add holding company to ATS filters

In Advanced Title Search, please add a filter for "holding company" (in addition to the one for companies).  For example, I want to filter for NBCUniversal Media, LLC (including its subsidiaries, such as Universal).  Currently, my search has to select one of its subsidiaries before selecting another subsidiary to search again.

With this idea, I'd be able to easily filter for titles that are exclusive in the NBCUniversal's Peacock streaming service.