A Closer Look at Sovereign Wealth Funds

The Abu Dhabi Investment Authority, established in 1976, is the largest sovereign fund, with assets estimated at $500 billion to $875 billion, according to a widely cited analysis last August by Edwin M. Truman, senior fellow at the Peterson Institute for International Economics in Washington, D.C. Next is the $100 billion to $330 billion controlled by the Government of Singapore Investment Corp., founded in 1981. Singapore also runs $108 billion Temasek Holdings, started in 1974. Early in December, Temasek said it would provide $1 billion to a private-equity fund set up by Goldman Sachs Group (GS Quote) of the U.S. to invest in China.

Norway has $308 billion in its Government Pension Fund. Kuwait's two funds total $213 billion. Russia has a $122 billion fund, and China a $66 billion fund. Other big funds are run by Qatar, Algeria, Australia, Brunei, Korea, Malaysia, Kazakhstan, Venezuela, Canada, Iran and New Zealand.

Though the funds are typically found in countries with big trade surpluses, there is one in the U.S: the state-run Alaska Permanent Fund, founded in 1976 to reinvest oil profits.

The oldest major fund, Kuwait's General Reserve Fund, has been around since 1960. But the funds are getting more attention now because of their mushrooming size, thanks to soaring oil prices. Truman says the funds could grow even bigger if the countries that run them were to divert more of their foreign exchange reserves into them.

China, for example, has $66 billion in its sovereign fund, but more than $1.2 trillion in reserves, mostly invested in U.S. Treasury bonds. According to Allen, China might want to put more money into its sovereign fund for fear that more Treasury purchases would destabilize the Treasury market. "If they put it all into Treasury bonds , they are going to start having price effects," he says.

Reinvesting Oil Profits, for Now

Most of the sovereign funds that are soaring in size have rising oil prices to thank. In fact, it's no coincidence that the biggest funds belong to oil-producing states, which are using the funds to reinvest oil profits so there will be new sources of income when the oil is gone, Marston notes, adding that Norway's fund, considered the poster child of well-run funds, was established to reinvest North Sea oil profits. "They basically said, 'Well, we want to put some wealth aside rather than distribute it immediately, so we will have an annuity for the Norwegian people to make up for the fact that the oil is running out."

Countries that build up foreign-exchange reserves typically invest them in liquid assets like U.S. Treasuries. But once reserves are big enough to cover any short-term needs like currency intervention, countries feel they can afford to tie money up on long-term investments that offer better returns, says Wharton finance professor Richard J. Herring. "If you have your liquidity needs taken care of, then you start thinking about making longer-term investments. It's a very natural thing."