I will be honest I've never seen tokenized stock on-chain. On the other hand there are many commodities get tokenized.

That one time I see tokenized stock is from CEX which shouldn't count for a tokenized stock in the first place since it's off chain and the CEX is responsible for it.
I don't think it's that big of a bad news since RWAs are dealing with tbills to issue their stablecoin anyway which dominates big part of their business not stock.