The Stockholm Stock Exchange opened Tuesday in the red. The news flow has been intense throughout the morning with reports from several companies.

At 09:23, the OMXS30 index was down 0.38 percent at 3,068.21. Shares worth approximately SEK 1.9 billion were traded on the Stockholm Stock Exchange.

Among the exchange's major industrial sectors, energy saw the best performance with an increase of 2.11 percent. At the other end of the scale, technology was at the bottom, down 1.20 percent.

Among the leading shares included in the OMXS30 index, Handelsbanken A rose 0.8 percent while Boliden was up 0.7 percent. The weakest performers were Assa Abloy B, down 2.2 percent, and Ericsson B, which fell 1.6 percent.

Mining company Boliden reported an operating profit for the first quarter of 2026 that beat analysts' expectations. Revenue, however, came in lower than expected. Boliden provided updated guidance for 2026 for the troubled Garpenberg mine. The stock rose 0.6 percent.

Lock manufacturer Assa Abloy reported revenue and adjusted operating profit in line with expectations for the first quarter. Assa fell 2.1 percent.

Packaging company Billerud's adjusted EBITDA for the first quarter was significantly weaker than analysts' expectations. Revenue came in higher than consensus. The company expects to restore a strong underlying profitability level in the second quarter. Billerud plummeted 12.3 percent.

Engineering consultancy Sweco's EBITA came in lower than analysts' expectations, while revenue was in line with consensus. Sweco fell 7.7 percent.

Steel company SSAB beat expectations for both revenue and operating profit in the first quarter. SSAB retreated 0.2 percent.

AAK, which produces plant-based specialty ingredients, increased its operating profit in line with expectations in Q1. AAK climbed 6.9 percent.

Forestry company Holmen's revenue and operating profit, however, came in lower than expected. Holmen fell 1.4 percent.

Climate control company Munters reported revenue and adjusted earnings in line with expectations for the first quarter. Order intake, however, was a positive surprise. Munters fell 2.7 percent.

Security company Securitas reported an interim report in line with expectations. Securitas fell 5.7 percent.

Pharmaceutical company Orexo reported lower revenue and an increased loss in the first quarter of 2026 compared to the same quarter last year. The company holds a large cash position following the sale of Zubsolv US. Orexo fell 7.1 percent.

Outdoor apparel company Revolution Race significantly increased its operating profit in the third quarter of its broken fiscal year. Revenue also rose. The company noted continued sales growth during the first weeks of April. The stock plummeted 12.7 percent.

Audiobook specialist Storytel reported revenue that was lower than expected during the first quarter. EBITDA was in line with expectations. The stock retreated 4.7 percent.

Measurement technology company Hexagon has decided on the timetable for the spin-off of its subsidiary Octave, which will be distributed to shareholders. Hexagon will trade ex-rights to Octave on May 21, with Octave expected to begin trading on May 25. The stock fell 1.6 percent.

S&P Global Ratings revised the outlook for real estate company Castellum to negative from stable and affirmed the BBB credit rating. The outlook reflects a risk of a downgrade within 12-24 months if leverage remains high and operational performance weakens. Castellum fell 0.9 percent.

E-commerce company Nelly plummeted 36.2 percent following its report. Operating profit fell by nearly 60 percent to SEK 8 million.