Euro Zone Bond Yields Edge Up as US Inflation Holds Steady

Euro zone government bond yields ticked higher on Wednesday, reacting to US inflation data that came in slightly firmer than forecast. The yield on Germany's 10-year benchmark bond, a key reference for the region, rose 2 basis points to 3.22%, partially reversing the previous session's decline.

US consumer prices held steady at an annual rate of 3.7% in July, defying economist expectations of a modest cooling to 3.6%. Given the size of the American economy and the influence of the Federal Reserve, US data often sets the tone for global markets, including European debt.

Meanwhile, oil prices extended their decline for a third consecutive session, with Brent crude falling about 1% to $87.80 a barrel. The drop came amid growing speculation that an agreement could be reached to reopen the Strait of Hormuz, a critical shipping lane for global oil supplies.

Iran and Oman are reportedly still working through the details of a potential arrangement, according to a senior Iranian source. Iran's Revolutionary Guards had earlier suggested a deal had been reached on sharing the waterway and its revenues. However, Tehran has maintained that the strait will not reopen unless the US meets its conditions.

Analysts at ING cautioned that even a formal agreement would not immediately restore previous oil flow volumes through the chokepoint. They noted that a return to normalisation would likely require the US to lift its blockade on Iranian ports and ease sanctions.

In the broader picture, euro zone bond yields have climbed to multi-year highs over the past week and a half, driven by concerns over persistent inflation and elevated government spending. Germany's 10-year yield touched a 15-year peak of 3.275% last week, while the 30-year yield also reached its highest level in 15 years at 3.787%.

Attention now turns to the European Central Bank's September meeting. Sources indicate that policymakers are prepared to raise interest rates again to counter the inflationary side-effects of the Iran conflict, though there is little appetite to signal further tightening beyond that point. Money markets currently price in roughly 40 basis points of additional ECB tightening by year-end, with about a 95% probability of a rate hike next month.