Not sure if it's been brought up before or how feasible it is. Might require a lot of programming for something pretty minor. Would be great to see a list of this somewhere on the security's page though, similar to how OW derivatives have the "related securities" section. Much quicker than going fund by fund and searching through their holdings.
Would make it easier to invest in a moviestock in more ways if you believe it will have a large movement. Also could make it easier to police whether funds are investing in their allowed securities.