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| Author(s): |
Luiz Fernando Castelli
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Economia, Administração e Contabilidade (FEA/SBD) |
| Defense date: | 2014-07-11 |
| Examining board members: |
Bruno Cara Giovannetti;
Rodrigo de Losso da Silveira Bueno;
Guilherme Batistella Martins
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| Advisor: | Bruno Cara Giovannetti |
| Abstract | |
The work seeks to answer: i) if the margin requirement is able to affect asset prices in periods of illiquidity, ii) how the margins are fixed. The first question is related to the Margin CAPM model of Gârleanu & Pedersen (2011), which indicate the existence of the relationship between the margin requirements associate to funding problems with the asset prices. The second question is related to the work of Brunnermeier & Pedersen (2009) that describe the Spiral Liquidity phenomenon related to a pro-cyclical behavior of margins, which would be a function of the volatility of asset prices. We used data from Brazilian stock markets and margin requirements disclosure by BM&F Bovespa for the period that goes on jan/2008 to dec/2012 to answer these questions. The empirical evidence found in the work indicates that the margin requirement affects the assets prices in illiquid times, as described by the Margin CAPM. However, this phenomenon is restricted to small caps stocks. According to the exercise performed, the Long Short portfolio of small caps, where the strategy is long in high margin requirement assets and short in low margin requirement assets, presented an average risk-adjusted return of 1.33% per month. While for medium and large companies the risk-adjusted return of Long Short strategy is statistically equal to zero. Furthermore, it was found in an exercise in panel that an increase of 1 p.p. in the margin requirement generates an approximate 0.13 p.p. fall on the excess return of assets of small caps when the market is illiquid. On the other hand, the positive effect is 0.10 p.p. when the market is liquid. Again, the effects are null for medium and large companies. Regarding the margins, the paper presents evidence that these are related to the volatility and skewness of the distribution of the assets returns. In an exercise in panel, it was observed that: an increase of 1 p.p. in asset volatility generates an approximate 0.017 p.p. increase in variation of margin requirements; and a decrease of 0.1 unit in the skewness of asset returns causes an increase in margins variations of 0.015 p.p. It is noteworthy that these results are unprecedented in the asset pricing literature. (AU) | |
| FAPESP's process: | 12/18181-9 - Impact of Margin Requirement on Asset Pricing |
| Grantee: | Luiz Fernando Castelli |
| Support Opportunities: | Scholarships in Brazil - Master |