Signal Validity: Why Every Trading Setup Needs a Lifecycle

A scanner can correctly identify a volatility contraction at 8:00 AM and still produce a dangerous entry card at 2:00 PM. The stock may have broken below structure, run far beyond the entry zone, reached a target, or simply aged beyond the setup's useful window.

Signal generation answers, “Was this setup valid when it was found?” Signal validity answers, “Is the same plan still coherent now?”

The Three Decision States

Active

The signal remains inside its actionable price and time window. Its target ladder is valid, price has not broken the structural stop, and the setup has not already completed. Active is a statement about the setup's structure, not a prediction or recommendation.

Triggered

Price crossed the scan entry trigger. At this point the signal moves from preparation into outcome tracking. Targets, stop events, maximum favorable excursion, and maximum adverse excursion can now be evaluated against the original frozen plan.

Invalidated

The original plan should no longer be used for a new entry. This can happen because structure failed, the stop was reached, price moved too far away from the entry zone, a target was already completed, or the setup exceeded its maximum age.

Price Decay and Time Decay

Traders often think of decay as a time problem, but price can invalidate a setup in minutes. A stock 19% below its original trigger no longer has the same support, stop distance, or reward-to-risk. A stock far above its entry zone may still be strong, but the original entry plan has already passed.

Time decay matters even when price remains nearby. A setup that has not triggered after many trading sessions may represent a different base, different market regime, and different institutional behavior. The scanner should create a new plan from current evidence rather than indefinitely preserving the old one.

Outcome State Is Not the Same as Entry Validity

A signal can be historically useful after it stops being actionable. A triggered setup that reached T2 belongs in performance analytics. A stopped-out setup belongs in review data. Neither belongs in a list of fresh entry candidates.

• Entry surfaces should fail closed and show only current plans.
• Lifecycle history should explain why a card changed or disappeared.
• Outcome analytics should retain the frozen trigger, stop, targets, and timestamps.

Why the Reason Matters

A status badge without a reason can feel arbitrary. “Price broke structure” teaches something different from “entry window expired” or “T1 was already reached.” The reason lets the trader understand whether the setup failed, succeeded, or merely became too old for the original plan.

How TradeRegimen Uses the Lifecycle

TradeRegimen reconciles stored signals against current quotes and existing outcome rows before showing an entry CTA. The Today screen displays Active, Triggered, and Invalidated lifecycle states with a bounded recent history. Invalidated plans remain useful for review, but they cannot silently reappear from a stale cache as new entries.