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Next filing · Form 13F · Q2 2026 · 3 days
Next filing · Form 13F · Q2 2026 · 3 daysMethodology Paper · Part III published: The One Manager Skill That PersistsAPI Update · Point-in-Time (PIT) historical commit tracking — securities and funds unifiedAPI Update · ERM3 L3 variance partition — institutional transparency releasePart 3 · The Persistence of Stock-Selection ResidualsPart 1 · One Position, Four BetsNext filing · Form 13F · Q2 2026 · 3 daysMethodology Paper · Part III published: The One Manager Skill That PersistsAPI Update · Point-in-Time (PIT) historical commit tracking — securities and funds unifiedAPI Update · ERM3 L3 variance partition — institutional transparency releasePart 3 · The Persistence of Stock-Selection ResidualsPart 1 · One Position, Four Bets
Ledger

Risk decomposition

AMZN

Market → sector → subsector → α-residual · 2026-02-18 → 2026-08-10

AMZN factor & risk decomposition snapshot
Market
+19.3%
Sector
-13.5%
Subsector
-0.2%
α residual
+30.9%
Stock
+36.4%

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

How the decomposition works →Research →Run any ticker via the API →

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