HONG KONG, June 15 (Reuters) - Hong Kong shares shed 2.1 percent in thin turnover on Monday, snapping a three-session winning streak, knocked down by lower energy prices and profit taking after the main index hit a nine-month high last week.
Ping An Insurance (Group) slid 3.2 percent after it said it would increase its stake in mid-sized lender Shenzhen Development Bank to almost 30 percent from under 5 percent.
Citigroup downgraded the stock to a "hold" rating from "buy" saying the deal did not add much value to the insurer's banking aspirations.
The benchmark Hang Seng Index finished down 390.72 points at 18,498.96.
The China Enterprises Index of top mainland companies was down 1.9 percent at 10,877.54. (Reporting by Parvathy Ullatil; Editing by Chris Lewis)