Cost-of-living pressure and a genuine improvement in perceived quality have pushed retailer own-brands past a tipping point in US and UK grocery — Costco's Kirkland Signature alone is now a ~$90bn brand — forcing branded CPG majors into a structural share-and-margin fight they cannot fully win back even once inflation cools.
📈 What changed: US store-brand unit market share hit a record 23.8% in H1 2026 (six months to Jun 14) — unit sales up 0.2% year-over-year vs national brands' -0.5%, the widest unit-share spread o…
| Indicator | Score | Reading |
|---|---|---|
| Maturity higher is better · high confidence | 82/100 | Private label is a scaled, mainstream retail category in the US, UK and Europe, not an emerging or niche format. |
| Evidence Strength higher is better · medium confidence | 85/100 | Core figures are corroborated across an audited company filing, established research houses and multiple independent company disclosures. |
| Commercial Proximity higher is better · high confidence | 78/100 | Recurring, disclosed revenue at scale today across multiple retailers, not a future or hypothetical wedge. |
| Capital & Policy Support higher is better · medium confidence | 26/100 | This is an overwhelmingly private-capex and consumer-behavior-driven theme with essentially no public-policy or regulatory driver. |
| Crowding Risk lower is better · medium confidence | 55/100 | Crowding diverges sharply by name: Costco trades as an expensive, heavily-owned mega-cap staple while the UK grocers remain comparatively modestly valued. |
| Reflexivity Risk lower is better · medium confidence | 15/100 | Low across the board — this is an earnings- and disclosed-sales-grounded consumer-staples theme, not a narrative- or capital-markets-dependent one. |
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