETF S&P 500 Index experienced three bouts of sharp volatility during today's trading session, with total market-cap volatility of about $2.9 trillion. The index closed at 7,316.15 points, down 112.63 points.

From 9:30 a.m. to 12:15 p.m. U.S. Eastern Time, the S&P 500 Index fell by 85 points, and the market value evaporated by $770 billion.

From 12:15 p.m. to 2:55 p.m. Eastern Time, the S&P 500 Index rose by 110 points, and the market value increased by $1 trillion.

From 2:55 p.m. to 3:45 p.m. Eastern Time, the S&P 500 Index fell by 120 points, and the market value evaporated by $1.1 trillion.
# U.S. 30-year Treasury yields rise to nearly 5.23%