Norway’s giant investment pool, officially known as the Government Pension Fund Global, is proposing a noticeable change in how it holds bonds. The fund’s manager, Norges Bank Investment Management, has asked the country’s finance ministry to lower the share of government bonds in its bond benchmark from 70% to 50%. The move would mainly reduce holdings of U.S. Treasurys, the largest single piece of that government bond sleeve, while adding other types of U.S. debt such as corporate bonds and mortgage-backed securities.
The scale is large enough to matter. Based on current positions, the shift implies cutting roughly $80 billion from the fund’s U.S. Treasury holdings over time, part of a broader reduction in global sovereign bonds. At the same time, overall exposure to the U.S. dollar would barely change because the fund would replace Treasurys with other dollar-denominated assets inside the bond portfolio. The managers say the change can be done gradually to avoid disrupting markets and to keep transaction costs in check.
The reasoning starts with the three jobs that bonds are supposed to do inside the fund. They are meant to smooth overall returns, provide liquidity when the fund rebalances between stocks and bonds, and earn extra return through risk premiums available in different parts of the bond market. The managers argue that holding bonds at all is what mostly reduces volatility, not whether those bonds are all sovereign issues. Their simulations suggest that a 50% government bond share still leaves a comfortable buffer to meet liquidity needs, even during turbulent periods.
That opens room to pursue the third job more actively. By adding segments like mortgage-backed securities and government-related bonds, the fund can tap into different sources of return, such as prepayment premiums and small liquidity or credit premiums, without giving up too much of the stabilizing effect that high-quality bonds provide. The proposal also switches the weighting rule for government bonds from gross domestic product weights to market-value weights, on the view that high public debt is now common across developed economies rather than limited to a few countries.
The backdrop includes strong recent performance from the fund’s equity book, which has been lifted by large positions in U.S. and Asian technology companies and other beneficiaries of the artificial intelligence boom. That success has come with concentration risk. Internal stress testing has warned that a sharp correction in AI-related stocks could erase hundreds of billions in value, which adds urgency to diversifying return sources across the portfolio. In that context, trimming Treasurys and broadening the bond mix is less about abandoning safety and more about using the fund’s long-time horizon to earn a wider set of risk premiums while keeping enough high-quality bonds for stability and liquidity.
The final decision rests with Norway’s Ministry of Finance. If approved, the new bond benchmark would be implemented in stages, with the fund aligning its holdings over time rather than all at once. For now, the proposal signals a quiet but meaningful shift in how one of the world’s most influential investors thinks about government debt, U.S. Treasurys in particular, and the role of bonds inside a massive, equity-heavy portfolio.
