FRANKFURT, May 27 - The European Central Bank said in its biannual Financial Stability Report that the ongoing conflict in Iran and continued trade tensions have the potential to weaken economic growth in the euro zone, increase borrowing costs and strain some member states' ability to maintain public finances.
Despite these risks, the ECB noted that financial markets have, so far, largely ignored the fallout from the Iran war. That has left equities trading at elevated valuations, corporate borrowing costs subdued and the spread between sovereign bond yields across the 21-nation bloc at relatively narrow levels. The central bank said this situation raises concerns that investors could be underestimating the risk environment.
"A scenario of notably weaker growth associated with a more persistent energy shock could trigger a reassessment of fiscal sustainability and an abrupt repricing in sovereign bond markets," the ECB said.
The report warned that such an abrupt repricing of sovereign debt could feed through to higher corporate borrowing costs, creating a feedback loop that might threaten financial stability and harm the real economy. The ECB emphasized that the risk is acute because governments are already committed to financing a lengthy list of urgent projects, which reduces fiscal buffers and limits flexibility.
"High sovereign financing needs related, among other things, to defence spending, the green transition and potential fiscal measures to cushion households and firms from rising energy prices, are likely to add to pressures over the medium term," the central bank added, highlighting several channels that could increase sovereign funding requirements.
The ECB also raised concerns about the growing footprint of hedge funds in government bond markets. While hedge funds can bolster liquidity in stable conditions, the central bank pointed out that they are frequently highly leveraged, which makes bond prices more vulnerable to shifts in investor sentiment. This heightened sensitivity could amplify market moves in times of stress.
Any selloff in debt markets may be worsened by relatively opaque non-bank financial intermediaries. The ECB noted these entities typically display lower liquidity, higher leverage and lighter regulation compared with traditional banks. Given their extensive connections with conventional lenders, distress among non-bank intermediaries could transmit to the broader banking sector, potentially infecting otherwise healthy institutions.
"The potential for these highly interconnected risks to materialise simultaneously, possibly amplifying each other further, increases the risks to financial stability," the central bank said.
Adding another layer of vulnerability, the ECB warned that doubts about debt sustainability in the United States could have spillover effects for Europe. U.S. Treasuries have functioned as a safe haven, but a loss of confidence in U.S. budget policy credibility could prompt an abrupt change in global investor perceptions and affect markets worldwide, the ECB said.
The report also drew attention to market signals indicating growing reliance by AI-related firms on debt financing, a development the ECB said merited monitoring. The central bank did not elaborate further on specific exposures, but it flagged the trend as one of several areas requiring attention in the current risk landscape.
Overall, the ECB portrayed a financial system in which compressed risk premia, significant sovereign financing needs and the expanding role of leveraged, less regulated market participants could combine with geopolitical and trade stressors to produce sudden and wide-ranging market disruptions.