Caledonia Investments saw its full-year net asset value (NAV) increase thanks to a strong investments portfolio.Its total NAV increased 14.2% while revenue rose 18% to 227.9m. Pre-tax profits were up 13% to £204.5m.The company posted strong returns driven by its unquoted and funds pools thanks to Capital Today China and its investment in JD.com.However, the group said it still faces uncertainty with the US presidential election coming up next year.Chief executive Will Wyatt said: "This has been a very strong year for Caledonia, with our portfolio delivering a healthy 14.2% return for shareholders, taking our total NAV to another record high and extending our ten year market outperformance."Wyatt added that its full-year performance was "well ahead" its objective, which drove its dividend up by 3.1% to 50.6p.Shares in Caledonia were up 1% to 2405p on Wednesday at 08:43.