Has anyone investigated the recent surge in Class A share trading volume? Could this be attributed to the rise in fractional share trading?
User @aws figured out a year ago that the increase beginning in 2021 was due to Robinhood fractional shares a month before the WSJ reported on it (Robinhood Was Behind Phantom Surge in Berkshire Hathaway Trade Volume, Study Finds - WSJ). It doesn't seem like retail fractional share trading would be more than triple the activity during 2021.
Additionally, trading volume has been 36% higher on Mondays than the rest of the week so far in 2023. This trend seems to have been around since 2020, albeit to a lesser extent. I doubt the items are correlated but it seems like another odd trend.