The suspicion of an infectious salmon anemia (ISA) virus outbreak at one of Oslo-listed Bakkafrost's sites on the Faroe Islands, forced the company's stock to tumble nearly 6 percent the same day.

For the week so far, the stock price is down 6.15 percent to NOK 87.50 on the close of the Oslo Bors on Tuesday evening.

"Of course it's worrying that authorities discovered ISA for the first time in 10 years on the Faroes Island," Kolbjorn Giskeodegard, analyst at Nordea, told IntraFish.

"The