Pareto Securities' Norwegian portfolio gained 2.8 percent in May, outperforming the OSEBX benchmark index, which fell 0.9 percent.

Year-to-date, the portfolio has delivered a return of 21.5 percent, compared to an 18.5 percent increase for the benchmark index.

Heading into June, Archer, Lerøy Seafood Group, and Vow are removed from the portfolio.

New additions include Constellation Oil Services and Scatec.

The portfolio's remaining holdings remain unchanged, consisting of Aker BP, Bakkafrost, CMB Tech, DNB, Envipco, Europris, Kongsberg Group, and SoftwareOne.