Screening Profitable 2021 Listings by Turnover and Market Capitalization

Summary

This screen seeks profitable companies listed in 2021, with market capitalization no greater than 10 billion yuan and turnover between 3% and 12%. The article presents the rule in prose, an indicator-style expression, and sample Python using stock-list and market data. Its stated rationale is to combine trading activity, company size, listing age, and positive earnings when selecting equities.

The article warns that static listing-year and size filters can become less relevant as conditions change, a low size ceiling may admit less competitive businesses, and financial screens can overlook broader market conditions. It suggests adding measures such as dividends or earnings growth and considering industry trends. The examples are implementation references rather than demonstrated results: no backtest, portfolio returns, or validation is reported. The code's field mappings and date handling are not fully explained, so the sample should not be assumed to implement every stated condition faithfully.

Key ideas

• The proposed screen selects 2021 listings with positive earnings and a stated market-cap ceiling.
• It restricts turnover to a band from 3% to 12%.
• The article offers indicator and Python examples but does not report backtest results.
• The author cautions that static filters and size limits can omit relevant market and business context.
• Additional financial measures and industry trends are suggested as possible complements.

Tags

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