Lisbon, May 28, 2026 (Lusa) - The Lisbon stock market is trading lower on Thursday morning, in line with main European bourses, reversing its opening trend.

The PSI (Portugal Stock Index) fell 0.11% to 9,126.40 points around 9:20 a.m. in Lisbon, after starting the session in positive territory, with 10 companies falling, five rising and EDP maintaining its price at €4.42.

Jerónimo Martins was the only company with a change above one percentage point, losing 1.33% to €18.53 per share more than an hour after trading began.

Altri followed, losing 0.79% to €5.03, while Teixeira Duarte fell 0.68% to €0.44 and CTT declined 0.48% to €6.16.

Semapa and Mota-Engil each fell 0.42% to €23.85 and €4.77, respectively.

Ibersol (-0.17% to €11.76), Galp (-0.16% to €18.57), Corticeira Amorim (-0.15% to €6.67) and NOS (-0.10% to €5.26) saw smaller declines.

Conversely, BCP and Navigator led the gains, each rising 0.41% to €0.97 and €3.45, respectively.

EDP Renewables grew 0.28% to €14.20, Sonae rose 0.21% to €1.92 and REN increased 0.14% to €3.53.

Main European bourses traded in the red on Thursday morning, while oil rose more than 2% following new attacks between the US and Iran.

Investor optimism cooled on Thursday following Wednesday's gains, as new attacks in the Middle East raised doubts about a possible peace agreement in a conflict that has dragged on for three months.

US forces reportedly attacked facilities in southern Iran, describing the operation as an act of "self-defence."

Iran responded by attacking a US airbase and said it blocked the passage of four US vessels in the Strait of Hormuz.

The price of a barrel of Brent crude oil for July delivery rose again by around 2.5% to $96.65 following the attacks.

Texas crude, the US benchmark, grew 2.7% to $91.09.

The euro fell to $1.161 and gold dropped 1.46% to $4,388.1, while silver slid 1.69% to $73.37 and bitcoin lost 2.77% to $73,061.6.

JO/LYT // AYLS

Lusa