Quantitative Research

A-H Premium Weekly (May 1st): Great Wall Motor, China Oilfield Services, China Life, CATL

01 May 2026 By Ke Yan, CFA
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Abstract: We analyzed A-H premium changes for 179 dual-listed China stocks as of May 1st, with the average A-H premium at 70.1%, up 1.5ppt week-on-week and flat over four weeks. The premium expanded across 115 stocks and contracted in 64. Sector gains were led by Real Estate (+10.2ppt) and Consumer Discretionary (+4.3ppt), while Communication Services (-2.4ppt) and Utilities (-2.1ppt) saw the largest declines. Among individual stocks, the largest premium increases came from Cig Shanghai (+25.7ppt), Gac (+21.6ppt), and Great Wall Motor (+18.1ppt, z-score 3.2), while the largest decreases were recorded in Jiangsu Lopal Tech. (-27.4ppt, z-score -2.3), China Suntien (-14.1ppt), and China Longyuan Power (-12.7ppt). China Life and China Oilfield Services both hit 52-week lows in A-H premium, falling 8.4ppt and 7.8ppt respectively, while CATL posted a statistically significant increase of 8.8ppt (z-score 3.0).

CHINA OILFIELD SERVICES (2883 HK) CATL (3750 HK) China Life (2628 HK) CHINA RAILWAY (390 HK) GREAT WALL MOTOR (2333 HK) CMB (3968 HK)

Highlighted Stocks

CHINA OILFIELD SERVICES, CATL, China Life, CHINA RAILWAY, GREAT WALL MOTOR, CMB

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