The Stockholm Stock Exchange is trading lower at Wednesday's midday session, tracking a broader decline across leading European markets.

The U.S. Trade Representative has proposed new tariffs of up to 12.5 percent on imports from 60 economies, including China, the EU, and Japan. Meanwhile, oil prices are climbing following overnight strikes involving both the U.S. and Iran.

As of 12:50 PM, the blue-chip OMXS30 index was down 0.62 percent at 3,130.43. Turnover on the Stockholm bourse amounted to approximately SEK 8.9 billion.

Energy was the top-performing industrial sector, gaining 1.5 percent. At the other end of the spectrum, healthcare lagged the market with a 1.5 percent decline.

Among the OMXS30 constituents, Alfa Laval rose 1.3 percent, while Tele 2 B gained 1.2 percent. The worst performers were EQT, which tumbled 5.5 percent, and AstraZeneca, down 3.2 percent.

Home improvement retailer Clas Ohlson reported fourth-quarter operating profit that missed analyst expectations. While sales figures were already known, the board proposed a total dividend of SEK 14 per share. The company also unveiled new financial targets for the three-year period starting May 1, aiming for annual organic sales growth of 5 percent and an operating margin of around 12 percent, up from the previous target of 7-9 percent. The stock is down 7.6 percent.

European private equity firms, including EQT, were weighed down by news that Swiss-based Partners Group has restricted withdrawals from its Global Value evergreen fund.

Real estate firm Atrium Ljungberg saw its shares fall 7.0 percent after Finnish pension insurer Varma divested its entire holding of 40.6 million shares. The block trade, valued at SEK 1.1 billion, was executed at SEK 27.35 per share, representing a 7 percent discount to the previous day's closing price.

Automaker Volvo Cars is down 3.4 percent. The company's global sales totaled 178,980 vehicles during the March-May period, a 5.5 percent decrease year-on-year, although performance improved compared to the preceding three-month period.

Investment firm Ratos has sold 9 million shares in the construction company Sentia to institutional investors at NOK 72.40 per share, totaling NOK 652 million. Following the sale, Ratos retains a 30.8 percent stake in Sentia. Ratos shares are down 0.6 percent.

Climate control specialist Munters has acquired UK-based Optifarm, a provider of AI-driven livestock monitoring solutions. The acquisition is intended to bolster the operational intelligence offering under the Speria brand within the Foodtech business area. The stock is up 3.3 percent.

Medical technology and cybersecurity firm Sectra has secured orders worth SEK 120 million from Swedish government authorities for secure communication solutions. The stock is trading 1.5 percent lower.