Using Relative Index Strength for Large-Cap and Small-Cap Rotation

Summary

This note introduces a market style rotation approach focused on large-cap versus small-cap Chinese equities. It explains that styles group stocks into opposing categories and that rotation describes changes in their relative leadership. Macroeconomic conditions, shifts in capital supply and demand, and investor reactions can all affect which group performs better. The note observes that the two groups have shown different returns over time, with periods when small caps led and other periods when large caps outperformed.

The proposed timing method compares two style indices through a ratio, using the CSI 300 divided by the CSI 500 as an example. A rising ratio indicates relative strength in large caps, while a falling ratio indicates relative strength in small caps. This is a conceptual framework rather than a fully specified trading system: the document gives no entry thresholds, holding rules, transaction costs, or historical performance tests. It also does not establish how reliably the ratio predicts future returns.

Key ideas

• Style rotation compares the relative performance of opposing groups of stocks.
• Macroeconomic changes, capital flows, and investor behavior may shift leadership between large and small caps.
• A ratio of the CSI 300 to the CSI 500 can represent their relative strength.
• A rising index ratio signals large-cap relative strength, while a falling ratio signals small-cap relative strength.
• The note does not specify trading rules or provide performance testing.

Tags

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