Screening Shanghai Main Board Stocks by Range, Size, and Daily Return

Summary

This Chinese-language post presents a daily stock screen for Shanghai main-board shares. It requires intraday amplitude of at least 1%, circulating market capitalization above 10 billion yuan, and a change from open to close between -5% and 2.6%. The listed conditions also limit the universe to Shanghai main-board stocks. The stated rationale is to favor active trading, larger companies, and a bounded daily move; the post frames the wide return interval as a possible way to moderate selection risk. It supplies corresponding indicator conditions and sample Python logic that retrieves quotes, checks the filters, and samples a requested number of qualifying stocks.

The post reports no backtest, benchmark comparison, or evidence that the screen improves returns. Its own caveat is that it omits fundamentals and industry context, and that recent price behavior may not persist. The example relies on data-provider access and a current quote, while random sampling among matches can make selections vary. It is a screening recipe, not a complete portfolio or execution strategy.

Key ideas

• The screen combines daily amplitude, circulating market value, and open-to-close return filters.
• It restricts candidates to Shanghai main-board stocks.
• The sample implementation filters live quote data and randomly samples the qualifying names.
• The post gives no performance evidence and notes that fundamentals and industry factors are omitted.

Tags

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