I could see a scenario where the “stocks” exist purely as a way to divvy up shareholder votes but without a financialized aspect. Of course, shareholders in this case would mean the mix of workers of the firm/institution/corpoation/whatever you want to call it, federal democratic will, local democratic will, particularly affected groups, environmental advocates, etc., not bourgeois investors. Those shareholders then select the equivalent of board members who select the equivalent of a chief executive officer (although in a socialist society I would think the title would be something more like “chief organizational director”, idk semantics aren’t the point). That way there’s public control over the means of production but not in a direct bureaucratic control way like you get with existent government agencies.