Norway’s $2.3 trillion sovereign wealth fund has proposed a significant reduction in its allocation to government bonds, with U.S. Treasurys set to bear much of the cut, as the world’s largest sovereign investor seeks to diversify its portfolio, limit concentration risks and improve long-term returns.
The heads of Norges Bank Investment Management (NBIM), which manages the fund, recommended in a letter to Norway’s Finance Ministry made public Friday that the government bond component of its fixed-income portfolio be reduced from 70% to 50%.
NBIM said a 50% allocation would still provide sufficient liquidity during periods of severe market stress while giving the fund greater scope to invest in assets offering higher returns. Under the proposed changes, the fund’s allocation to U.S. Treasurys would fall from 34.1% to 21.9%, while its euro-area government bond allocation would decline from 16.8% to 14.1%. Its holdings of Japanese government bonds, meanwhile, would rise to 7.4% from 4.6%.
The proposal comes at a particularly sensitive moment for the U.S. government bond market, where long-dated Treasury yields have climbed to decade-high levels as investors reassess the sustainability of U.S. fiscal policy, rising government debt and the ability of traditional buyers to absorb the growing supply of Treasurys.
The move by Norway’s fund does not amount to a wholesale retreat from U.S. fixed income. Instead, NBIM plans to redirect a substantial portion of its bond allocation toward nongovernment securities, including corporate debt and mortgage-backed securities.
Its allocation to nongovernment U.S. fixed income would rise to 27.6% from 16.2%.
Mohamed El-Erian, the economist and Allianz chief economic adviser, said Friday that the significance of the Norwegian fund’s decision extends beyond the amount of Treasurys it may ultimately sell.
“Reliable buyers and holders of U.S. Treasurys are under pressure,” El-Erian told CNBC’s Carolin Roth, pointing to Japan, China and Gulf countries as examples of traditional holders facing changing economic or geopolitical incentives.
Addressing Norway’s proposed reduction in Treasury holdings, El-Erian said: “The size isn’t big, but the signal that traditional holders and buyers are becoming less reliable is a very important one.”
The concern for the Treasury market is therefore less about the immediate impact of one investor and more about what happens if several large foreign holders simultaneously become less willing to increase their exposure to U.S. government debt.
NBIM said its proposed changes are also designed to address a structural problem in the way its government bond portfolio is allocated. The fund wants to move away from weighting sovereign debt primarily according to countries’ gross domestic product and instead use market-value weighting.
The change reflects the fund’s assessment that high debt burdens have become widespread across developed economies, making GDP-based allocations difficult to justify from a portfolio-risk perspective.
NBIM chief executive Nicolai Tangen and Norges Bank Governor Ida Wolden Bache also argued that the fund could capture higher risk premiums by expanding into assets such as mortgage-backed securities.
Mortgage-backed securities, which became synonymous with systemic risk during the 2008 global financial crisis, could offer the Norwegian fund a different risk profile because they have historically tended to behave differently from equities during periods of market stress.
Tangen and Wolden Bache said that characteristic could provide an “additional reduction of volatility,” making mortgage-backed securities more comparable to government bonds in a diversified portfolio than conventional corporate bonds.
Analysts see the strategy as a reflection of the unusual position occupied by Norway’s sovereign wealth fund. Because it invests with a very long time horizon and does not face the same liquidity requirements as many private investors, NBIM can tolerate some assets that may be less liquid or more volatile in normal markets in exchange for potentially higher long-term returns.
The fund currently holds about $1.65 trillion in equities and $592 billion in fixed-income assets. Its equity portfolio gives it ownership of almost 1.5% of all listed companies globally, making NBIM one of the most influential institutional investors in international markets.
Established in 1998 to invest Norway’s oil and gas revenues, the fund was designed with strict investment rules intended to preserve the wealth generated from the country’s natural resources for future generations.
Its enormous equity exposure has benefited from the powerful rally in U.S. and Asian technology stocks and companies positioned to profit from the artificial intelligence investment boom. Those gains, however, have also increased the fund’s exposure to a potential reversal in some of the market’s most crowded trades.
Tangen has repeatedly warned that the extraordinary returns generated by technology and AI-related assets should not be expected to continue indefinitely.
That vulnerability was demonstrated in the first quarter of 2025, when the fund recorded a loss of about $40 billion as investors rapidly reduced exposure to riskier assets. NBIM’s own stress testing also highlights the scale of the risk. A severe correction in artificial-intelligence-related assets could reduce the value of the fund by an estimated $740 billion, equivalent to about 35% of its portfolio.
Against that backdrop, the proposed bond reallocation represents more than a tactical adjustment to government debt. It is largely seen as part of a broader attempt to build a portfolio capable of absorbing large shocks while reducing reliance on any single asset class or sovereign issuer.
For the U.S. Treasury market, however, the decision comes with an important message. The world’s largest pools of capital are becoming more sensitive to the combination of elevated government debt, increased bond issuance and changing risk-return calculations.
Norway’s fund is not proposing to abandon Treasurys, which remain among the world’s most liquid and important safe-haven assets. But its decision to reduce their weight while increasing exposure to other forms of fixed income illustrates how even the most conservative institutional investors are reassessing the role of government bonds in a world of higher debt and potentially higher long-term yields.
The implication for Washington is significant because as public debt and Treasury issuance expand, the government may have to compete for capital with corporate borrowers and other assets offering investors higher returns. That could keep pressure on long-term borrowing costs even if inflation and short-term interest rates eventually moderate, making the Treasury market increasingly sensitive not only to Federal Reserve policy but also to the portfolio decisions of the world’s largest institutional investors.






