The Stockholm Stock Exchange opened lower on Thursday but reversed course to close in positive territory during a shortened trading session ahead of Walpurgis Night.

Market focus shifted toward several U.S. tech giants that have reported earnings. Developments in the Middle East and their impact on oil prices also remained in the spotlight, with Brent crude currently trading at just over 115 dollars per barrel.

At the 1:00 p.m. close, the OMXS30 index was up 0.66 percent at 3,060.48. Shares worth approximately 18.3 billion kronor were traded on the Stockholm Stock Exchange.

Among the major industrial sectors, telecommunications performed best with a 2.2 percent gain. At the other end of the spectrum, energy lagged behind, falling 0.7 percent.

Among the blue-chip stocks in the OMXS30 index, Telia rose 2.5 percent while Tele 2 B gained 2.2 percent. EQT saw the weakest performance, dropping 1.9 percent, while Assa Abloy B declined 0.6 percent.

Measurement technology firm Hexagon presented new financial targets for 2026-2030 at its capital markets day. The company is targeting average organic revenue growth of 4-6 percent and an EBITAC margin of 24-26 percent. The stock closed unchanged.

Specialist mortgage bank Enity doubled its operating profit in the first quarter compared to the same period last year, despite an increase in credit losses. The report met a harsh reception, sending the stock down 21 percent.

Gaming company Paradox reported an operating profit of 101 million kronor for the first quarter, missing analyst expectations of 109 million kronor. Revenue was in line with consensus. The stock retreated 1.5 percent.

Telecommunications installation firm Eltel saw an increase in both revenue and adjusted EBITDA. The stock climbed 7.0 percent.

Industrial group Idun Industrier reported higher figures across the board, with its stock rising 2.6 percent.

Tietoevry climbed 5.9 percent after SEB upgraded its rating to buy from hold. The same bank made a similar recommendation change for Hexatronic, which surged 19 percent.