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Using Northbound Investor Seat Flows to Build China Sector Factors

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Summary

The report uses Hong Kong Exchange disclosures on holdings associated with northbound Stock Connect trading seats to estimate stock positions and sector-level additions. It argues that aggregate flows can obscure differences among market participants, then separates seats by type to distinguish longer-term allocation activity from shorter-term trading. The resulting seat-level measures are mapped to industries and used to construct sector selection factors, alongside related factors for stock and industry rotation strategies.

The report describes selecting factor parameters over a historical period and comparing portfolios rebalanced every two or five weeks. It reports annualized returns for both portfolio frequencies and monthly excess returns during a later market decline. These are backtest claims from the document, not independently verified evidence. The available text omits factor formulas, detailed portfolio construction, transaction costs, and robustness checks, so readers cannot assess implementation or whether the reported results persist out of sample.

Key ideas

  • Aggregate northbound flows may combine investors with different trading horizons and objectives.
  • The report classifies eligible trading seats to distinguish allocation activity from shorter-term trading.
  • Seat-level holding changes are mapped to industries to construct sector selection factors.
  • The strategy description includes stock and industry portfolios with two rebalancing frequencies.
  • Reported backtest results lack sufficient methodological detail in the excerpt for independent evaluation.

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.