Robot-Theme Stocks with High Amplitude and Prior-Day Limit-Down Opens

Summary

This Chinese equity screen selects robot-concept stocks with price amplitude above 1%, circulating market capitalization below 10 billion yuan, and a prior-day 9:15 match price at the lower price limit. The proposed rationale is that high-amplitude shares may be active and that a limit-down indication could precede a rebound. The note also sketches indicator-formula and Python implementations of these filters.

No backtest, return series, or evidence supporting the rebound hypothesis is supplied. The document warns that the combined conditions may leave few candidates, concentrate risk, and fail when market conditions change or unexpected events occur. It suggests adding technical and fundamental filters, monitoring results, and setting exit controls. Its code uses a fixed 10% limit-down calculation and sample data fields, so actual implementation would need to account for market-specific price-limit rules and reliable timestamped auction data.

Key ideas

• The screen combines robot-concept membership, amplitude above 1%, and circulating capitalization below 10 billion yuan.
• It requires the previous day's 9:15 match price to be at the lower price limit.
• The suggested rebound interpretation is a hypothesis; the document offers no performance evidence.
• A narrow candidate set may concentrate risk, while sudden market changes can undermine the screen.
• The sample code uses a fixed 10% limit calculation and may require adjustments for actual market rules.

Tags

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