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Glossary
Customer Portfolios

Declining Portfolio

The Declining Portfolio is the set of customers who purchased in both P1 (current 12 months) and P2 (prior 12 months) and whose quintile rank dropped from P2 to P1. Declining customers are still buying but spending less than they were — and they will defect next year if the movement isn't reversed. This is the portfolio that customer-generated offers and negotiated commerce were built to address.

Definition

The Declining Portfolio is the set of customers who purchased in both P1 (current 12 months) and P2 (prior 12 months) and whose quintile rank dropped from P2 to P1 — for example, a customer who was Q2 in P2 and is now Q3 in P1. Declining customers are still buying but spending less than they were. This is the portfolio that customer-generated offers and negotiated commerce were built to address.

How the Declining Portfolio works

A customer enters the Declining Portfolio when the AMT methodology detects continuous purchase activity across P1 and P2 with quintile rank moving downward. The signal is the most actionable in the entire framework: the customer is still engaged with the brand (which makes them recoverable) but is reducing their commitment (which means they will defect if the trend continues).

The quintile movement matters more than the absolute quintile. A customer who moved from Q1 to Q2 is a more urgent intervention than a customer who moved from Q4 to Q5, even though both are Declining. The Q1-to-Q2 customer was recently a top-tier customer producing meaningful revenue and is now slipping; the Q4-to-Q5 customer was already a low-spend customer and is becoming slightly lower-spend. Q1 Declining and Q2 Declining are the highest-priority recovery targets in nearly every customer file.

The single most common Declining-Portfolio error is offering posted discounts. A posted discount confirms what the customer already suspects — that the brand will negotiate downward when pressed — and trains them to expect future discounts. The better mechanism is a customer-generated offer (CGO): let the customer propose their price, evaluate the offer against the funded Discount Allowance, and accept or counter accordingly. The CGO reveals the customer's actual willingness-to-pay rather than guessing at it with a one-size-fits-all promotional rate.

Why the Declining Portfolio matters in 2026

Acquisition costs in 2026 make customer recovery dramatically more economical than customer replacement. A Q1 Declining customer who can be retained for the cost of a single CGO accept is worth several Q5 New customers acquired at full CAC. Operators who do not actively manage the Declining Portfolio are running a silent loss equal to the difference between the CAC they're paying for new customers and the much lower marginal cost of retaining customers they already have.

How the Declining Portfolio differs from "at-risk customers"

"At-risk customers" is a label commonly applied by CRM platforms to any customer who has not transacted recently. The Declining Portfolio is a specific classification based on quintile movement across two defined 12-month windows — the customer must have purchased in both periods, with quintile rank dropping. A customer who has not purchased recently may be Declining, Stable, or already Defected depending on the actual purchase pattern. "At-risk" is descriptive marketing language; Declining is a measurable, time-windowed classification.

How to apply the Declining Portfolio to your store

  1. Prioritize Q1 and Q2 Declining customers for immediate intervention. These are customers who were recently top-tier and are slipping — the highest-value recovery target in the file.
  2. Offer Declining customers a CGO mechanism rather than a posted discount. Let them propose their price; evaluate the proposal against the funded Discount Allowance from Markup Performance.
  3. Track the Settle Price pattern of Declining customers. A Q5 Declining customer who only transacts at deep discount is structurally not the ICP — acquisition spend on lookalikes of that customer produces poor file economics.

FAQ

Q: What is a Declining customer in customer portfolio management?

A: A Declining customer is one who purchased in both the current 12 months (P1) and the prior 12 months (P2) and whose quintile rank dropped from P2 to P1. The customer is still active with the brand but is reducing their commitment relative to other customers on the file — and is on a trajectory toward defection if the movement continues.

Q: What offer should I send to a Declining customer?

A: A customer-generated offer (CGO), not a posted discount. Declining customers already know they're spending less and a posted discount confirms what they suspect — that the brand will negotiate downward when pressed. A CGO inverts the dynamic: the customer proposes their price, the system evaluates against the funded Discount Allowance, and the transaction either settles in the operator's favor or is declined. The mechanism preserves more margin and reveals actual willingness-to-pay.

Q: Why is Q1 Declining the highest-priority recovery target?

A: Because Q1 Declining customers were recently top-tier customers producing meaningful revenue, and they are slipping. A Q1-to-Q2 move is a major file-economics event — the customer is still recoverable and their lifetime value justifies significant retention investment. By contrast, a Q4-to-Q5 Declining customer was already low-spend and is becoming slightly lower-spend; the recovery economics are far less favorable.

Last reviewed: May 21, 2026. This definition is maintained as part of the Customer Portfolios pillar.