HKEX

aid: hkex
url: https://raw.githubusercontent.com/api-evangelist/hkex/refs/heads/main/apis.yml
name: HKEX
kind: company
description: HKEX (Hong Kong Exchanges and Clearing Limited, SEHK 388) operates the Stock Exchange of Hong Kong, the Hong
  Kong Futures Exchange, and their clearing houses, and also owns the London Metal Exchange. As an exchange data arm it sells
  real-time securities and derivatives market data through the sales-gated HKEX Orion Market Data (OMD) platform - binary
  multicast datafeeds licensed to vendors and subscribers rather than a self-serve HTTP API - plus historical tick, full order
  book, and CCASS shareholding reference data through the HKEX Data Marketplace, delivered via SFTP, cloud-to-cloud transfer,
  and direct download. Its one publicly documented RESTful JSON API is the FINI API Gateway for IPO settlement workflows,
  restricted to registered market participants using OAuth 2.0 JWT credentials.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/hkex.png
tags:
- Financial
- Market Data
- Stocks
- Derivatives
- Exchange
- Real-Time
- Historical Data
- Order Book
- Reference Data
- IPO
created: '2026-07-21'
modified: '2026-07-22'
specificationVersion: '0.19'
apis:
- aid: hkex:hkex-orion-market-data-securities-omd-c
  name: HKEX Orion Market Data Platform - Securities Market (OMD-C)
  tags:
  - Market Data
  - Real-Time
  - Securities
  - Multicast
  - Order Book
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.hkex.com.hk/Services/Market-Data-Services/Infrastructure/HKEX-Orion-Market-Data-Platform-Securities-Market-OMD-C?sc_lang=en
  properties:
  - url: https://www.hkex.com.hk/Services/Market-Data-Services/Infrastructure/HKEX-Orion-Market-Data-Platform-Securities-Market-OMD-C?sc_lang=en
    type: Documentation
  - url: https://www.hkex.com.hk/eng/prod/dataprod/Documents/HKEX_OMD-C_Binary_Interface_Specifications_v1.39b.pdf
    type: APIReference
  description: Real-time datafeeds (OMD-C SS, SP, SF tiers) for all securities traded on the Stock Exchange of Hong Kong,
    published in a proprietary binary message format over one-to-many IP multicast/UDP for high throughput and low latency.
    Not an HTTP API - access is licensed through HKEX data licensing agreements, and the binary interface specifications and
    connectivity guides are public PDFs.
- aid: hkex:hkex-orion-market-data-derivatives-omd-d
  name: HKEX Orion Market Data Platform - Derivatives Market (OMD-D)
  tags:
  - Market Data
  - Real-Time
  - Derivatives
  - Futures
  - Options
  - Multicast
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.hkex.com.hk/Services/Market-Data-Services/Infrastructure/HKEX-Orion-Market-Data-Platform-Derivatives-Market-OMD-D?sc_lang=en
  properties:
  - url: https://www.hkex.com.hk/Services/Market-Data-Services/Infrastructure/HKEX-Orion-Market-Data-Platform-Derivatives-Market-OMD-D?sc_lang=en
    type: Documentation
  - url: https://www.hkex.com.hk/-/media/HKEX-Market/Services/Market-Data-Services/Infrastructure/HKEX-Orion-Market-Data-Platform-Derivatives-Market-OMD-D/HKEX-OMDD-Developers-Guide-v1,-d-,26.pdf
    type: APIReference
  description: Real-time datafeeds (OMD-D DS, DP, DF tiers) for futures and options traded on the Hong Kong Futures Exchange,
    delivered in binary format over IP multicast/UDP with separate channel sets for stock options and non-stock options markets.
    Licensed, sales-gated access; the binary interface specification and developers guide are public PDFs.
- aid: hkex:hkex-data-marketplace-historical-data
  name: HKEX Data Marketplace Historical Data
  tags:
  - Historical Data
  - Tick Data
  - Full Order Book
  - Shareholding
  - Reference Data
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://data.hkex.com.hk/catalog
  baseURL: https://data.hkex.com.hk
  properties:
  - url: https://data.hkex.com.hk/catalog
    type: Portal
  - url: https://www.hkex.com.hk/Services/Market-Data-Services/Historical-Data-Services/HKEX-Data-Marketplace?sc_lang=en
    type: Documentation
  description: Web-based storefront for HKEX historical and reference data straight from the exchange - historical full order
    book tick data for securities and derivatives (CSV), CCASS shareholding data, and securities attribute daily files. Delivered
    via SFTP, cloud-to-cloud transfer, or direct download; onboarding is handled through the datamarketplace@hkex.com.hk team
    rather than self-serve API keys, and no REST API is documented.
- aid: hkex:hkex-fini-api
  name: HKEX FINI API
  tags:
  - IPO
  - Settlement
  - Reference Data
  - REST
  - Post-Trade
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.hkex.com.hk/Services/Platform-Services/FINI?sc_lang=en
  properties:
  - url: https://www.hkex.com.hk/Services/Platform-Services/FINI?sc_lang=en
    type: Documentation
  - url: https://www.hkex.com.hk/-/media/HKEX-Market/Services/Next-Generation-Post-Trade-Programme/Fini/FINI-API-User-Guide-v0,-d-,41.pdf
    type: APIReference
  description: The FINI (Fast Interface for New Issuance) API Gateway offers RESTful JSON endpoints (e.g. GET /api/ipos/list/v1,
    GET /api/ipos/refdata/v1) for market participants to automate IPO workflows - IPO reference data, EIPO subscriptions,
    and EIPO funding. Authentication uses OAuth 2.0 JWT-bearer grants against the HKEX Access Management server (https://openam.connect.hkex.com.hk)
    with registered RSA JSON Web Keys, TLS 1.2, and end-to-end payload encryption. Access is restricted to registered HKSCC
    participants, FINI banks, sponsors, and advisers - not open self-serve signup - but the API guide is a public PDF.
common:
- type: Authentication
  url: authentication/hkex-authentication.yml
- type: OAuthScopes
  url: scopes/hkex-scopes.yml
- type: Conventions
  url: conventions/hkex-conventions.yml
- type: ErrorCatalog
  url: errors/hkex-problem-types.yml
- type: RateLimits
  url: rate-limits/hkex-rate-limits.yml
- type: ChangeLog
  url: changelog/hkex-changelog.yml
- type: Lifecycle
  url: lifecycle/hkex-lifecycle.yml
- type: Conformance
  url: conformance/hkex-conformance.yml
- type: LLMsTxt
  url: llms/hkex-llms.txt
- type: WellKnown
  url: well-known/hkex-well-known.yml
- type: DomainSecurity
  url: security/hkex-domain-security.yml
- type: Website
  url: https://www.hkex.com.hk/
- type: Portal
  url: https://data.hkex.com.hk/catalog
- type: Documentation
  url: https://www.hkex.com.hk/Services/Market-Data-Services?sc_lang=en
- type: LinkedIn
  url: https://www.linkedin.com/company/hkex
- type: Blog
  url: https://www.hkexgroup.com/Media-Centre/Insight?sc_lang=en
- type: Pricing
  url: https://www.hkex.com.hk/Services/Rules-and-Forms-and-Fees/Fees/Overview?sc_lang=en
- type: TermsOfService
  url: https://www.hkex.com.hk/Global/Exchange/Terms-of-Use?sc_lang=en
- type: PrivacyPolicy
  url: https://www.hkex.com.hk/Global/Exchange/HKEX-Privacy-Notices?sc_lang=en
- type: Support
  url: https://www.hkex.com.hk/Global/Exchange/Contact?sc_lang=en
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com