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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Neúplná stochastická dominance / Almost stochastic dominance

Štefánik, Adam January 2012 (has links)
Title: Almost stochastic dominance Author: Adam Štefánik Department: Probability and Mathematical Statistics Supervisor: RNDr. Ing. Miloš Kopa, PhD. Department of Probability and Mathematical Statistics, MFF UK Abstract: In the presented work we study the almost stochastic dominance and it's properties. Almost stochastic dominance is a relaxation of stochastic dominance. Almost stochastic dominance also deals with paradox situations occurring in case of stochastic dominance. This is a situation when stochastic dominance determines indifferent relation- ship between two portfolios, but in fact almost all investors can choose the better one. The original almost stochastic dominance presented by Leshno and Levy (2002) is compu- tationally expensive. Lizyayev and Ruszczy'nski (2012) suggested an alternative approach. This work introduces both approaches. The most interesting part of this work is a search for efficient portfolio with respect to the almost stochastic dominance by the simple linear programming. Lizyayev and Ruszczy'nski (2012) approach is applied to Kopa and Chovanec (2008) quantile approach for portfolio efficiency testing with respect to second order stochastic dominance. Keywords: almost stochastic dominance, efficiency, CVaR
2

O desempenho dos hedge funds brasileiros a partir da não normalidade de seus retornos

Risério, Guilherme Silva 26 February 2014 (has links)
Submitted by Guilherme Risério (guilherme.riserio@gmail.com) on 2014-03-17T18:48:40Z No. of bitstreams: 1 O DESEMPENHO DOS HEDGE FUNDS BRASILEIROS A PARTIR DA NÃO NORMALIDADE DE SEUS RETORNOS - GUILHERME RISERIO.pdf: 4785756 bytes, checksum: 67e0577d6e7563bff201f16f19a2fd59 (MD5) / Approved for entry into archive by PAMELA BELTRAN TONSA (pamela.tonsa@fgv.br) on 2014-03-17T19:15:53Z (GMT) No. of bitstreams: 1 O DESEMPENHO DOS HEDGE FUNDS BRASILEIROS A PARTIR DA NÃO NORMALIDADE DE SEUS RETORNOS - GUILHERME RISERIO.pdf: 4785756 bytes, checksum: 67e0577d6e7563bff201f16f19a2fd59 (MD5) / Made available in DSpace on 2014-03-17T19:26:19Z (GMT). No. of bitstreams: 1 O DESEMPENHO DOS HEDGE FUNDS BRASILEIROS A PARTIR DA NÃO NORMALIDADE DE SEUS RETORNOS - GUILHERME RISERIO.pdf: 4785756 bytes, checksum: 67e0577d6e7563bff201f16f19a2fd59 (MD5) Previous issue date: 2014-02-26 / Devido à utilização de estratégias distintas de investimento dos hedge funds brasileiros caracterizadas pelo uso de derivativos, operações alavancadas e vendas a descoberto, esses fundos apresentam significante não normalidade dos retornos gerados. Portanto, as medidas usuais de avaliação de performance são incapazes de fornecer resultados consistentes com o verdadeiro desempenho dos portfólios de hedge fund. Este trabalho irá utilizar duas metodologias não tradicionais para analisar a performance dos hedge funds brasileiros e determinar qual estratégia supera o mercado acionário. Serão utilizadas duas medidas não paramétricas, Almost Stochastic Dominância (ASD) e Manipulation-Proof Performance Measure (MPPM). Os resultados demonstram que os hedge funds brasileiros não superam os benckmaks utilizados na dominância de primeira ordem, mas quando analisada a dominância de segunda ordem sete estratégias apresentaram desempenho superior ao Índice Ibovespa.

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