Also did a little sanity check to make sure to make sure I wasn't completely talking out of my ass. Skimmed Wikipedia and a few other sites(no ai overview) and it basically comes down to "it depends". Different regions have different rules, laws, and regulations. Some places it's fine, others it's frowned upon but not illegal, and sometimes it's a criminal offense. And even before all that, even the legal experts disagree on what even constitutes criminal insider trading.
So it all ammounts to if you don't get caught, only the SJWs cares. And if you do, it could be tied up in litigation for years before even bothering to bring formal charges, or are dropped.
--edit--
Added tidbit I just remembered, forgive me I'm old...
Banks don't really insure accounts after they reach a certain threshhold. They also use the money you placed in some accounts for investments of their own. And they really really don't like it when you pull large quantities of money out of your accounts because it screws with those investments. So DTJT moving his account out of Yoko Bank would cause all sorts of major headaches for the bank in addition to the hit to their reputation.