Marked volatility in index futures

Activity hints of spike in speculative trading in June; officials say foreign firms not short selling

Stock index futures saw higher trading volumes during the second half of last month along with a marked increase in speculative trading, the China Financial Futures Exchange said on Friday.

The futures bourse, where three stock-index futures contracts are listed, plans to adopt a system of differentiated charges based on trading volumes to make index futures speculation more costly and said the system would be implemented before Aug 1.