In 1973, he co-founded the paper distribution company Dimar (Distribuidora Matte Ruiz-Tagle) together with Arturo Matte Lecaros. In 1978, Ruiz-Tagle sold his stake in Dimar to Matte Lecaros, In 2003, 50% of PISA was acquired by the Swedish multinational Svenska Cellulosa Aktiebolaget (SCA) for US$55.3 million. After serving in Sebastián Piñera’s administration, in 2014 he resumed activities at his investment office, which had been managed by his children during his time in government. In August 2014, the right-wing digital outlet
El Líbero was launched, of which he is co-owner along with
Hernán Büchi and lawyer José Antonio Guzmán. In November 2014, it was announced that he would join as a financial partner of the Ciudad Deportiva Iván Zamorano.
Colo-Colo In March 2006, he joined the board of Blanco y Negro S.A. (ByN), the company that administers the football club
Colo-Colo, and on 16 November 2006 he became its largest shareholder, with a 24.5% stake. In April 2007 he assumed the presidency of ByN. Upon being appointed director of Chiledeportes in 2010, he resigned from the club’s presidency, and later that year sold his shares. == Political career ==