A Stock Screen for Intraday Range, Volume, and Positive Gaps

Summary

This stock-selection screen looks for shares with a daily high-low range above a threshold, no limit-up move on the previous day, current trading volume above a stated level, and an opening price above the prior close. The rationale is that a wide range and elevated volume indicate activity, while a higher open may reflect a shift in investor sentiment. The document includes a Python example that applies these conditions to daily stock data.

The source warns that the criteria may be restrictive, miss candidates, or select speculative stocks. It suggests combining the screen with technical and fundamental measures and broadening its coverage. It provides no backtest or performance evidence, and the example’s implementation and thresholds should be checked against the relevant market’s price-limit rules, data definitions, and trading costs before use.

Key ideas

• The screen combines a wide daily range, prior-day limit-up exclusion, elevated volume, and a positive opening gap.
• The proposed rationale links high volume and a higher open with increased activity and changing investor sentiment.
• The source warns that strict filters can reduce coverage and still admit speculative stocks.
• The document provides selection logic and sample code but no evidence of historical or live profitability.

Tags

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