The Hang Seng Index (HSI) tracks the largest and most liquid stocks listed on the Hong Kong Stock Exchange. It is the most widely followed stock market performance indicator in Hong Kong and is closely watched as a proxy for Chinese and Asian market sentiment.
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~80 constituent stocks (expanded from 50 in 2021): AIA, HSBC, Tencent, Alibaba, Meituan, Xiaomi, China Construction Bank, and BYD.
Regular session: 09:30–12:00 and 13:00–16:00 HKT (Mon–Fri). Hang Seng futures trade on HKEX.
Launched on 24 November 1969 by Hang Seng Bank. Free-float market-cap weighted. Expanded constituent count in 2021 to improve representation.