The average real price gain in years of Democratic presidencies has been 7%.
But there was no uncertainty about the share price gain at RSA Insurance.
Even so, in real terms the average price gain over the past few years has been the fastest in history.
Sun Microsystems, in second place, was the only one of the 28 most active issues to manage a price gain, up 50 cents, to $27.44.
offers "limited upside" in terms of share price gain, said Kevin Low, analyst at Affin Investment Bank, which is based in Kuala Lumpur.
But Atlanta has posted the largest price gain among the 20 cities over the last three months, according to Trulia, a housing analysis firm.
Sam Stovall, chief investment strategist at Standard & Poor's, points out that over 20-year periods since 1919, the average annual price gain for stocks has been 6.8 percent.
The recent strong oil price gain has helped push BP 0,3p higher to 490.45p while Royal Dutch Shell B shares have risen 15p to 2179.5p.
And fishing accessories retailer Fishing Republic has delivered a 22 per cent share price gain in just two months since floating.
Last year the median share price gain for companies that announced an acquisition was 1.11 percent, the most for any full year in the study.
And finally, soft drinks group A.G. Barr is leading the FTSE 250 with a 3.1% share price gain after posting a 20.8% rise in pre-tax profits to £27.9m.
