The Stockholm Stock Exchange has commenced the trading week at lower levels, following declines in international markets. Sentiment is being weighed down by heightened concerns regarding the Iran conflict following new threats from Donald Trump suggesting that time is running out. Oil prices are rising by just over 1 percent today, while global yields climb on inflation fears.

In the news flow, it is noted that Sveafastigheter is merging with Klarabo to create the exchange's largest listed residential real estate company.

At around 09:20, the OMXS30 index was down 0.71 percent at 3,014.81. Shares worth approximately SEK 1.7 billion were traded on the Stockholm Stock Exchange.

The best performance among the exchange's major industrial sectors was energy, with an increase of 1.9 percent. At the other end of the scale, basic materials lagged at the bottom, down 1.3 percent.

Among the leading shares included in the OMXS30 index, Hexagon B rose 1.5 percent while Nibe B was up 0.8 percent. The weakest performance came from Boliden, down 1.8 percent, while Volvo B fell 1.6 percent.

Sveafastigheter and Klarabo are joining forces through a merger where Sveafastigheter will be the surviving entity. Simultaneously, Klarabo is acquiring a residential portfolio from SBB comprising approximately 4,100 apartments. The merged company is expected to become Nasdaq Stockholm's largest listed residential real estate company with around 26,500 apartments and a property value of approximately SEK 47 billion.

Klarabo shareholders are offered nine new shares in Sveafastigheter for every 22 shares in Klarabo. The merger consideration corresponds to a valuation of Klarabo of approximately SEK 2 billion and represents a premium of 0.6 percent against the last closing price. Klarabo is simultaneously proposing an extraordinary dividend of SEK 1.40 per share.

Klarabo's shares were down 1.5 percent, while Sveafastigheter rose 0.5 percent. SBB B was up 3.2 percent.

Maha Capital and Blue Water Acquisition Corp. IV have jointly decided to terminate the previously communicated process regarding a potential reverse SPAC transaction and are thus cancelling the non-binding letter of intent in its entirety. Maha's shares rose 1 percent.

The housing platform Hemnet fell 1.2 percent. The company reported net sales of SEK 116.6 million in April, a decrease of 21 percent compared to the same month last year. Meanwhile, the average revenue per listing (ARPL) increased by 11 percent.

Pharmaceutical companies AstraZeneca and Daiichi Sankyo have received FDA approval in the US for Enhertu for two new indications in HER2-positive early breast cancer. The approvals cover both neoadjuvant treatment before surgery and adjuvant treatment after surgery based on the Phase III trials DESTINY-Breast11 and DESTINY-Breast05 respectively. AstraZeneca's shares edged up 0.2 percent.

Investment company Bure reported a decrease in net asset value during the first quarter compared to the turn of the year. Following the reporting period, the net asset value has increased significantly, supported in part by the share price surge in the holding company Silex. The stock fell 0.6 percent.

Technology company Smart Eye swung to an EBITDA profit of SEK 26.9 million in the first quarter, from -17.9 million in the corresponding quarter last year. At the same time, revenue increased. The stock rose by over 10 percent.

On Sunday evening, a rockfall occurred in Boliden's mine in Kristineberg, Lycksele municipality. A man who was trapped in connection with the collapse has now been rescued, SVT reports.

In the analyst flow, it is noted that Dagens Industri has issued a buy recommendation for SKF, which faces a group demerger this autumn. The newspaper sees an upside of at least 30 percent. The stock fell 0.6 percent.

Dagens Industri has issued a sell recommendation for Alleima. The stock was down just under 5 percent.

Citigroup raises Saab to neutral (from sell), with a target price of SEK 527. The stock was down 0.2 percent.

Alandsbanken initiates a positive view on Beijer Ref. The stock fell 0.6 percent.