Look at a screen at almost any point in 2020, and chances are you saw something like this: A company that nobody had ever heard of 12 months ago was in the process of trading 20 million shares in a day.
Ideanomics Inc., fuboTV Inc., Vaxart Inc. -- names that would’ve elicited a collective “who?” in January are obscure no longer, after seducing the retail day-trader horde whose presence defined the coronavirus era in equities. A mattress maker called Purple Innovation Inc. saw turnover surge 13-fold as it went from $5 to $25 in three months. Blank-check-born Fisker Inc. posted four sessions in which volume topped 40 million shares each.