Aker is showing the world its money maker. The investment firm buys major stakes in and helps manage industrial and financial companies. Its target sectors are energy, environmental technology, marine biotechnology, fisheries, and finance. A long-term investor that holds on to its portfolio companies indefinitely, Aker is the largest shareholder in nearly 10 publicly traded firms, including engineering, construction, and energy group Aker Solutions, as well as Aker Clean Carbon and biotechnology firm Aker BioMarine. The company also owns fund managers Converto Capital Management, Norren Asset Management, and Oslo Asset Management, and invests in financial instruments such as interest-bearing receivables.