Pareto Securities' Norwegian portfolio gave a negative return of 1.2 percent in November, while the benchmark index OSEBX rose 1.6 percent.

"The shipping sector continued to struggle, while Sats and Mowi were the best performers," Pareto writes in a commentary.

The biggest faller was tanker giant Frontline (-14.6 percent), after the VLCC market failed to live up to winter expectations and estimates came under renewed pressure after the Q3 report.

One of the winners was the aforementioned gym chain Sats with 14.4 percent, but for December Pareto chooses to remove it from the portfolio. Instead, it includes the discount chain Europris, where it sees potential for a short-term trigger in December.

In addition to Sats, Yara, DOF Group and Himalaya Shipping are also removed from the portfolio, and replaced with Norsk Hydro, Salmar and Odfjell Drilling.

The portfolio is up 20.4 percent so far this year, compared to OSEBX 11.3 percent.