Screening Stocks by Daily Range, Auction Volume, and Main-Player Control

Summary

This Chinese equity screening idea selects stocks with an amplitude above 1, a product of yesterday’s turnover and today’s auction volume relative to yesterday’s volume between 0.5 and 2, and a prior-day signal that major market participants controlled the stock. The article frames these filters as a way to find active, volatile stocks with notable capital interest. Its Python example also checks a main-money flow measure and a prior-day control-board value, though the code’s data fields and calculations may not match the described formula precisely.

The author notes that high volatility and liquidity-driven signals can select short-lived rebounds or stocks exposed to sharp swings. A control signal can also reflect temporary news or sentiment, and the amplitude measure may behave differently across industries. Proposed refinements include volume and momentum indicators, sector-aware treatment, company fundamentals, and additional measures of capital flows or ownership changes. The article provides no test results, benchmark, or evidence that its added suggestions were implemented, so the screen should be treated as a hypothesis requiring validation.

Key ideas

• The screen combines amplitude above 1 with a bounded turnover and auction-volume ratio.
• It also requires a prior-day signal of major-player control.
• The Python example adds money-flow checks, while its implementation may diverge from the stated logic.
• High volatility and short-term capital signals can produce unstable selections.
• The article suggests sector-aware, technical, and fundamental filters but reports no performance evidence.

Tags

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