Spreads between euro zone government bonds widened on Friday as investors rotated into German debt and away from higher-risk members including France, with price swings easing compared with Thursday, all while the bloc's consumer prices posted a notable rise.

On Thursday, a notable gap opened up between bond yields, with the divergence hitting hardest at the shorter end of the maturity curve. Two-year German bond yields retreated by nearly 14 basis points — their steepest single-session decline since April — with Dutch equivalents posting a drop of around 13 basis points, even as two-year yields on French and Italian debt moved in the opposite direction.

Bonds issued by Germany and the Netherlands tend to attract investors seeking lower-risk exposure, whereas those from France and Italy carry a higher perceived vulnerability tied to the scale of public debt each country holds relative to the size of its economy. Sovereign debt markets globally have faced downward pressure, with investors pointing to mounting fiscal imbalances, elevated energy costs, and the persistence of inflationary conditions as contributing factors.

By that afternoon, the gap had persisted, though with noticeably less force than before. Two-year German sovereign debt traded with yields roughly 5.8 basis points softer, settling near 2.9962%, whereas the equivalent French tenor moved in the opposite direction, adding around 6.7 basis points to reach 3.7608%. Two-year Italian government bonds edged fractionally lower, with yields settling at 3.6109%.

DZ Bank analyst Rene Albrecht described a shift toward lower-risk assets, noting that demand for haven instruments had moved into place. Bond yields tied to nearer-term maturities tend to track shifts in interest rate outlooks more closely than their longer-dated counterparts.

Futures markets wound down the week by dialling back their pricing on further interest-rate tightening from the European Central Bank. Markets are not yet fully accounting for another rate rise from the central bank before early 2027.

September's euro zone inflation reading, released on Friday, came in above what analysts had anticipated. Across the 21 countries that share the euro, consumer prices climbed to an annual rate of 3.8% in September, up from 3.2% the month before, with energy costs — particularly fuel and natural gas — along with food prices bearing most of the responsibility for an increase that outpaced the 3.6% forecast from a news channel poll.

The so-called core reading — which sets aside food and energy costs to give a picture of broader price pressures — ticked up to 2.5%, from 2.4% previously. A DZ Bank analyst described the core reading as pointing to an underlying inflation trend that had held broadly stable and was performing reasonably well given prevailing conditions, while attention later shifted to forthcoming US data expected to inform the broader global economic picture.

Yields on ten-year government bonds pulled apart from one another again when markets traded on Friday. Yields on German 10-year bonds fell by roughly 10 basis points to sit at 3.4178%, while their Italian counterparts shed around 3 basis points, settling at 4.6847%. Benchmark borrowing costs on French 10-year government bonds edged up by 1.5 basis points, settling at a rate of 4.9435%.

On Friday, the gap between French and German 10-year borrowing costs — a figure that reflects how much extra return investors require to hold French debt — climbed past 150 basis points, a level not seen since the tail end of 2011. Readings placed it at roughly 152 basis points.

Debt loads that analysts regard as elevated, combined with the political uncertainty surrounding a presidential contest set for 2027, have kept French government bonds under notable strain — a pressure that sits on top of the broader forces already bearing down on sovereign debt, including market expectations that policy rates will stay higher for longer. A deficit-reduction plan put forward by France on Thursday leans on expenditure cuts to achieve its targets, yet government debt instruments gave little indication that investors found the approach convincing.