Highly leveraged trading giant Glencore is doubling down on its asset sales program, as it tries to bolster investor confidence amid a worsening commodity price rout.

The miner on Tuesday said it was "confident of achieving $US4 to 5 billion of asset disposals during the remainder of 2016", after executing $US1.6 billion ($2.2 billion) in sales to date, including $US1.4 billion from precious metals' streaming deals.