Risk decomposition
AMZN
Market → sector → subsector → α-residual · 2026-04-10 → 2026-09-30

Market
+18.7%
Sector
-19.2%
Subsector
+0.2%
α residual
+4.9%
Stock
+4.6%
Every position carries the market, its sector, and its subsector before any stock-specific move. The waterfall splits AMZN's realized return into those benchmark layers; the α residual is what the three hedge layers do not explain.
source: RiskModels — GET /ticker-returns?ticker=AMZN&years=1