Screening Equities by Relative Volume and Bollinger Band Position

Summary

This post describes an equity screening rule that ranks stocks by relative volume and selects those whose closing prices lie between the Bollinger Band middle line and upper band. The stated example limits the selection period to 2021. The accompanying explanation interprets stronger relative volume as a sign of buying interest and the band position as evidence of short-term price strength.

The post warns that volume alone does not account for selling pressure, that a short-term signal may reverse, and that a single-year restriction can exclude opportunities from other periods. It suggests incorporating outflow measures, tuning Bollinger parameters, and broadening the date range. No constituents, backtest results, or validation are provided, and the final selection logic shown in the article is incomplete. The screen is therefore a candidate filter rather than evidence of a profitable strategy.

Key ideas

• The screen ranks stocks by relative volume and filters for closes between the Bollinger middle and upper bands.
• The example restricts its historical selection period to 2021.
• The post treats relative volume and band position as short-term strength signals.
• The suggested improvements include measuring selling pressure and reviewing more periods.
• No performance data or completed validation is reported.

Tags

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