A-Share Screening by Volatility, Convertible Bonds, and Recent Limit-Ups

Summary

The document proposes screening Chinese A-share stocks using three conditions: daily price amplitude above 1%, a nonempty convertible-bond name, and at least one limit-up event within the preceding month. It interprets amplitude as a volatility filter, the bond field as a company or financing characteristic, and a recent limit-up as evidence of strong short-term market interest. It also includes example selection logic and an implementation sketch, though these do not constitute a tested trading system.

The author cautions that the screen relies heavily on price and trading behavior and can select speculative or low-quality companies. A limit-up may reflect a temporary anomaly rather than persistent strength. Suggested refinements include adding valuation, earnings, macroeconomic, and policy measures, then assessing the selected names in combination. The document gives no backtest, return statistics, or evidence that the criteria predict future performance; the code examples also implement details that may not match the written description exactly.

Key ideas

• The proposed screen combines price amplitude, a convertible-bond-related field, and a recent limit-up event.
• The author treats volatility and recent limit-up activity as signs of trading interest, not as proof of fundamental quality.
• The approach may select speculative stocks because it omits a thorough fundamental assessment.
• A limit-up event can be temporary and may not indicate a durable trend.
• Valuation, earnings, and broader economic indicators are suggested as additional screening dimensions.

Tags

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