In the last few weeks, we have reported on many record-level market performances, most of which have entailed downward market movements. Today, the markets recorded very large intraday fluctuations. Each of the four major U.S. market indices exhibited a very large difference between its lowest and highest levels recorded during the trading session. The intraday fluctuation was 8.51% for the S&P 500 index (largest since 3/13/2020), 7.09% for the Dow Jones Industrial Average (largest since 3/25/2020), 10.20% for the Nasdaq Composite index (largest since 11/13/2008), and 9.12% for the Russell 2000 index (largest since 3/19/2020). We used our Largest Fluctuations in Market History analysis tool to prepare four charts to show these market changes.