Issuer Information feed Service (IIS) is a system for real-time feed service providing instantly trading news and announcements from listed companies and issuers listed on the HKEX securities market.

• Technical Documents

Current Production:

• Issuer Information feed Service (“IIS”) Transmission Specification (Version 3.20)
  
• Issuer Information feed Service (News Headline) (“IIS News Headline”) Transmission Specification (Version 2.17)

Upon launch of IIS Technical Upgrade with effect from Q1 2024:

• Issuer Information feed Service (“IIS”) Transmission Specification (Version 4.1)