The Oslo Børs opened with a marginal gain of 0.05% shortly after the 9:00 a.m. start, driven by strong performance in Aker shares following a reported billion-dollar sale.
The modest lift in the main index came despite headwinds from the energy sector, where oil prices have softened by more than a dollar since Friday's close.
Brent spot prices are trading lower, reflecting broader commodity weakness that has persisted into the new week.
The divergence between the index and oil prices highlights the market's focus on corporate developments over macro-commodity trends at the open.
While the energy sector faces pressure from falling crude values, the rally in Aker provides a counterbalance, suggesting investors are rotating into names with specific catalysts rather than broad sector bets.
This dynamic mirrors activity on the Stockholm exchange, which also opened slightly higher amid a backdrop of M&A activity, including Ambea's bid for Humana.