@sil in the case of bankers and stockbrokers it's literally educated-guesswork (when done legally) so an ideal use-case for the guesswork-machine.
when done illegally it's called insider-trading, and you should see how good the guesswork-machine can do when you forget to tell it the rules of the game or how much of what information to use...

the whole field is basically mathematical probability with a dollar-sign in front, so you don't even need a complex LLM to flip that coin enough times.