The OMXS index had risen 0.4 percent by the early close at 1 p.m. The early closing comes ahead of the Boxing Day holiday on Tuesday, when the stock exchange is closed.
The rise means that the decline from last Friday has been recovered and that the OMXS index has been around zero since the turn of the year.
Among the heavyweights in the OMXS30 index, Saab is surging 6.6 percent. Other winners include mining group Boliden, up 3.2 percent, and engineering stocks such as Atlas Copco and ABB, up 2.8 percent each.
The rise was slowed by declines for, among others, ball-bearing manufacturer SKF and clothing chain H&M of 1.5 and 1.3 percent respectively.
The price of oil moved little after a reported US attack this weekend on Venezuela, where President Nicolás Maduro was reportedly captured to face trial in the US. But prices of precious metals such as gold and silver are rising.
Futures trading was pointing up ahead of Monday's opening on Wall Street.
Last Friday – the first trading day of the year – the OMXS index fell by 0.4 percent. The full year 2025 was then recorded as an increase of almost 10 percent.
