Intraday CVaR Tail-Risk Factors for Chinese Equity Selection

Summary

The report proposes left- and right-tail conditional value-at-risk factors from intraday stock returns. For each stock, it describes measuring the average returns beyond the lower and upper 5% quantiles, then averaging daily values across a 20-trading-day window. It evaluates factor-sorted portfolios across the Chinese equity market and CSI 500 constituents, with weekly rebalancing and exclusions for recently listed, specially treated, or suspended stocks. The discussion also situates this work as a search for signals beyond traditional financial and lower-frequency price-volume factors.

The reported evidence is difficult to interpret consistently. The text mixes a broader historical summary involving other factors with a 2020 experiment, and gives conflicting or incomplete performance figures for the latter; some referenced charts and analyses are absent. It reports factor-ranking and information-coefficient observations, but these do not establish robust future returns. The author cautions that results rely on historical data and modeling assumptions, so the factors require careful reproduction and validation before use.

Key ideas

• The proposed factors summarize average returns in the lower and upper intraday tails.
• Daily tail measures are averaged over a rolling 20-trading-day period.
• The described portfolio test sorts stocks into five groups and rebalances weekly.
• The report covers the full market and CSI 500 constituents, with several stock exclusions.
• Its performance figures are inconsistent or incomplete, and historical results may not generalize.

Tags

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