Flash: Hang Seng Index opens 4% down on ThursdayShareAdd BT as a preferred sourceAdd BT as a preferred sourcePublished Thu, Feb 11, 2016 · 01:36 AM FULL STORY: Hong Kong: Hang Seng tumbles on reopening after CNY holidaysHang Seng IndexHong KongCopyright SPH Media. All rights reserved.Reuse this contentFeedback