I think this needs a bit of world building. Like a news ticker, or twitter threads where people are flipping out about the stonks. Or ceos promising that their company will make a fortune etc.
Aaand I think it would be cool if stocks could actually terminate and be taken of the market. Right now it's too easy to just buy low and wait to sell high, because everything is guaranteed to eventually hit it up again.
As neither a gambler nor a stock trader I appreciate the opportunity to partake!