As of last Friday (12th), the HSI had increased by 29% YTD, putting it on course for its strongest annual performance in the past decade since the 36% growth in 2017.

Following an 18% increase in 2024, the HSI has extended its upward momentum into 2025, according to the Hang Seng Indexes Company. The YTD rally was fueled by several key drivers, such as record inflows via Southbound Stock Connect, optimism surrounding the future development of AI, and rate cuts.

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At the constituent level, BABA-W (09988.HK)  +0.900 (+0.625%)    Short selling $2.01B; Ratio 19.614%   was the leading contributor, adding about 1,332 index points or 23%, to the HSI's YTD performance. HSBC HOLDINGS (00005.HK)  +0.600 (+0.505%)    Short selling $252.06M; Ratio 15.721%   and TENCENT (00700.HK)  +9.000 (+1.488%)    Short selling $1.70B; Ratio 15.610%   were the next major drivers, contributing 14% and 13% of the rally respectively.

Including AIA (01299.HK)  +1.150 (+1.414%)    Short selling $585.97M; Ratio 26.586%   , SMIC (00981.HK)  +0.350 (+0.541%)    Short selling $128.95M; Ratio 5.034%   , XIAOMI-W (01810.HK)  +0.340 (+0.846%)    Short selling $1.18B; Ratio 26.971%   , CCB (00939.HK)  -0.030 (-0.399%)    Short selling $429.61M; Ratio 9.183%   , HKEX (00388.HK)  +5.200 (+1.294%)    Short selling $225.94M; Ratio 16.959%   , PING AN (02318.HK)  +0.250 (+0.383%)    Short selling $351.40M; Ratio 20.189%   and ZIJIN MINING (02899.HK)  +0.400 (+1.205%)    Short selling $172.67M; Ratio 10.836%   , the combined impact of the top 10 contributors amounted to 4,569 index points, representing 77% of the total YTD increase as of 12 December.
(HK stocks quote is delayed for at least 15 mins.Short Selling Data as at 2025-12-19 16:25.)