The Stockholm Stock Exchange is trading higher at midday on Tuesday, building on Monday's momentum. The trend is mirrored across major European markets.

Support is stemming from new media reports suggesting that U.S. President Donald Trump is willing to conclude the conflict in Iran without reopening the strategic Strait of Hormuz. This move aims to prevent the conflict from extending beyond his initial 4-6 week timeline.

At 1:05 p.m., the OMXS30 index was up 0.97 percent at 2,918.25. Shares worth approximately 7.6 billion kronor had changed hands on the Stockholm bourse.

Among the major industrial sectors, basic materials led the advance with a 1.7 percent gain. At the other end of the spectrum, energy lagged with a 0.1 percent decline.

Among the blue-chip stocks in the OMXS30 index, Boliden rose 2.2 percent, while H&M B gained 2.2 percent. Addtech B saw the weakest performance, slipping 0.1 percent, while Alfa Laval edged up 0.1 percent.

Automaker Volvo Cars is converting part of its outstanding loan to Polestar into equity, based on a conversion price at a five percent discount to the volume-weighted average price over the last 30 days. An initial conversion of 274 million dollars increases its stake from 9.8 percent to 19.9 percent. Furthermore, the companies announced plans to consolidate production of the Polestar 3 at the Charleston plant in the U.S. Volvo Cars is up 0.7 percent.

Engineering group Atlas Copco's Swiss peer, VAT Group, reported very strong order intake for the first quarter of 2026, driven by sustained high demand in the semiconductor industry. However, quarterly revenue will fall short of the company's forecast due to delays caused by the conflict in the Middle East. VAT reaffirmed its full-year guidance. Atlas Copco's A-share is up 0.4 percent.

Apparel retailer H&M is gaining 2.2 percent. The principal owner, the founding Persson family, has purchased additional shares in the company for 1.4 billion kronor.

The board of wind power company Eolus is proposing that no dividend be paid for the 2025 fiscal year. This is due to the terms of the company's senior secured green bonds, which prohibit dividend payments following last year's negative net result. The stock is up 0.8 percent.

Consumer healthcare company Midsona is acquiring the Risenta brand for a preliminary 45 million kronor, funded through existing cash reserves. The acquisition is expected to contribute 130 million kronor in annual sales and improve the EBIT margin and earnings per share. Midsona is climbing 5.5 percent.

Construction firm NCC secured several orders totaling over 1.4 billion kronor. The stock is rising 2.3 percent.

A series of rating changes were issued during the day.

Invisio is climbing 6.4 percent after Pareto Securities upgraded its recommendation to buy from hold.

The same firm initiated coverage of Vitrolife with a buy rating, sending the stock up 2.5 percent.

BNP Paribas resumed coverage of Traton with an outperform rating. The stock is up 1.5 percent.