SSE 50 and SSE 180 Indexes

SSE 50 and SSE 180 Index were the stock indices of Shanghai Stock Exchange, representing the top 50 and 180 companies by "float-adjusted" capitalization. Thus, SSE 180 is a sub-index of SSE Composite Index, as well as in order to qualify as a constituent of SSE 50 Index, it must be a constituent of SSE 180 Index, thus SSE 50 is a subindex of SSE 180 Index.