John Fredriksen and his family have already seen quick returns after launching a new investment company to diversify their interests.

The move was announced in September by Fredriksen's private Seatankers shipowning company, but now the new investment vehicle has been formally established in Oslo under the name Aeturnum Capital.

The branding signifies "eternity", indicating the long-term nature of the investments.

The focus is on private and public "high-quality companies" across the Nordic region, overseen by fund manager Vegard Soraunet, 40.