Stock Screening with Price Amplitude and Prior-Day Control Signals

Summary

The proposed stock screen combines daily price amplitude, a listing-age requirement, and a condition described as evidence of dominant-player control on the prior day. The accompanying rationale treats larger movement as a sign of activity, a longer listing history as a stability filter, and the control signal as a possible clue about trend or market attention. Suggested improvements include adding technical and fundamental measures, capital-flow information, or industry leadership criteria.

The document includes sample formulas based on price changes, MACD, volume changes, moving averages of money flow, and net money flow. However, the provided Python example does not cleanly match the stated screen: it calculates a close-to-close change, does not implement the listing-age condition, and selects when the prior net flow is negative. The written threshold and sample calculation also differ in how amplitude is expressed. These inconsistencies make the examples difficult to treat as a precise implementation. No backtest results or evidence of predictive value are supplied, and the author cautions that single-factor, headline-driven selection can amplify losses as well as gains.

Key ideas

• The stated screen combines price amplitude, listing age, and a prior-day control condition.
• The discussion suggests combining technical signals with fundamental, flow, or industry information.
• The sample formulas use MACD, volume, money-flow measures, and price changes.
• The Python example omits the listing-age filter and uses a negative prior net-flow condition.
• The document provides no performance evidence and warns about relying on a narrow set of signals.

Tags

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