How does Joker have money?

I'm genuinely puzzled here. Could you please elaborate on how Joker manages to acquire wealth? The paragraph seems to hint at some form of financial prowess, but the details are rather vague. Does he have a secret stash of bitcoins or some other cryptocurrency? Or perhaps he's a master of the stock market, able to turn a small investment into a fortune? I'm eager to understand the mechanisms behind his financial success. Is there a particular strategy or tactic he employs? Or is it simply a matter of luck and good timing? Your insights would be greatly appreciated.