Cemex said on Friday it will carry out a planned share split to boost liquidity on July 1. Cemex shareholders approved the two-for-one share split at a meeting in April. Under the move, stockholders will receive two new Certificate of Ordinary Participation, or CPO -- divided into two series "A", and one series "B" -- for each CPO now held. The split is expected to drive down the price of company shares traded on the Mexican stock market.