HONG KONG, Sept 16 (Reuters) - Hong Kong stocks opened slightly lower, pulling back from a one-month high, weighed down by a weaker mainland market.
The benchmark Hang Seng Index <.HSI> fell 0.2 percent at the open to 21,689.4. The China Enterprise Index <.HSCE> of top locally listed mainland firms opened 0.5 percent lower. (Reporting by Vikram S Subhedar)