The Regulation Post is the limbo world for Assets with no Entrepreneur, meaning if no one has ownership of their tenth control stock then this is where they wait until someone does.

Two possible ways for this stock's ownership to be gained are either being given this Asset upon becoming an Entrepreneur or buying it while the Asset is in the Regulation Post.

It is never shown in the series, so its looks are unknown. It is also unknown whether all Entrepreneurs are given new Assets or if the old ones are recycled, and it is also unknown what the exact rules for buying an uncontrolled Asset's tenth stock are.