Beyond Gamma Exposure : Four-Lens Framework for Options Trader Who See What GEX Misses

Djouad, Djellal (2026): Beyond Gamma Exposure : Four-Lens Framework for Options Trader Who See What GEX Misses.

Abstract

Dealer gamma exposure (GEX) has become the dominant retail and semi-institutional framework for interpreting equity index dynamics. This paper argues that GEX carries a quantifiable 30-50% error margin and fails systematically in four market configurations: sovereign crises, physical commodity squeezes, geopolitical commodity shocks, and currency peg breaks. We propose a four-lens framework: (1) Gamma, (2) Vega Exposure, (3) Risk Reversal 25-delta, and (4) Term Structure and Physical Signals. The decision rule is confluence: when three of four lenses align, the signal is actionable. The framework is validated against five publicly documented, time-stamped calls on X (formerly Twitter) prior to major market dislocations. Working paper adapted from: CrossVol Research (2026). Beyond Gamma Exposure: Four-Lens Framework for Options Trader Who See What GEX Misses. Amazon Kindle, ASIN: B0H2RZGMY6. https://www.amazon.com/dp/B0H2RZGMY6

• Item Type: MPRA Paper
• Language: English
• Keywords: gamma exposure, dealer positioning, vega exposure, risk reversal, term structure, options market microstructure, short-vol unwind, autocalls, market dislocations, Bayesian Kelly
• Subjects: G - Financial Economics > G1 - General Financial Markets > G13 - Contingent Pricing ; Futures Pricing; G - Financial Economics > G1 - General Financial Markets > G14 - Information and Market Efficiency ; Event Studies ; Insider Trading; G - Financial Economics > G1 - General Financial Markets > G15 - International Financial Markets; G - Financial Economics > G1 - General Financial Markets > G17 - Financial Forecasting and Simulation

References

Carr, P. & Wu, L. (2009). Variance Risk Premiums. Review of Financial Studies, 22(3), 1311-1341. Driessen, J., Maenhout, P. & Vilkov, G. (2009). The Price of Correlation Risk. Journal of Finance, 64(3), 1377-1406. CrossVol Research (2026). Beyond Gamma Exposure: Four-Lens Framework for Options Trader Who See What GEX Misses. Amazon Kindle, ASIN: B0H2RZGMY6. https://www.amazon.com/dp/B0H2RZGMY6