Spanish Markets Retreat as Trade Tensions With U.S. Flare

The IBEX 35 index closed down 2.6%, recording its steepest single-day decline since March. Banking giants bore the brunt of the selloff, with Banco Santander shares dropping 4.3% and BBVA sliding 3%. Heavyweight retailer Inditex fell 3.6%, while telecommunications provider Telefonica retreated 1.1%. The broader STOXX 600 index also faced downward pressure, slipping 1.6% as market sentiment soured across the continent.

Debt markets mirrored the volatility in equities. Yields on Spain’s benchmark 10-year Bono climbed 9 basis points to 3.565%, widening the borrowing premium over German Bunds to 49.2 basis points. Credit default swaps, which gauge the cost of insuring against a sovereign default, hit a one-month high of 15.6 basis points. This latest confrontation stems from the Spanish government’s refusal to grant the U.S. military access to bases for operations related to the conflict in Iran, a stance that previously prompted threats of a full trade embargo earlier this year.