Decomposing Equity Risk: The Case for Segment-Level Financial Derivatives with Automated Regulatory Settlement

Ameer Hamza Hamza

MPRA Paper from University Library of Munich, Germany

Abstract: Equity markets price corporations as unified entities, yet large companies are composites of fundamentally different businesses. A fund manager who believes Amazon’s AWS will outperform while e-commerce underperforms has no exchange-listed instru- ment to express that view. This structural gap suppresses informed trading, impairs price discovery, and prevents segment-level risk transfer and alpha generation from thematic exposures. We argue that mandatory XBRL-tagged SEC filings have created for the first time a technically viable foundation for segment-level financial derivatives. Using five years of audited data for Amazon and Apple, we show that hypothetical segment strategies generate sustained alpha largely uncorrelated with par- ent equity returns and serve as efficient hedges for thematic portfolios. Segment-level derivatives represent a significant and addressable gap in financial market infrastructure.

Keywords: financial derivatives; market microstructure; business segment reporting; XBRL; price discovery; risk decompo- sition; prediction markets; regulatory filings; earnings forecasting (search for similar items in EconPapers)
JEL-codes: C8 C81 C87 (search for similar items in EconPapers)
Date: 2026-04-20, Revised 2026-04-20
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