12 papers
Portfolio Optimization under Heavy Tails and Asymmetric Volatility: Evidence from Taiwan-Exposed ETFs
Ting-Jung Lee, Abootaleb Shirvani, Farzana Afroz +2
Taiwan's central role in global semiconductor manufacturing exposes Taiwan-related ETFs to technology concentration, geopolitical uncertainty, and supply-chain disruptions, resulti…
Portfolio Optimization and Tail-Risk Analytics of Actively Managed ETFs
William W. Lamptey, Nicholas Appiah, Abootaleb Shirvani +3
This paper examines portfolio optimization and tail-risk analytics for a heterogeneous universe of actively managed investment funds. Using daily Bloomberg data for 30 funds from 4…
Innovative Extensions to Option Pricing: Asymmetric Brownian Motion and Random Walk Approaches
Jagdish Gnawali, Abootaleb Shirvani, Dilmi C. W. Hettiachchi-Halpe-Kankanamalage +3
Classical option pricing models, such as Bachelier and Black--Scholes--Merton, postulate symmetric Brownian diffusion, which limits their capacity to reflect empirical phenomena in…
Option-Implied Zero-Coupon Yields: Unifying Bond and Equity Markets
Ting-Jung Lee, W. Brent Lindquist, Svetlozar T. Rachev +1
This paper addresses a critical inconsistency in models of the term structure of interest rates (TSIR), where zero-coupon bonds are priced under risk-neutral measures distinct from…
Performance and Risk Analytics of Asian Exchange-Traded Funds
Bhathiya Divelgama, Nancy Asare Nyarko, Naa Sackley Dromo Aryee +2
Investing in Asian markets through exchange-traded funds (ETFs) provides investors with access to rapidly expanding economies and valuable diversification opportunities. This study…
Behavioral Probability Weighting and Portfolio Optimization under Semi-Heavy Tails
Ayush Jha, Abootaleb Shirvani, Ali M. Jaffri +2
This paper develops a unified framework that integrates behavioral distortions into rational portfolio optimization by extracting implied probability weighting functions (PWFs) fro…