21 brands scored across 5 SBPI dimensions, with edge analysis, stability layer, and W19 predictions. Netflix’s +3.55 is the largest single-week composite gain in tracker history. Mansa promotes T4 to T3 on the 10-title slate announcement.
Distribution Power 25%, Content Strength 20%, Narrative Ownership 20%, Community Strength 20%, Monetization Infrastructure 15%. Composite scored 0 to 100 from verifiable public signals within the April 27 to May 3, 2026 research window.
Borrowed from control theory by way of the lyapunov-research project. The category is a landscape with valleys. A brand’s composite score is its altitude. The Stability layer asks how steep the slope is under that brand’s feet. Fit on 8 weeks of W10 to W17 data with validation 0.714 (B− on a 0 to 1 scale, meaning the slope readings agree with how brands actually moved roughly 71% of the time over the holdout window). Penalty: adjusted = composite × (1 − 0.05 × V / 4.41). The penalty is intentionally small so it surfaces rank inversions only where stability really diverges from composite.
Stability methodology brief: lyapunov-research.pages.dev · W17 Stability edition: microco-w17-stability.pages.dev · Editorial brief: W18-2026.html
SBPI scores are research-grounded analytical assessments, not financial advice or investment recommendations. Editorial standards: every score change cites a specific dated signal from the research window. No conflict-of-interest disclosures in this issue.