Oct 3 (Reuters) - Aeris Industria e Comercio de Equipamentos para Geracao de Energia SA: * BTG PACTUAL CUTS STAKE IN AERIS TO 24.99%, CONTROLLING SHAREHOLDERS INCREASE STAKE TO 51.8% - FILING Source text: Further company coverage: (Reporting by Sao Paulo newsroom) (The article has been published through a syndicated feed. Except for the headline, the content has been published verbatim. Liability lies with original publisher.)