Hong Kong Exchange (HKEX) Implements Changes to Board Lot Units in 2 Phases (Effective 2/7/26) for Securities Trading: 1) Reduce Board Lot Units from 40+ to 8 Options (1, 50, 100, 500, 1000, 2000, 5000 & 10000 Shares) Which Will Require Around 25% Listed Issuers to Make Changes, 2) Decrease Board Lot Value Floor to HKD 1,000 from HKD 2,000 and 3) New Board Lot Value Ceiling of HKD 50,000 for Board Lot Units Larger than 100 Shares
1st July 2026 | Hong Kong
Hong Kong Exchange (HKEX) has announced to implement changes to board lot units (Effective 2/7/26) for securities trading in 2 phases – 1) Reduce board lot units from 40+ to 8 options (1, 50, 100, 500, 1000, 2000, 5000 & 10000 shares) which will require around 25% listed issuers to make changes, 2) Decrease board lot value floor to HKD 1,000 from HKD 2,000 and 3) New board lot value ceiling of HKD 50,000 for board lot units larger than 100 shares. Announcement (30/6/26): “Hong Kong Exchanges and Clearing Limited (HKEX) is pleased to publish today (Tuesday) the conclusions of its consultation on proposed enhancements to the board lot framework for the Hong Kong securities market. The consultation received 85 responses from a broad range of market participants across the primary and secondary markets. All proposed enhancements received strong market support, with respondents recognising the potential for enhanced operational efficiencies and improved accessibility to the Hong Kong securities market. Taking into account the feedback received, HKEX will proceed with the following enhancements to the board lot framework for Applicable Securities, which include equities1 and REITs: 1) Reduction of the board lot value floor guidance from HK$2,000 to HK$1,000; 2) Introduction of board lot value ceiling guidance at HK$50,000 for issuers that adopt board lot units larger than 100 shares; and 3) Standardisation of board lot units to a defined set of eight options: 1, 50, 100, 500, 1,000, 2,000, 5,000 and 10,000 share(s).” More info below:
“ Hong Kong Exchange (HKEX) Implements Changes to Board Lot Units (Effective 2/7/26) for Securities Trading: 1) Reduce Board Lot Units from 40+ to 8 Options (1, 50, 100, 500, 1000, 2000, 5000 & 10000 Shares) Which Will Require Around 25% Listed Issuers to Make Changes, 2) Decrease Board Lot Value Floor to HKD 1,000 from HKD 2,000 and 3) New Board Lot Value Ceiling of HKD 50,000 for Board Lot Units Larger than 100 Shares “
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HKEX Head of Markets, Gregory Yu: “We are delighted to introduce a more streamlined board lot framework, marking a significant step forward in making our market more accessible and inclusive. The feedback received highlights broad market support for simplifying market arrangements and enhancing trading efficiency. Moving to a more standardised set of board lot units lays a strong foundation for the continued evolution of Hong Kong’s market microstructure, paving the way towards the potential for a unified board lot unit in the longer term. Together with other market infrastructure initiatives and product innovations at HKEX, these enhancements reinforce Hong Kong’s role as a leading international financial centre.”
To facilitate a smooth transition and minimise operational impact on the market, HKEX will adopt a two‑phased implementation approach:
Phase 1 (effective 2 July 2026)
- Prospective issuers
- with IPO application filings made before 2 July 2026 will be required to comply with the updated board lot value floor guidance and the new board lot value ceiling guidance;
- with IPO application filings (including the refiling of IPO applications lapsed before 2 July 2026) made on or after 2 July 2026 will be required to comply with all components of the new board lot framework.
- Existing issuers
- Existing issuers will be required to comply with the updated board lot value floor guidanceand the new board lot value ceiling guidance3.
- Existing issuers undertaking corporate actions involving a change of board lot unit, share consolidation or share sub-division, will be required to comply with all components of the new board lot framework.
- Board lot value ceiling guidance
- The ceiling guidance applies only to Applicable Securities with a board lot unit exceeding 100 shares.
- HKEX will regularly review board lot values and notify issuers whose average daily closing board lot value during the six-month assessment period4 exceeds HK$50,000. Issuers will be asked to reduce the board lot value within six months of the end of the relevant assessment period.
Phase 2 (effective upon the launch of USM on 16 November 2026)
- All issuers will be required to adopt one of the standardised board lot units within six months of completing the Uncertificated Securities Market (USM) transition process.
- The requirement to conduct parallel trading for a change of board lot unit will be removed for issuers that have completed the USM transition process.
In conjunction with the enhanced board lot framework, HKEX also plans to enhance the odd lot trading mechanism, with the exploration of a new automatic matching mechanism considered to be launched earliest by the third quarter of 2027, subject to regulatory approval and market readiness. Further details of this enhancement will be announced in due course.
The consultation conclusions and copies of the respondents’ submissions are available on the HKEX website. The Guide on Trading Arrangements for Selected Types of Corporate Actions has also been updated to reflect the new board lot framework and associated changes.
Notes:
- The following instruments are excluded from the scope of the proposal: Exchange Traded Products, Structured Products, debt securities, equity warrants, investment companies (listed under Chapter 21 of the Listing Rules), Special Purpose Acquisition Company shares and warrants.
- Only applicable upon initial listing, when the board lot unit is being changed, and when conducting share consolidation or sub-division.
- Issuers that are not Specified Prescribed Securities under the USM regime, which in general are issuers incorporated outside Hong Kong, the Chinese Mainland, Bermuda, or Cayman Islands, would not be expected to observe the board lot value ceiling guidance until such time as they are able to elect to undertake an earlier USM transition.
- The first assessment period will commence in July 2026 and will run from January to June and from July to December each year.
Hong Kong Exchange (HKEX) Proposed Enhancements to Board Lot Units for Securities Trading: 1) Reduce Board Lot Units from 40+ to 8 Options (1, 50, 100, 500, 1000, 2000, 5000 & 10000 Shares) Which Will Require Around 25% Listed Issuers to Make Changes, 2) Decrease Board Lot Value Floor to HKD 1,000 from HKD 2,000 and 3) New Board Lot Value Ceiling of HKD 50,000 for Board Lot Units Larger than 100 Shares
19th December – Hong Kong Exchange (HKEX) has proposed enhancements to board lot units for securities trading: 1) Reduce board lot units from 40+ to 8 options (1, 50, 100, 500, 1000, 2000, 5000 & 10000 shares) which will require around 25% listed issuers to make changes, 2) Decrease board lot value floor to HKD 1,000 from HKD 2,000 and 3) New board lot value ceiling of HKD 50,000 for board lot units larger than 100 shares. Announcement (18/12/25): “Hong Kong Exchanges and Clearing Limited (HKEX) today (Thursday) published a consultation paper on proposed enhancements to the board lot framework in the Hong Kong securities market, supporting efficiencies across trading, clearing and settlement processes. The consultation is open for a 12-week period, concluding on Thursday, 12 March 2026. HKEX has conducted a holistic review of the existing board lot mechanism, and is now seeking market feedback on adopting a more streamlined and simplified framework for board lots. The number of different board lot units available for Applicable Securities including equities1 and REITs, will be reduced to eight standardised board lot unit options. In addition to this there will be a significant reduction in minimum board lot value guidance, as well as the addition of new maximum board lot value guidance. These proposed changes are aimed at enhancing operational efficiency of the secondary market, as well as supporting investor participation in Hong Kong’s markets by making board lot values more accessible for retail investors.” More info below:
HKEX Head of Markets, Gregory Yu: “We are delighted to present for consultation, enhancements to streamline the board lot framework, as part of our ongoing commitment to enhance market vibrancy and boost trading efficiencies. These proposals aim to make trading simpler and more accessible to all, while also catering to the needs and distinctive features of Hong Kong’s financial markets. Moving to eight standardised board lot units from over 40 currently will help streamline trading and operational processes whilst maintaining flexibility for issuers and will be the first step of a longer-term journey to transition to a single unified board lot unit. We look forward to receiving comments from our stakeholders as we work together to reinforce Hong Kong’s position as a leading international financial centre.
Key proposals include:
Standardisation of Board Lot Units
- Issuers can select board lot units from a set of eight standardised options: 1, 50, 100, 500, 1,000, 2,000, 5,000, and 10,000 shares.
- These board lot units have been selected to provide options for issuers across different price bands, limiting both the impact to issuers and the creation of odd lots.
- In order to comply with standardisation, approximately 25 per cent of listed issuers will need to adjust their board lot sizes.
Board Lot Value Floor and Ceiling Guidance
- Board lot value guidance seeks to ensure that board lot values are not so low that they result in negative value trades (where execution cost exceeds trade value) or so high that board lots become unaffordable.
- Board lot value floor guidance will be reduced by 50 per cent from the current level of $2,000 to $1,000 to account for lower costs to execute trades.
- A new board lot value ceiling of $50,000 will be introduced for issuers that adopt board lot units larger than 100 shares.
Implementation Arrangements
The new board lot framework will be rolled out in phases to ensure a smooth transition for the market. In the first phase, new issuers will be required to list with standardised board lot units and adhere to board lot value guidance, while existing issuers will be required to follow the updated guidance on board lot values. During phase two, each existing issuer will be required to adopt one of the standardised board lot units, within a specified period following their transition to uncertificated shareholding under the Uncertificated Securities Market (USM)2 initiative. Aligning the implementation schedule of the two initiatives avoids the need to reprint share certificates following board lot unit changes. The approach is designed to support a gradual transition, maximise operational efficiency and minimise market disruption, with further details on the transition to be communicated at a later stage. Meanwhile, HKEX is also considering enhancements to its odd lot trading mechanism to improve trading efficiency under the new board lot framework. More details will be announced in due course. The consultation period will close on Thursday, 12 March 2026. Interested parties are encouraged to respond to the Consultation Paper by filling out and submitting a questionnaire on the HKEX website.
Notes:
- The following instruments are excluded from the scope of the proposal: Exchange Traded Products, Structured Products, debt securities, equity warrants, investment companies (listed under Chapter 21 of the Listing Rules), Special Purpose Acquisition Company shares and warrants.
- The Uncertificated Securities Market is a new market infrastructure that replaces paper share certificates with electronic records, making it easier and faster for people to hold and transfer shares.
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