Chris Taylor, manager of the Neptune Japan Opportunities fund, has warned Japan may face downgrades to its credit rating and see its currency weaken after last week's earthquake.
The £1.14bn Witan Investment Trust has raised its dividend 3.8% in 2010 after outperforming its benchmark.
UK blue chips made small gains in early trading after heavily sold-off Japanese shares ended a three-day rout to climb sharply overnight.
Jupiter's John Chatfeild-Roberts upped exposure to Japan in his £6bn Merlin multi-manager range in February with the addition of the GLG Japan CoreAlpha fund.
UK shares fell nearly 2% at opening after a third explosion at the Fukushima nuclear power plant in Japan sent the Nikkei tumbling overnight.
Nomura predicts the devastating earthquake and tsunami in Japan will cut between 0.5% and 1% off the country's GDP next quarter.
Thames River Capital boss Charlie Porter has sold F&C shares worth around £1.7m after investing in a number of the group's funds.
Legg Mason's Bill Miller is calling time on the commodities bull market and says he expects prices to peak within the next two years.
Henderson Global Investors has confirmed a raft of changes to be made to the Gartmore fund range following the takeover of the group.
Gartmore fund managers Leigh Himsworth, John Anderson and Dan Roberts are among seven exiting the firm as Henderson reveals its new line up.