IBEX 35 closes lower as AI doubts cut 53 points
Published on 10/15/2026 at 22:57 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWSAI valuations and inflation
- IBEX 35 finished at 19,177 points, down 53 points or 0.3 percent on October 15, 2026.
- US inflation reached 3.7 percent in September, renewing pressure on AI-linked valuations.
- Cellnex led the IBEX 35 higher with a 3.6 percent gain.
- Eurozone inflation and trade data are due Friday, October 16, at 11:00 a.m. CEST.
The IBEX 35 closed at 19,177 points on October 15, 2026, down 53 points or 0.3 percent. Doubts about artificial-intelligence valuations pressured global technology shares after US inflation reached 3.7 percent in September, Europa Press reported.
Cellnex was the strongest IBEX 35 stock, rising 3.6 percent. Its advance, alongside Telefónica's gain, reflected the appeal of rate-sensitive telecom stocks, EFE said.
Why did the IBEX 35 fall?
The index followed heavy selling in Asian technology shares. XTB analysts linked the market reaction to concern that future AI profits may not justify current valuations while financing costs stay high, Europa Press reported.
The pressure intensified after US consumer prices rose 3.7 percent year over year in September. Softer sovereign-bond yields offered support, but they did not offset the technology-led retreat, El Boletin reported.
Winners and losers in the IBEX 35
The following closing moves were reported by EFE:
- Cellnex up 3.6 percent: telecom stocks benefited from lower yields.
- Telefonica up 3.0 percent: the rate-sensitive telecom stock advanced with Cellnex.
- Grifols up 2.9 percent.
- Ferrovial down 4.3 percent: its consortium won a US highway contract valued at USD 23.6 billion.
- Merlin Properties down 4.1 percent: AI concerns raised doubts about data-center demand.
- Rovi down 2.5 percent.
The IBEX 35 swings through 19,374 points
The index opened at 19,204 points and reached a high of 19,374 points before falling to a low of 19,119 points. It stayed positive until Wall Street opened, then turned lower, Expansion reported. The closing level and range were also reported by El Periodico de Ceuta.
The index remained up 10.8 percent for the year after the decline, according to EFE.
What comes next for the IBEX 35
- October 16, 2026, 11:00 a.m. CEST: Eurozone September inflation is due, with the preliminary annual rate at 3.8 percent, El Boletin reports.
- October 16, 2026, 11:00 a.m. CEST: Eurozone August trade data are scheduled, with a prior surplus of EUR 14.2 billion and a forecast of EUR 14.7 billion, ActionForex reports.
- October 16, 2026, 5:30 a.m. CEST: Federal Reserve Chair Kevin Warsh is scheduled to speak, Finobird reports.
