HONG KONG -- A sharp slowdown in listing approvals outside the mainland by China's securities watchdog is adding an element of uncertainty to what has so far been a banner year for Hong Kong's bourse.
Hong Kong listing boom hinges on securities regulator keeping spigot open

The China Securities Regulatory Commission, headquartered in the building at left, controls the flow of mainland companies that can list on the Hong Kong Exchange, right. (Source photos by Reuters and Ken Kobayashi)
HONG KONG -- A sharp slowdown in listing approvals outside the mainland by China's securities watchdog is adding an element of uncertainty to what has so far been a banner year for Hong Kong's bourse.