The phrase "extensive holdings" refers to a large or vast collection or ownership of various assets, typically including land, property, businesses, or other valuable possessions. Full definition
Among the strengths are 17th - and early 19th - century French works, including the most extensive holdings of drawings by Ingres outside of France, as well as significant groups of works by Géricault and David. (harvardartmuseums.org)
Exelon, headquartered in Chicago, is a $ 31 billion energy services and wholesale power firm with one of the nation's largest nuclear fleets, as well as extensive holdings in natural gas, wind and hydropower generation assets. (scientificamerican.com)
This museum has the most extensive holdings of biblical and Holy Land archaeology in the world. (travellermade.com)