The value of Norway's leading seafood companies fell sharply on Wednesday morning as news of a proposed new 40 percent government tax proposal was made public.

As of close of play Wednesday, the following changes were seen on the Oslo Stock Exchange:

  • Grieg Seafood's value fell 27 percent;
  • Austevoll Seafood's fell 22 percent;
  • Masoval fell 23 percent;
  • Mowi fell 19 percent; and
  • SalMar fell 30 percent.

The Norwegian government proposed the introduction of a new resource tax on salmon and trout farming of 40 percent for larger companies.