Research shows that Canada’s eight largest pension funds hold some $2.1 trillion in assets but only a quarter was invested in the country.

Aluminum retreated as much as 1.1% on Friday, while nickel pared an earlier advance of as much as 1.2%.

The miner reported record annual revenue of $1.69 billion.

Fund managers have been scaling up short positions on zinc, betting that this year's weakest base metals price performer has further downside.

The environmental secretary of Para state suspended environmental licenses for Onça Puma and Sossego mines.

The miner has announced a $1.6 billion impairment charge on its De Beers diamond business owing to faltering demand.

The sale is part of efforts to strengthen its balance sheet after Panama shuttered the Cobre Panama mine.