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

Market
+10.1%
Sector
-5.6%
Subsector
-0.6%
α residual
+24.3%
Stock
+28.1%
Every position carries the market, its sector, and its subsector before any stock-specific move. The waterfall splits AAPL'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=AAPL&years=1