Speculation is mounting that Thiess Pty Ltd. is considering a buyout of MACA Limited (ASX:MLD). Suggestions surfaced in July 2021 that a party was running the ruler over Maca, and at that time its share price was around 84c. Its shares last traded at 76c with its market value now at $261 million. The latest talk is that Thiess is taking a look at the business with the view of an acquisition to reduce the proportion of earnings it gets from coal-related activities. The thinking is that the idea is to pivot the business away from coal ahead of plans by its owners, CIMIC Group Limited (ASX:CIM) and Elliott Advisors (UK) Limited (Elliott Management), to sell the business at a later stage.