Testing Institutional Ownership as a Chinese Equity Selection Factor

Summary

The study tests institutional ownership data as a quarterly stock-selection factor in Chinese equities. It measures ownership share, the number of institutions holding a stock, and average holdings per institution as a proxy for ownership concentration. For each measure, it calculates information coefficients against the following quarter’s stock alpha and smooths the results over time. The reported ownership-share IC changes sign across historical periods, while the number-of-holders measure has weaker average results. The concentration proxy is described as positive in most periods.

The analysis also ranks industries by an IC-to-variability measure, then selects nine industries with stronger readings. Within those industries, a quarterly strategy buys ten stocks with the highest institutional ownership share. The document reports an annualized return and says the strategy’s maximum drawdown is substantial, but supplies no full test setup, transaction costs, benchmark comparison, or robustness checks. Its evidence is historical and unstable across periods, so the factor and reported backtest should not be treated as proof of persistent future performance.

Key ideas

• The analysis relates quarterly institutional ownership measures to next-quarter stock alpha.
• Ownership share has unstable single-period information coefficients and changes direction over time.
• The author uses ownership share divided by holder count as a proxy for concentration.
• Industry selection uses an information-coefficient-to-variability ranking before portfolio construction.
• The reported concentrated strategy has a notable drawdown, and the document omits key robustness details.

Tags

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