China's Dalian Commodity Exchange (DCE) will increase transaction fees for iron ore trading in an attempt to reduce volatility.
The fee to trade the most active September contract will increase to 1pc of the transaction amount, from 0.6pc earlier. The fee for other contracts rises to 0.6pc of the transaction amount from 0.06pc currently. The changes will take effect on 30 May.
The increase in fees comes after the exchange last week asked market participants to behave rationally when trading iron ore and met coke futures.
The DCE's most-active iron contract has risen by 16pc since 6 May to close at 756.50 yuan/t ($109.50/t) today. China's markets were closed in the first week of May.
Physical and futures iron ore prices have increased on the back of tight supplies of Australian and Brazilian mainstream ores. But a seasonal slide in steel demand and prices, which may continue until August, is likely to pressure mills' profit margins and curb gains in iron ore prices.