France's Debt Crisis Drags the IBEX 35 Below 19,000: Banks Take the Hit
France's 10-year bond yield hit 4.96%, its highest since 2002, and its spread over Germany is near 2012 levels. The contagion is hitting Spanish banks, and the IBEX 35 opened below 19,000 points, at its lowest since June.
French Debt Puts Spanish Stocks Under Pressure
The strain in France's government bond market has spilled across the Pyrenees. The IBEX 35 closed Wednesday, October 7, down 1.68% at 19,118, and opened Thursday, October 8, down about another 1%, below 19,000 (18,923.10 in early trading), at its lowest since June. The driver is a heavy sell-off in French bonds: France's 10-year yield reached 4.96% on October 1, its highest since July 2002, and banks have become the main channel of contagion into Spanish stocks.
What's Happening in France
The French bond sell-off accelerated on October 1, the day the government unveiled its 2027 budget proposal. Investors doubt that Paris can cut its deficit with a minority government and a divided parliament, just months before the April 2027 presidential election.
The budget's own numbers explain the skepticism:
- Public debt is set to rise to 121.7% of GDP in 2027, up from an estimated 119.3% in 2026.
- The deficit only narrows from 5.4% to 5% of GDP. The goal of getting back below 3% has been pushed back to 2029.
- The plan includes €54 billion in fiscal adjustments, €43 billion of it in new measures, split roughly 60% spending cuts and 40% revenue.
- Interest costs will climb from €62.6 billion this year to €72.9 billion in 2027, according to the French Treasury.
- France's debt agency plans a record €340 billion of medium- and long-term issuance in 2027.
The Spread Over Germany Is Back at 2012 Levels
The figure that worries markets most is the spread between French and German 10-year bonds, France's equivalent of a risk premium. On October 1 it reached about 127-133 basis points, depending on the source, its widest since 2012, at the height of the euro crisis. On October 7, French 10-year bonds yielded 4.83% versus 3.49% for German Bunds, a spread of 134.4 basis points. Some analyses estimate the spread has widened by about 66% in just one month.
There's an important nuance: analysts see the risk of default as limited. The short-term spread is much narrower than the long-term one and far from the extremes of the European debt crisis. What the market is pricing in is mainly political gridlock and the lack of a credible plan for the debt.
Why Banks Are Taking the Hit
Banks are the most exposed sector when sovereign debt comes under stress. European banks hold large amounts of government bonds, and when those bonds lose value, investors worry about the banks' capital and funding costs. An episode like this also revives memories of the "doom loop" between banks and governments during the euro crisis, when problems in public debt and in banks fed off each other. According to financial press reports, since October 2 the French bond sell-off has spread to bank stocks.
On the IBEX 35, the damage has been clear:
| Stock | Wednesday, Oct 7 (close) | Thursday, Oct 8 (open) |
|---|---|---|
| CaixaBank | -3.52% | -1.64% |
| BBVA | -3.50% | — |
| Unicaja | -3.42% | — |
| Bankinter | -3.25% | — |
| Santander | — | -2.2% |
| ArcelorMittal | -4.53% | -2.1% |
| Solaria | -3.51% | — |
| Acerinox | — | -1.62% |
On the upside at Thursday's open, Repsol (+1%) was supported by oil prices, and Enagás rose 0.6%.
A Global Backdrop That Doesn't Help
France isn't the only source of stress in bond markets:
- The U.S. 10-year Treasury yield touched about 5.35% on October 7, its highest since 2002, before easing after a well-received auction.
- Oil is back above $100 a barrel on escalating tensions with Iran and attacks on tankers in the Strait of Hormuz.
- The ECB has its deposit rate at 2.50% after raising it in September, with inflation still well above target.
In Spain, the 10-year bond yield closed at 4.167% on October 1, close to its 52-week high of 4.219%, according to Investing.com.
Data Snapshot
| Indicator | Value |
|---|---|
| IBEX 35, September 28 close | 19,600.3 |
| IBEX 35, October 7 close | 19,118 (-1.68%) |
| IBEX 35, October 8 open | 18,923.10 (-1.02%) |
| IBEX 35 year-to-date high | 20,356.50 |
| French 10-year yield (October 1 peak) | 4.96% (highest since 2002) |
| France-Germany spread (October 7) | 134.4 bp |
| U.S. 10-year yield (October 7) | ~5.35% (highest since 2002) |
| France's projected 2027 public debt | 121.7% of GDP |
Sources: El Español, Okdiario, elEconomista, Investing.com and Estrategias de Inversión for the IBEX 35 and individual stocks; Investing.com, Euinsider, roic.ai, EFG International, El Debate, Moncloa.com and ideal-investisseur.fr for French debt and the spread; elEconomista, Infobae and FXStreet for the 2027 budget proposal; CNBC and Forbes for U.S. Treasuries; CNBC for oil. Spread figures vary by source and time of measurement. The IBEX 35 close for October 8 was not available at the time of writing. This article does not use Alpha Vantage data.
Key Levels and Things to Watch
- 19,000 on the IBEX 35: reclaiming it at the close would be a first sign of stabilization; staying below it would open the door to a deeper correction
- 19,718: according to Ecotrader's technical analysis, a deeper correction can't be ruled out until the IBEX clears this level
- 5% on the French 10-year: breaking above it would push the yield to its highest in more than two decades
- France's budget debate: analysts warn that a failed budget, a government collapse or a highly polarized election campaign could widen the spread further
- Spanish banks: they are the best gauge of contagion; a stabilization in bank stocks would be the clearest sign the worst is over
What It Means for Investors
Episodes like this show how a problem that looks local, such as one country's budget, can spread across Europe through government debt and banks. For investors in Spanish stocks, the risk isn't so much that Spain has its own debt problem today, but that markets start lumping southern European countries and their banks together again, as they did in 2011 and 2012.
It's also worth keeping perspective. Unlike back then, analysts see the risk of a French default as limited, and the short-term spread remains far from the extremes of the euro crisis. For now, the drop in bank shares reflects fear of contagion more than any known deterioration in their finances.
Conclusion
Distrust in France's public finances, with debt heading to 121.7% of GDP, a deficit stuck around 5% and a government without a majority, has pushed French bond yields to their highest since 2002 and the spread over Germany back to 2012 levels. The contagion has reached Spanish stocks through the banks: the IBEX 35 has lost the 19,000 mark and is trading at its lowest since June, more than 1,400 points below its high for the year. With U.S. Treasury yields also at 24-year highs and oil above $100, the course of the budget debate in Paris will be key to whether this is a passing episode or the start of a new phase of stress in European debt.