HKEX Launches Blockchain-Based Settlement Platform
Hong Kong Exchanges and Clearing Limited (HKEX) has unveiled a blockchain-based settlement platform in a move that could potentially transform the landscape of international stock trading, bolstering transparency, efficiency, and operational security.

HKEX Synapse
According to an announcement on Wednesday (local time), the new platform is called Synapse, and it is set to launch on October 9. The platform utilizes smart contracts developed in the DAML programming language, offering a range of benefits for market participants.
Synapse’s primary objective is to streamline post-trade workflows, minimize settlement risks, and enhance transparency in the financial markets. It will be deployed on HKEX’s Stock Connect, a program that allows international investors access to over 1,000 mainland Chinese stocks through Hong Kong routing.
With an average daily turnover of RMB 109.3 billion ($15.18 billion) in the first half of 2023, up 5% from the previous year, with a 50% increase from 2020 levels, Stock Connect has established itself as an important channel for international investment.
DAML-based smart contracts
One of Synapse’s standout features is its use of DAML, an open-source smart contract language. DAML has the capability to synchronize data across both blockchains and centralized databases, which can significantly improve operational efficiency. By incorporating smart contracts into the settlement process, Synapse enables automatic generation of settlement instructions, reducing the time and manual effort required for trade confirmation. This not only reduces the likelihood of errors but also accelerates settlement, enhancing liquidity and boosting investor confidence.
Additionally, Synapse facilitates concurrent processing by simultaneously generating settlement instructions for all parties involved in the trade. This near-instantaneous status update mechanism is especially crucial when connecting traders across different markets. HKEX’s connection to Hong Kong’s Depository Trust and Clearing Corporation via its Institutional Trade Processing service further centralizes cross-border transaction matching, creating a robust ecosystem for seamless trading.
Synapse’s launch reflects HKEX’s interest in nurturing international participation where Mainland China’s equity markets are concerned. Glenda So, HKEX Group Head of Emerging Business and FIC, expressed her enthusiasm for the platform’s potential to strengthen both market and investor growth strategies. She believes that Synapse will not only enhance post-trade efficiencies but also contribute to building a more resilient financial ecosystem.
Established interest in crypto/blockchain
This is not HKEX’s first expression of interest in blockchain-based technology. In a report it published earlier this year, the Hong Kong stock exchange concluded that crypto exchange-traded funds (ETFs) have the potential to play an important part in building the next phase of digital asset expansion in Asia. Trading in the first crypto ETFs commenced on the platform in December of last year.
It’s worth noting that Hong Kong has been rapidly evolving into a hub for Web3 firms, further emphasizing the importance of platforms like Synapse to enhance the efficiency and security of financial transactions in this dynamic environment. While developments in the crypto space are ongoing, Synapse’s blockchain-based settlement platform represents yet another milestone in the evolution of crypto and blockchain-centric financial infrastructure in the region.


