Is HKEX open on Friday 21 October 2016?
No
No. HKEX is closed on Friday 21 October 2016 for Trading Suspended for the Whole Day due to Severe Weather. It reopens on Monday 24 October 2016.
Trading Suspended for the Whole Day due to Severe Weather
See also HKEX hours today and HKEX holidays 2016
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