The advisory firm said 53 per cent of its high net worth clients said they were "bullish" about the investment outlook for the next 12 months.
The firm surveyed over 300 HNW clients (those with over £1m in investible assets) for the survey which looks at investors' attitudes to risk for the year ahead.
The figure was up from 49 per cent in March 2012 and 44 per cent in March 2011.
The last time the figure was higher was in March 2010 when 55 per cent of clients said they were feeling bullish.
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Nigel Green, group chief executive of deVere Group, said he felt the optimism was due to the international economic climate.
He said: "The upbeat sentiment is, I suspect, influenced by the Eurozone being seen to take positive steps to tackle its crisis, the fact the US did not fall over the fiscal cliff and because central banks are claiming to be going all-out to stabilise their respective economies, factors which have removed some of the lingering uncertainty.
"These people understand that we've left the darkest days of the economic crisis behind and that in order to safeguard their wealth against inflation, they now need to reduce their exposure to safe investment such as government bonds and inrease their holdings of higher risk/higher return investments."

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