China's Tech Stock Index Faces Growing Concentration Risk
China's Tech-Heavy ChiNext Index Reaches 11-Year High, Raises Concerns
The ChiNext Index, a benchmark of China's tech-heavy stocks, has reached an 11-year high, fueled by strong earnings from a small group of heavyweight stocks. According to data compiled by Bloomberg, Contemporary Amperex Technology Co. (CATL) and Zhongji Innolight Co., along with five other stocks, make up nearly half of the ChiNext's weighting. CATL, which accounts for roughly a fifth of the gauge, reported stronger-than-expected results this month, while Zhongji Innolight announced a 262% earnings jump.
In comparison to the benchmark CSI 300 Index, the weighting of the top seven stocks in the ChiNext Index is significantly higher, with the top seven stocks accounting for just 20% of the CSI 300 Index's weighting.
| Index | Top 7 Stocks Weighting |
|---|---|
| ChiNext Index | 45% |
| CSI 300 Index | 20% |
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The increasing concentration of a few market leaders in the ChiNext Index is raising concerns among strategists. With influence concentrated in a few names, even a modest shift in sentiment may amplify market swings, leaving the index more exposed to sharper and potentially faster declines.
Investors should watch for signs of crowding, particularly a rapid rotation of capital from other sectors into ChiNext stocks, as an early signal that risks are building, said Wang Chen, a partner at XuFunds Investment Management Co.
Strains are also emerging in trading patterns. Over the past week, the most-traded 5% of ChiNext stocks captured 46% of total turnover, surpassing what Huaxi Securities has described as a "high-risk alert level" of 45%. This does not point to an immediate correction, but adjustment pressures are starting to surface, according to Huaxi analysts, including Liu Yu.
The ChiNext Index extended gains on Friday after ending 3.2% higher on Thursday, its highest closing level since 2015. Investor sentiment has improved since authorities unveiled earlier this month policy steps aimed at making the market more attractive to fast-growing companies.
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Investor Takeaway
Investors should be cautious of the growing concentration risk in China's tech stock index.
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