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SSE 50 Index

Index Calculation
• 1) Base day, Based Period and Base Index
The Base Day for SSE 50 Index is December 31, 2003. The Base Period is the total adjusted market capitalization for 50 constituents after closing on the Base Day. The Base Index is 1000 points. SSE 50 index is formally launched on January 2,2004.

• 2) Calculation Formula
SSE 50 Index is calculated using a Paasche weighted composite price index formula and weighted by adjusted number of shares.

The formula is


                                    Current adjusted market cap of constituents
Current index = ──────────────────────── × Base Value 
                                                                 Base Period


Adjusted market cap = Σ Price × Adjusted No. of shares.
SSE 50 Index uses category-weighted method (as indicated by the following chart) to adjust constituents' sharers.

Negotiable Market Share Ratio (%)	≤10	(10，20]	(20，30]	(30，40]	(40，50]	(50，60]	(60，70]	(70，80]	>80
Weight(%)	Negotiable Market Share Ratio	20	30	40	50	60	70	80	100

Index Maintenance
Same as SSE 180 Index.

 

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