Although Porsche is owned by Volkswagen Group, is the Volkswagen Group owned by Porsche Holdings?

No, Porsche Holding SE is not the owner of Volkswagen Group. In fact, it's the other way around: Volkswagen Group is the parent company of Porsche AG, the subsidiary that produces Porsche cars.

Porsche Holding SE is a separate company that is primarily involved in automotive retail and operates dealerships for various brands, including Porsche, Volkswagen, Audi, and others. It does have a significant ownership stake in Volkswagen Group, however, with a voting stake of around 53%