- Auction Decay | Performance Marketing Glossary | eonik Pricing Download 
# Auction Decay

## What is Auction Decay?

Auction decay occurs when Meta or TikTok expands delivery beyond the highest-intent cohort into colder pools. Hook rate often slips versus the same asset’s launch window, CPC rises, and contribution can compress. Timing is account-specific, not a published half-life. Read it against your own account. eonik is a Mac app for ads: consider what to make next, then the on-brand cut. You approve. It never spends.

 Abinash · June 9, 2026 · Updated August 13, 2026 

Testing cluster

Pillar: Creative testing math 

 Variant workflow 

- Hook rate 

- Hold rate 

- Ad fatigue 

- Creative velocity 

- UGC framework 

- How to read Meta metrics 

- Limited-budget tests 

- Programmatic creative 

## What is Auction Decay?

Auction decay occurs when Meta or TikTok expands delivery beyond the highest-intent cohort into colder pools. Hook rate often slips versus the same asset’s launch window, CPC rises, and contribution can compress. Timing is account-specific, not a published half-life. Read it against your own account. eonik is a Mac app for ads: consider what to make next, then the on-brand cut. You approve. It never spends.

This term defers to the pillar guide. Formulas, how to read them, what to make next:

 Read the canonical guide → 
## Where it shows up in a test

Introduce net-new structural assets before decay curves inflect. Velocity (not bid tweaks) resets the auction signal.

## How to use it in eonik

Introduce net-new structural assets before decay curves inflect. Velocity (not bid tweaks) resets the auction signal.

## What usually breaks

- Inventing a published Auction Decay benchmark.

- Treating the glossary as a spend rule.

- Skipping the pillar guide when one exists.

## FAQ

### What is Auction Decay?

Auction decay occurs when Meta or TikTok expands delivery beyond the highest-intent cohort into colder pools. Hook rate often slips versus the same asset’s launch window, CPC rises, and contribution can compress. Timing is account-specific, not a published half-life. eonik is a Mac app for ads. You approve every cut. It never spends. Download for Mac when assembly is the gap.

### How do performance teams apply Auction Decay?

Introduce net-new structural assets before decay curves inflect. Velocity (not bid tweaks) resets the auction signal. Isolate one variable. Compare to your baseline, not a published benchmark. eonik is a Mac app for ads. You approve every cut. It never spends. Download for Mac when assembly is the gap.

### Does eonik publish a Auction Decay benchmark?

No. There is no official eonik or Meta league table for Auction Decay. Compare variants in the same account and window. eonik is a Mac app for ads. You approve every cut. It never spends. Download for Mac when assembly is the gap.

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