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Portfolio selection with active risk monitoring

Paolella, Marc S.; Polak, Pawel - 2015

The paper proposes a framework for large-scale portfolio optimization which accounts for all the major stylized facts of multivariate financial returns, including volatility clustering, dynamics in the dependency structure, asymmetry, heavy tails, and nonellipticity. It introduces a so-called...

Persistent link: https://www.econbiz.de/10011410659

A non-elliptical orthogonal GARCH model for portfolio selection under transaction costs

Paolella, Marc S.; Polak, Pawel; Walker, Patrick S. - 2019

Covariance matrix forecasts for portfolio optimization have to balance sensitivity to new data points with stability in order to avoid excessive rebalancing. To achieve this, a new robust orthogonal GARCH model for a multivariate set of non-Gaussian asset returns is proposed. The conditional...

Persistent link: https://www.econbiz.de/10012134234

Heterogeneous tail generalized common factor modeling

Hediger, Simon; Näf, Jeffrey; Paolella, Marc S.; … - 2021

A multivariate normal mean-variance heterogeneous tails mixture distribution is proposed for the joint distribution of financial factors and asset returns (referred to as Factor-HGH). The proposed latent variable model incorporates a Cholesky decomposition of the dispersion matrix to ensure a...

Persistent link: https://www.econbiz.de/10012799624

Dynamic currency hedging with ambiguity

Polak, Pawel; Ulrych, Urban - 2021 - This version: August 2021

Persistent link: https://www.econbiz.de/10012614590

Market efficiency reloaded: why insider trades do not reveal exploitable information

Dickgiesser, Sebastian; Kaserer, Christoph - 2008

by a subset of stocks with high arbitrage risk as measured by their idiosyncratic volatility. This restrains arbitrageurs … from engaging in otherwise profitable and price-correcting trades. As arbitrage risk is positively related to a stock's bid … mainly be explained by the cost associated with risky arbitrage. Our findings provide evidence that the German stock market …

Persistent link: https://www.econbiz.de/10010305695

Market liquidity risk: an overview

Stange, Sebastian; Kaserer, Christoph - 2009

Market liquidity is the ease of trading an asset. Its risk is the potential loss, because a security can only be traded at high or prohibitive costs. While the omnipresence and importance of market liquidity is widely acknowledged, it has long remained a more or less elusive concept. Treatment...

Persistent link: https://www.econbiz.de/10010305705

Measuring market liquidity risk - which model works best?

Ernst, Cornelia; Stange, Sebastian; Kaserer, Christoph - 2009

Market liquidity risk, the difficulty or cost of trading assets in crises, has been recognized as an important factor in risk management. Literature has already proposed several models to include liquidity risk in the standard Value-at-Risk framework. While theoretical comparisons between those...

Persistent link: https://www.econbiz.de/10010305708

DAXplus family: Ein Aktienindex zur Darstellung der Performance von Familienunternehmen

Achleitner, Ann-Kristin; Kaserer, Christoph; Kauf, Tobias; … - 2010

In January 2010 the Deutsche Börse Group introduced two family firm stock indices. Both indices are calculated as price and performance indices and extend the number of investment strategy indices of Deutsche Börse Group. The DAXplus Family is an all-share index whereas the DAXplus Family 30...

Persistent link: https://www.econbiz.de/10010305712

Why and how to integrate liquidity risk into a VaR-framework

Stange, Sebastian; Kaserer, Christoph - 2008

We integrate liquidity risk measured by the weighted spread into a Value-at-Risk (VaR) framework. The weighted spread measure extracts liquidity costs by order size from the limit order book. We show that it is precise from a risk perspective in a wide range of clearly defined situations. Using...

Persistent link: https://www.econbiz.de/10010305731

The German entrepreneurial index (GEX®): a primer on an ownership-based style index in Germany

Achleitner, Ann-Kristin; Kaserer, Christoph; … - 2009

Recent research indicates that the majority of listed firms in Germany (and also in many other countries around the world) have a dominant owner rather than being widely-held. Hence, owner-dominated firms comprise an important subset of listed companies. This article introduces the concept of an...

Persistent link: https://www.econbiz.de/10010305735