China Merchants Shekou Industrial Zone's (SHE:001979) net profit attributable to shareholders in the first half dropped 64% to 528.1 million yuan from 1.45 billion yuan a year earlier, according to a Shenzhen bourse filing on Saturday.
The property developer's shares slumped 9% at the close of Monday's trade.
Earnings per share fell 57% year on year to 0.06 yuan from 0.14 yuan.
Operating revenue rose 6.4% to 54.8 billion yuan from 51.5 billion yuan in the prior year.