Risk decomposition
BAC
Market → sector → subsector → α-residual · 2026-04-22 → 2026-10-12

Market
+7.7%
Sector
-0.3%
Subsector
-1.8%
α residual
-1.8%
Stock
+3.8%
Every position carries the market, its sector, and its subsector before any stock-specific move. The waterfall splits BAC'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=BAC&years=1