By Alice Gledhill and Alice Atkins Traders are on the alert for signs of contagion in Europe’s government bond market after a selloff triggered memories of the region’s debt crisis 15 years ago.

Up until last week, the bonds of euro-area members had largely retreated in lockstep for much of the year — the result of an energy shock that’s fueled inflation fears and forced the bloc’s central bank to hike interest rates. France was the clear underperformer as budget squabbling and a contentious election added to the global headwinds. On Thursday, something snapped: French bonds tumbled further along with the likes of Italy, Belgium and Greece, recording some of their biggest spread moves in years.

Germany, however, withstood the pain among big economies as investors piled in to the traditional safe haven, a search that also boosted recently-weak US Treasuries. France’s Bond Crisis Deepens as Investors Head for the Exit A scenario in which financial stress in one sovereign bond market infects others, even when it looks less warranted, generates the kind of chaotic price moves that worry central bankers, forcing them to step in during severe scenarios.

It was a feature of the euro area’s debt crisis of 2011-2012. “We are starting to see first signs of contagion,” said Jeff Mueller, co-head of fixed income, Morgan Stanley Investment Management. “If the erratic price action observed on Oct. 1 continues for some time, this may draw some attention from policymakers.”

France has plenty of company in the euro area when it comes to excessive borrowing, large budget deficits and fierce political opposition to economic reforms. The heavy debt load of countries like Italy and Belgium makes them particularly vulnerable in a world of higher interest rates. To be sure, spreads for the most part still remain relatively low across the continent and the rout largely stabilized on Friday, with longer-dated bonds in particular recovering.

But the pace and extent of the swings have left investors on edge and on the lookout for further signs of disorder. Ahead of the weekend, market chatter focused on a possible response from the ECB. One option would be for officials to send a stronger signal that they’ll be more cautious about lifting rates further.

Traders have already started paring wagers on further hikes, with swaps pointing to three increases by the end of next year compared with four earlier in the week. “OAT volatility could be a limiting factor for further ECB hikes and is an argument against a back-to-back move later this month,” said Anthony O’Brien, head of market strategy at Standard Life, referring to French government bonds.

“Higher rates mean higher debt-servicing costs, which in turn increase fiscal pressure on France.”

Europe’s Bond-Spread Blowout Prompts Bets on Fewer ECB Hikes If the signs of contagion intensify, the ECB may consider pausing its quantitative tightening program, which stops the reinvestment of proceeds from maturing bonds it holds, according to Jamie Searle, rates strategist at Citigroup Inc. That would effectively reduce the supply of bonds that must be absorbed by price-sensitive investors. Most of the market’s focus has been on the ECB’s Transmission Protection Instrument, an unlimited bond-buying program created in 2022 to “counter unwarranted, disorderly market dynamics.”

It’s never been used, though its existence is considered a key reason why a full-blown bond crisis is much less likely now compared with 15 years ago. For France, the TPI would almost certainly be out of reach given its problems are largely self-inflicted. Bank of France Governor Emmanuel Moulin has warned his compatriots against expecting a “miracle solution” to come from the ECB.

At the same time, it could be deployed if the selloff starts to look increasingly untethered in other parts of the market. Why Europe Has a New Weapon for Bond ‘Fragmentation’: QuickTake“If the French election outcome results in contagion to other markets, the ECB may consider supporting them, but not OATs,” said Rohan Khanna, head of European rates strategy at Barclays.

“There are no easy choices for the central bank.”The week’s wild swings were attributed, in part, to the growing footprint of hedge funds in government bond markets. In particular, so-called carry trades where investors harvest the higher yields available on Italian, Spanish or French bonds have grown in popularity, particularly on short-dated debt.

While those trades can prove profitable when volatility is low, market watchers said the ructions of the past week led to a broad washout of leveraged positions — exacerbating the selloff.

“Trust me: the ECB is on top of this — they’re talking to market participants all the time, including hedge funds,” said Marion Le Morhedec, global chief investment officer of fixed income at Fidelity International.

“They really want to understand what’s happening and they are ready to do whatever it takes to avoid any big blow ups.”