Oil Shock Extends Treasury Selloff Across Global Bonds

A sharp rise in oil prices is extending a major sell-off across global government bond markets, pushing U.S. Treasury yields towards the closely watched 5% level as investors reassess inflation and interest-rate expectations.

Brent crude surged to a four-month high of $109.97 a barrel on Friday and was on track for a weekly gain of around 13%. The increase has been driven by the ongoing Middle East conflict, attacks around major shipping routes and growing concerns about prolonged disruptions to global energy supplies.

The oil shock is creating a difficult environment for central banks because higher energy costs can feed directly into inflation while also weakening economic growth.

Treasury Yields Move Towards 5%

The U.S. Treasury market has been at the centre of the latest global bond sell-off.

The 10-year Treasury yield climbed as high as 4.979%, its highest level since late 2023, bringing the benchmark within striking distance of 5%. The two-year Treasury yield, which is more sensitive to expectations for Federal Reserve policy, also reached its highest level since July 2024 at 4.596%.

The 5% level is particularly important for investors. A sustained move above it could make government bonds increasingly competitive with equities, potentially encouraging some investors to shift capital away from riskier assets.

Higher Treasury yields also affect the wider economy because they influence mortgage rates, consumer loans, corporate borrowing costs and government financing expenses.

Global Bond Markets Under Pressure

The sell-off has not been limited to the United States.

Benchmark 10-year government bond yields across the G7 economies have risen by an average of nearly 19 basis points this week, while two-year yields have increased by around 22 basis points. Reuters described the move as the worst weekly sell-off since the Middle East war began more than six months ago.

Japan’s 10-year government bond yield climbed to around 2.97%, while Germany’s 10-year Bund yield remained close to its highest level since 2011. French government bond yields also remained near multi-year highs.

The simultaneous rise in yields reflects a combination of factors, including higher energy prices, persistent inflation concerns, expectations of tighter monetary policy and worries about government borrowing.

ECB and Other Central Banks Add to Pressure

The European Central Bank raised interest rates on Thursday and signalled that inflationary pressures could remain persistent if energy prices stay elevated.

That has reinforced expectations that other major central banks may also have to maintain or increase borrowing costs despite concerns about economic growth.

For markets, the combination of expensive oil and more hawkish central banks creates a challenging backdrop for both bonds and equities.

Oil Prices Change the Fed Outlook

The biggest immediate policy concern is the impact of higher oil prices on U.S. inflation.

Brent crude has moved well above $100 as the Middle East conflict threatens important energy and shipping routes. At the same time, U.S. producer prices increased in August, adding to concerns that inflation may prove more persistent than previously expected.

Markets are now pricing around a 72% probability of a Federal Reserve rate hike at the following week’s meeting, compared with 49% a week earlier.

That represents a significant change in expectations. Investors had previously been focused more heavily on the possibility of lower interest rates, but the energy shock is forcing markets to reconsider the path of U.S. monetary policy.

Why the 5% Treasury Yield Matters

A sustained break above 5% could become an important turning point for financial markets.

Treasury yields provide a reference rate for many other financial assets. When government borrowing costs rise, companies generally face higher financing expenses and investors may demand greater returns from equities.

Higher yields can therefore place pressure on stock valuations, particularly for companies whose expected profits are heavily weighted towards the future.

At the same time, rising borrowing costs can increase pressure on governments with large fiscal deficits, creating another source of concern for bond investors.

What Investors Will Watch Next

The next major catalyst for markets is the U.S. consumer inflation report, which could provide further evidence about whether the oil shock is feeding into broader price pressures.

Investors will also monitor developments in the Middle East, particularly the security of major oil and shipping routes.

If crude prices remain above $100 for an extended period, central banks could face a difficult policy choice: raise rates to contain inflation or avoid excessive tightening that could damage economic growth.

For now, the global bond market is sending a clear warning. The combination of higher oil prices, persistent inflation and tighter monetary-policy expectations is pushing borrowing costs higher across major economies.

If the U.S. 10-year Treasury yield breaks decisively above 5%, the move could become an even more important driver of global asset allocation, equity valuations and currency markets.