A Note on Portfolio Optimization and the Diagonal Covariance Matrix

D Disatnik - Available at SSRN 1416849, 2009 - papers.ssrn.com
Recent papers show that, due to estimation errors, existing and rather advanced mean-variance
theory-based portfolio strategies do not consistently outperform the naïve 1/N portfolio …

[PDF][PDF] Shrinking the covariance matrix–Simpler is better

D Disatnik, S Benninga - Journal of Portfolio Management, 2007 - simonbenninga.com
This paper deals with the construction of the covariance matrix for portfolio optimization. We
show that in terms of the ex-post standard deviation of the global minimum variance portfolio…

Estimating the covariance matrix for portfolio optimization

D Disatnik, S Benninga - Available at SSRN 873125, 2006 - papers.ssrn.com
We discuss the estimation of the covariance matrix of stock returns for portfolio optimization
and show that for constructing the global minimum variance portfolio (GMVP), there is no …

An equilibrium theory of the dilute solutions of3He in superfluid4He at very low temperatures

Y Disatnik, H Brucker - Journal of Low Temperature Physics, 1972 - Springer
Disatnik and H. Brucker … where j stands for the momentum density of the solution in the
absence of a macroscopic … J'At T = 0, when vo is assumed to be equal to -~(m4So/n40)O~ol …

Cash flow hedging and liquidity choices

D Disatnik, R Duchin, B Schmidt - Review of Finance, 2014 - academic.oup.com
This article studies the interaction between corporate hedging and liquidity policies. We present
a theoretical model that shows how corporate hedging facilitates greater reliance on cost…

The mitochondrial dynamics of Alzheimer's disease and Parkinson's disease offer important opportunities for therapeutic intervention

DJ Bonda, MA Smith, G Perry, H Lee… - Current …, 2011 - ingentaconnect.com
Mitochondrial dynamics play a crucial role in the pathobiology underlying Alzheimer's disease
(AD) and Parkinson's disease (PD). Although a complete scientific understanding of these …

Target-based drug discovery through inversion of quantitative structure-drug-property relationships and molecular simulation: CA IX-sulphonamide complexes

…, G Sagandykova, M Belka, J David… - Journal of enzyme …, 2018 - Taylor & Francis
In this work, a target-based drug screening method is proposed exploiting the synergy effect
of ligand-based and structure-based computer-assisted drug design. The new method …

Portfolio optimization using a block structure for the covariance matrix

D Disatnik, S Katz - Journal of Business Finance & Accounting, 2012 - Wiley Online Library
Implementing in practice the classical mean‐variance theory for portfolio selection often results
in obtaining portfolios with large short sale positions. Also, recent papers show that, due …

Need for cognitive closure, risk aversion, uncertainty changes, and their effects on investment decisions

D Disatnik, Y Steinhart - Journal of marketing research, 2015 - journals.sagepub.com
Investment decisions play a crucial role in the way consumers manage their wealth, and
therefore, it is important to understand how consumers make these decisions. This research …

[HTML][HTML] Multicollinearity is a red herring in the search for moderator variables: A guide to interpreting moderated multiple regression models and a critique of Iacobucci …

GH McClelland, JR Irwin, D Disatnik, L Sivan - Behavior research methods, 2017 - Springer
David Disatnik & Liron Sivan … The focus of Disatnik and Sivan (2016) is also the
unimportance of multicollinearity concerns in moderated multiple regression analysis, but the …