Yes, "NATIONALUM" and "NALCO" refer to the exact same enterprise, with NATIONALUM serving as the official stock exchange trading ticker symbol for National Aluminium Company Limited. Headquartered in Bhubaneswar, India, NALCO is a premier Navratna central public sector enterprise specializing in bauxite mining, alumina refining, aluminum smelting, and power generation. On major Indian financial platforms like the National Stock Exchange (NSE), its shares are listed and traded under the abbreviated identifier NATIONALUM.