A sovereign wealth fund (SWF) is an investment fund owned by a national or regional government and run separately from the central bank's day-to-day reserve management. SWFs take public money, often from oil and gas revenues, budget surpluses or excess foreign exchange reserves, and invest it for the long term in a broad range of assets: listed shares, bonds, real estate, infrastructure, private equity and venture capital. They are among the world's largest institutional investors.
The term was coined in 2005 by the analyst Andrew Rozanov, but such funds are much older; the Kuwait Investment Authority traces its origins to 1953. SWFs differ from public pension funds, which have specific obligations to retirees, and from central bank reserves, which are held mainly for liquidity and currency defence.
Sovereign wealth fund in plain terms
Imagine a family that suddenly earns a lot from renting out a field that will one day run dry. Spending it all at once would cause a burst of luxury followed by hard times. A wiser family puts much of the money into a savings pot, invests it, and lives partly on the returns, so that children and grandchildren benefit too.
A sovereign wealth fund is that savings pot for a country. Resource-rich states use it to turn oil or gas that will run out into lasting financial wealth, while others use it to put spare national savings to work rather than leaving them in low-yielding cash.
Types of sovereign wealth funds
- Stabilization funds. Hold money to smooth government budgets when commodity prices fall, as in Chile's Economic and Social Stabilization Fund.
- Savings or future-generations funds. Convert finite resource income into long-term wealth, such as Norway's Government Pension Fund Global.
- Reserve investment corporations. Invest part of a country's foreign exchange reserves for higher returns, such as Singapore's GIC and the China Investment Corporation.
- Strategic development funds. Invest at home to build industries and diversify the economy, such as Saudi Arabia's Public Investment Fund, Abu Dhabi's Mubadala and Singapore's Temasek.
- Pension reserve funds. Set money aside for future public pension costs without direct individual claims.
Some funds combine several roles. Funding sources also vary: commodity exporters are financed by oil and gas income, while Asian funds such as GIC are financed mainly by fiscal surpluses and reserves.
The largest funds
Norway's Government Pension Fund Global, managed by Norges Bank Investment Management, is the largest single SWF. Its value passed 20 trillion Norwegian kroner in 2024 and stood at about 22.7 trillion kroner on 30 June 2026, well over 2 trillion US dollars. It owns roughly 1.5% of all listed shares worldwide. Under Norway's fiscal rule, the government may on average spend only the fund's expected real return, set at 3% a year, which shields the krone and the economy from swings in oil income.
Other very large funds include the China Investment Corporation, the Abu Dhabi Investment Authority, the Kuwait Investment Authority, Saudi Arabia's Public Investment Fund, GIC, Temasek and the Qatar Investment Authority. Gulf funds together control several trillion dollars and have become major players in global deal-making and foreign direct investment.
New funds continue to appear. India set up the National Investment and Infrastructure Fund in 2015, Pakistan passed a Sovereign Wealth Fund Act in 2023 to hold stakes in state-owned companies, and in February 2025 a US executive order directed officials to draw up a plan for a federal sovereign wealth fund. Sub-national funds also exist, such as the Alaska Permanent Fund, which pays an annual dividend to residents.
Governance and the Santiago Principles
As SWFs grew in the 2000s, recipient countries worried that state investors might pursue political rather than financial goals, for example by buying stakes in strategic industries. In 2008, a group of funds working with the IMF agreed the Santiago Principles, 24 voluntary "generally accepted principles and practices" on legal framework, governance, transparency and investment policy. The International Forum of Sovereign Wealth Funds (IFSWF), set up in 2009, promotes them. Many host countries also screen SWF deals through national investment review bodies.
Transparency varies widely. Norway publishes every holding and has an independent Council on Ethics that recommends excluding companies on ethical grounds, an approach close to ESG investing. Others disclose little beyond headline figures.
Debates and criticism
Supporters see SWFs as a way to escape the resource curse, save for future generations, stabilise public finances and earn better returns than reserves held in short-term government paper. Critics raise several concerns from different angles:
- Political influence. Funds can blur the line between investment and foreign policy, a concern often discussed under state capitalism.
- Governance at home. Weak oversight can lead to losses or misuse, as in the 1MDB scandal in Malaysia, which was a state investment fund rather than a classic SWF.
- Opportunity cost. Some economists argue that poorer countries would gain more from investing at home in education and infrastructure, or from lowering debt, than from building foreign portfolios.
- Domestic mandates. Development funds can crowd out private firms or back projects chosen for prestige rather than return.