Who owns FIX protocol?

Can you tell me who owns the FIX protocol? I've heard a lot about it in the world of finance and trading, but I'm not entirely sure who is behind it or who has control over it. Is it a single entity, or is it a collaboration between multiple parties? I'm curious about the governance structure and how decisions are made about the protocol's development and updates. Can you provide me with some insight into the ownership and management of the FIX protocol?