Hang Seng Tech Index to expand to 50 constituents under six-part revamp
In short
Hang Seng Indexes Company announced six revisions to the Hang Seng Tech Index's compilation method, including raising the number of constituents from 30 to 50. The requirement that candidates belong to designated industries is dropped, six revised tech themes are introduced and sub-themes rise from 16 to 24. The changes will be implemented in the index review as of 30 September 2026 and take effect with the December 2026 index adjustment.
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Hang Seng Indexes Company announced on 7 October the results of its consultation on the Hang Seng Tech Index and set out six revisions to how the index is compiled (1, 3, 4). Business outlets CLS and Yicai led with the headline change: the number of constituents will rise from 30 to 50 (1, 2, 3, 4). [ 1 , 2 , 3 , 4 ]
Under the plan detailed by 36Kr, the requirement that eligible candidate companies belong to five designated industries under the Hang Seng industry classification system is removed. Existing themes are consolidated and expanded, with a new frontier technology theme added. The six revised technology themes are digital platforms and solutions, artificial intelligence, advanced hardware, robotics and automation, cloud, and frontier technology, and technology sub-themes increase from 16 to 24 (3, 4). [ 3 , 4 ]
The selection universe changes from main board-listed companies to constituents of the Hang Seng Composite LargeCap & MidCap Index, and a dual-group selection mechanism is introduced using market capitalisation ranking and revenue growth ranking (3, 4). Of the 50 constituents, the first 40 are chosen by market capitalisation and the remaining 10 by revenue growth over the past twelve months, according to 36Kr. The same report says non-constituents must additionally meet a minimum average daily turnover of HK$100 million over the past three months, while constituents selected on revenue growth must have recorded at least HK$500 million in annual revenue in each of the last two consecutive fiscal years (3). [ 3 , 4 ]
On timing, Jiemian reported that the revisions will be implemented in the index review for the period ended 30 September 2026 and take effect in the December 2026 index adjustment. CLS and 36Kr reported that the changes would be implemented in December (1, 3, 4). [ 1 , 3 , 4 ]
Why it matters
The Hang Seng Tech Index is a widely followed gauge of Hong Kong-listed technology companies, so changing how its constituents are selected affects which firms are represented in it. The revisions broaden the stated theme coverage to areas such as artificial intelligence, robotics and frontier technology, and add a revenue-growth route into the index alongside market capitalisation. The documents give no figures on fund flows or investor impact.
Key facts
- Hang Seng Indexes Company announced the consultation results for the Hang Seng Tech Index and six revisions to the index, to be implemented in December. [ 1 , 3 , 4 ]
- The number of constituents will increase from 30 to 50. [ 1 , 2 , 3 , 4 ]
- The requirement that eligible candidate companies must belong to five designated industries under the Hang Seng industry classification system is removed. [ 3 , 4 ]
- Themes are consolidated and expanded into six: digital platforms and solutions, artificial intelligence, advanced hardware, robotics and automation, cloud, and frontier technology; tech sub-themes rise from 16 to 24. [ 3 , 4 ]
- The selection universe changes from main board-listed companies to constituents of the Hang Seng Composite LargeCap & MidCap Index, with a dual-group selection mechanism based on market capitalisation and revenue growth. [ 3 , 4 ]
- Of the 50 constituents, the first 40 are selected by market capitalisation and the remaining 10 by revenue growth over the past twelve months. [ 3 ]
- Non-constituents must also meet a minimum average daily turnover of HK$100 million over the past three months, and constituents selected by revenue growth must have recorded at least HK$500 million in annual revenue in each of the last two consecutive fiscal years. [ 3 ]
- The revisions will be implemented in the index review for the period ended 30 September 2026 and take effect in the December 2026 index adjustment. [ 4 ]
Confirmed by several sources
- Hang Seng Indexes Company announced the consultation results and six reforms to the Hang Seng Tech Index. [ 1 , 3 , 4 ]
- The Hang Seng Tech Index will expand its constituents from 30 to 50. [ 1 , 2 , 3 , 4 ]
- The revisions are to be implemented in December. [ 1 , 3 , 4 ]
- The index's theme coverage is revised, with the six revised technology themes listed as digital platforms and solutions, artificial intelligence, advanced hardware, robotics and automation, cloud and frontier technology, and with tech sub-themes increased from 16 to 24. [ 3 , 4 ]
Still unclear
- Which companies will be added to or removed from the index. None of the documents names any company as an expected entrant or exit; the revisions are described only as methodology changes.
- The eligibility thresholds of at least HK$100 million average daily turnover over three months and at least HK$500 million annual revenue in each of the last two consecutive fiscal years. These figures appear only in 36Kr's summary, with no second outlet or official text in the documents confirming them.
What local media are saying
Timeline, local time
- CLS reports that Hang Seng Indexes Company announced the consultation results, six reforms and a December implementation, with constituents to be expanded to 50. [ 1 ]
- Yicai reports the expansion of the Hang Seng Tech Index to 50 constituents. [ 2 ]
- 36Kr publishes the six revisions in detail, including themes, sub-theme count, selection universe and eligibility thresholds. [ 3 ]
- Jiemian reports the revision plan, including the dual-group selection mechanism and the implementation timetable. [ 4 ]
- The revisions take effect in the December 2026 index adjustment, having been implemented in the index review as of 30 September 2026. [ 1 , 3 , 4 ]