The companies have been asked to report their futures positions for Sasac to review, said the people, who asked not to be identified because the information is confidential.
China has stepped up its campaign to rein in commodity prices and reduce speculation in a bid to ease the threat to its pandemic rebound from soaring raw material costs.
State-owned enterprises were ordered to control risks and limit their exposure to overseas commodities markets by the State-owned Assets Supervision and Administration Commission (Sasac), according to people with knowledge of the matter.
