The Stockholm Stock Exchange advanced on Monday, marking the year's second trading session, which was shortened ahead of the Epiphany holiday. In the news flow, defense company Saab climbed while mining stocks also performed strongly.

At the close at 1:00 p.m., the OMXS30 index was up 0.71 percent at 2,901.78. Shares worth approximately 13.6 billion kronor were traded on the Stockholm Stock Exchange.

The OMXS30 index crossed above the 2,900 mark for the first time during the day. It thus took 70 days for the index to rise 100 points from 2,800 to 2,900.

Among the major industrial sectors on the exchange, energy posted the best performance with a gain of 1.8 percent. At the other end of the spectrum, consumer discretionary was the worst performer, down 1.2 percent.

Among the leading stocks included in the OMXS30 index, Saab B rose 6.6 percent while Boliden was up 3.2 percent. SKF B had the weakest development, down 1.5 percent, while H&M B declined by 1.3 percent.

The United States carried out an attack on Venezuela over the weekend, capturing President Nicolas Maduro and his wife. The couple has been flown to the United States to face trial on charges including "narco-terrorism."

European defense stocks rose on heightened geopolitical risks following the U.S. attack in Venezuela, with Saab shares hitting a new all-time high at 599.40 kronor.

In the mining sector, in addition to Boliden, the Lundin companies also performed strongly. Lundin Mining increased by 4.3 percent and Lundin Gold rose by 4.2 percent.

Residential developer Bonava's investment deals amounted to 2 billion kronor last year, representing an 11 percent increase compared to 2024. The stock fell 1.1 percent.

Pharmaceutical company Bioinvent reported promising preliminary results from its ongoing phase 2a signal-finding study evaluating the drug candidate BI-1808 in combination with Keytruda in patients with ovarian cancer. The stock rose 2.0 percent.

Redeye initiated coverage of Hacksaw with a motivated value of 130 kronor per share, more than double the current price. The stock gained 0.9 percent.

DNB Carnegie downgraded its recommendation on Munters to hold from buy. The stock fell by 6.9 percent.