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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

Análise em tempo real de comportamento explosivo em preços no Brasil

Yoshioka, Marcelo Ehara 04 February 2013 (has links)
Submitted by marcelo yoshioka (marcelo.ehara@gmail.com) on 2013-03-05T18:48:21Z No. of bitstreams: 1 Dissertação MPFE - Marcelo Ehara.pdf: 697348 bytes, checksum: c264ac718862b8315410772444b9eb00 (MD5) / Approved for entry into archive by Suzinei Teles Garcia Garcia (suzinei.garcia@fgv.br) on 2013-03-05T19:25:16Z (GMT) No. of bitstreams: 1 Dissertação MPFE - Marcelo Ehara.pdf: 697348 bytes, checksum: c264ac718862b8315410772444b9eb00 (MD5) / Made available in DSpace on 2013-03-06T12:39:18Z (GMT). No. of bitstreams: 1 Dissertação MPFE - Marcelo Ehara.pdf: 697348 bytes, checksum: c264ac718862b8315410772444b9eb00 (MD5) Previous issue date: 2013-02-04 / his study aims to determine the existence of explosive behavior in prices in the Brazilian market and identify when these explosions occurred. The approach consists of using a new methodology based on recursive unit root tests, which identifies the beginning and ending dates of price bubbles. For empirical tests were used market indexes (Bovespa adjusted for dollar and dividend yield) and IGP-DI price series (monthly inflation rate and accumulated 12 months inflation rate), which show evidences of explosive behavior over time. The results show the existence of explosive behavior for the Bovespa index (adjusted for dollar) in 1997, 2006 and 2008 (the period prior to the bankruptcy of Lehman Brothers) and for the IGP-DI inflation rate (accumulated 12 months) in the 80's and 90's, prior to Plano Real. / O objetivo deste trabalho é determinar a existência de comportamento explosivo em preços no mercado brasileiro e identificar quando essas explosões ocorreram. Para tanto, foi utilizada uma nova metodologia recursiva de testes de raiz unitária, que identifica início e fim de explosões de preços em tempo real. Foram escolhidos os índices de mercado (Bovespa ajustado pelo dólar e pelo dividend yield do mercado) e a série de preços IGP-DI (taxa de inflação mensal e acumulada em 12 meses) por apresentarem evidências de comportamento explosivo ao longo do tempo. Os resultados obtidos apontaram a existência de comportamentos explosivos nas séries do Ibovespa ajustado pelo dólar nos anos de 1997, 2006 e 2008 (período anterior à quebra do Banco Lehman Brothers) e na taxa de inflação acumulada em 12 meses nas décadas de 80 e 90, previamente ao Plano Real.

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