The ethical regulatory body of Norway's sovereign wealth fund will investigate whether the fund's holdings in footwear manufacturers, cryptocurrency companies, and gambling operators involve potential ethical violations next year, which could lead this influential investor to sell its stocks. The world's largest sovereign wealth fund holds 1.5% of the listed shares of 8,700 companies worldwide, with assets of 1.8 trillion US dollars, and operates in accordance with ethical guidelines set by the Norwegian Parliament. The fund's Council on Ethics will conduct investigations on invested companies to ensure compliance with ethical standards. Failure to comply may result in the ethical regulatory body recommending divestment or placing them on a public watchlist.