Rubles, rupees and renminbis will be a much bigger part of mom and pop's portfolio in less than 10 years as consumers become more tolerant of risk-taking and more knowledgeable about global economies, according to a study released on Monday.

According to the IBM Institute for Business Value study, worldwide investable assets such as stocks and bonds are expected to double by 2015 to almost $300 trillion.

By 2025, they will quintuple to nearly $700 trillion with 60 percent of future growth coming from Russia, India and China, among the top prospect markets.

That is more than twice the growth rate expected from developed markets like the United States, the study noted.

Of the nearly $700 trillion in global investable assets, equity markets are expected to capture about 64 percent while global fixed-income securities will garner the remaining assets.

Though the investable assets of traditional markets -- the United States in particular -- remain significant, by 2025, veteran markets will be rivaled by other markets with faster growing economies and increasingly sophisticated financial product appetites, the authors said.

There are already signs of the emerging global expansion in financial capital.

India now has the most billionaires among Asian nations, relegating Japan to second place, the study said.

Meanwhile, China currently contributes more than one-quarter of the world's gross-domestic product, and the IBM report expects China's contribution to rise 33 percent by 2025.

The study also said the so-called BRIC -- Brazil, Russia, India and China -- economies are not the only popular emerging markets.

The United Arab Emirates economy experienced a 21 percent annual growth rate between 2002 and 2005, outpacing China's growth of 18 percent in the same period.