Hang Seng Indexes Co added Pop Mart International Group Ltd, JD Logistics Inc and China Telecom Corp to its stock benchmark in the Hong Kong Special Administrative Region following its quarterly review of members.

The rebalancing brings the total number of members of the Hang Seng Index to 88 from 85, according to the index compiler’s statement Friday. The changes will take effect on Sept 8.

Meanwhile, Pop Mart will also be included in the Hang Seng China Enterprises Index, while J&T Global Express Ltd will be removed from the gauge of mainland firms listed in the HKSAR. The total number of HSCEI’s constituents remains unchanged at 50, the company said.

The review is closely watched as a signal for which listed companies have excelled across key metrics, such as market capitalization and turnover. Inclusion can attract investments from index-tracking funds at a time when mainland investors’ appetite has made the HSI one of the world’s top-performing major stock gauges.

Several analysts had predicted Pop Mart’s inclusion to the HSI, with the Labubu doll maker’s shares surging about 250 percent this year.

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Pop Mart ranks “very highly in terms of market cap and/or turnover”, Janaghan Jeyakumar, an analyst at Quiddity Research, said.