CSI 300 constituents are ranked by index weight in the Apr. 30, 2026 China Securities Index factsheet. The rows use the top 10 constituent weights, with the full CSI 300 as the 100% index frame. Contemporary Amperex Technology is first at 4.39%, followed by Zhongji Innolight at 3.63% and Kweichow Moutai at 3.30%. The top 10 constituents account for 23.8% of the index, and the first-ranked weight is 3.38x the tenth-ranked weight.
| Rank | Entry | Value | Period |
|---|---|---|---|
| 1 | Contemporary Amperex Technology | 4.39% | Apr. 30, 2026 snapshot |
| 2 | Zhongji Innolight | 3.63% | Apr. 30, 2026 snapshot |
| 3 | Kweichow Moutai | 3.30% | Apr. 30, 2026 snapshot |
| 4 | Ping An Insurance | 2.41% | Apr. 30, 2026 snapshot |
| 5 | Zijin Mining | 2.09% | Apr. 30, 2026 snapshot |
| 6 | Eoptolink Technology | 1.99% | Apr. 30, 2026 snapshot |
| 7 | China Merchants Bank | 1.81% | Apr. 30, 2026 snapshot |
| 8 | Midea Group | 1.52% | Apr. 30, 2026 snapshot |
| 9 | Cambricon Technologies | 1.37% | Apr. 30, 2026 snapshot |
| 10 | Luxshare Precision | 1.30% | Apr. 30, 2026 snapshot |
Source 1: China Securities Index Co., Ltd.
Publisher: China Securities Index Co., Ltd.
Dataset/table: Top 10 Constituents
Units: percent of index weight; CNY billions
Date checked: 2026-05-28
Evidence: Supports CSI 300 top constituent weights, index scope, period and market-cap characteristics.
Only the top 10 CSI 300 constituents are included, so the row sum is top-10 coverage rather than full-index coverage.
Use the CSI 300 factsheet top-constituent weights as the canonical ranking. Values are percent index weights for Apr. 30, 2026.
Rows use one China Securities Index factsheet, one date and one unit; values are rounded index-weight snapshots.
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