Caledonian Investments has shown encouraging progress in the six months to 30 September, generating a total return of 4.6%.The firm posted an impressive 17.7% net asset value (NAV) per share total return for the twelve months to 30 September.Net assets at the end of the six month period totalled £1.49bn, while the firm also reported a record high NAV per share of 2,675p.Moreover, the board declared a 3% increase in the interim dividend to 13.8p per share, payable in January 2015.Chief executive Will Wyatt said: "Caledonia has delivered another good overall performance with a total return of 4.6% over the six months, resulting in our net assets approaching £1.5bn. Accordingly, we have increased the interim dividend by 3.0% to 13.8p."Whilst global markets remain uncertain, we are confident our long term investment strategy will continue to offer attractive returns for our shareholders."