Since 1974, Costanera S.A.C.I. has held an interest in Elecmetal S.A., which is owned by the Claro group, a conglomerate that engages in different lines of business, such as:
- Steel Foundry, through Elecmetal S.A. and its subsidiaries ME Global and Fundicion Talleres Ltd.
- Containers business, through its subsidiary Cristalerías de Chile S.A.
- Wine business, through its subsidiary Viña Santa Rita S.A.
- Media and communications business through its subsidiaries Diario Financiero (a financial newspaper), Zig-Zag S.A. (a publishing company), Capital magazine and others.