Goldman: China’s mid-June index reshuffle to spur $48B flows

Goldman Sachs estimates the semi-annual rebalancing of China’s onshore indexes in mid-June will create more than $48 billion in gross two-way passive flows. The figure covers both expected purchases and sales by funds that track the affected benchmarks.

Constituents of the CSI 300, CSI 500 and CSI 1000 will be adjusted at the close of trading on June 12. Shenzhen-linked gauges, including the Shenzhen Component Index, ChiNext Index, Shenzhen 100 Index and ChiNext 50 Index, will be adjusted on June 15. The reshuffle also applies to the SSE 50, SSE 180 and STAR 50.

China Securities Index Co. reported the adjustments increase the weighting of information technology, telecommunications and industrial companies in the affected benchmarks. The change reflects a higher allocation to technology and strategic industrial sectors in the revised indexes.

Goldman highlighted a group of semiconductor and technology-related names expected to receive passive buying, including Huagong Tech, Yuanjie Semiconductor Technology and Hua Hong Semiconductor. The bank also flagged GigaDevice, VeriSilicon, Piotech and Zhejiang Century Huatong as stocks likely to see passive inflows.

The rebalancing will also produce selling pressure where firms are removed from indexes or see reduced weights. Goldman expects Beijing-Shanghai High Speed Railway, Hengtong Optic-Electric, Shaanxi Coal and Haier Smart Home to face some of the largest passive outflows tied to index deletions. The bank notes that such forced selling follows index rules rather than being a direct assessment of company fundamentals.

Passive funds that track these benchmarks typically rebalance holdings around implementation dates, which concentrates buying and selling into narrow windows. Index rebalances can move individual share prices when large passive assets must trade within those windows. Active managers will monitor liquidity, positioning and potential price dislocations in the names with the largest expected flows.

Goldman’s gross two-way estimate captures the scale of mechanical trading linked to the reshuffle rather than a net capital change into the market. The adjusted index weights will take effect on the specified June trading dates and index-tracking portfolios will be updated to match the revised compositions.