Market quality and structural changes in the trading system: The case of X-Stream on the Colombian stock exchange.

We study the effect of X-Stream, the new trading platform of the Colombian Stock Exchange since February 2009, on the quality of the stock market. Contributing to the literature on market quality, this paper provides novel evidence of the effect of reforms on market design, trading rules and operati...

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Autores:
Agudelo, Diego A.
Gutiérrez, Ángelo
Múnera, Nazly J.
Tipo de recurso:
Fecha de publicación:
2014
Institución:
Universidad EAFIT
Repositorio:
Repositorio EAFIT
Idioma:
eng
OAI Identifier:
oai:repository.eafit.edu.co:10784/8019
Acceso en línea:
http://hdl.handle.net/10784/8019
Palabra clave:
Liquidity
Volatility
Market microstructure
Market quality
Trading activity
Trading systems
Rights
License
Acceso abierto
Description
Summary:We study the effect of X-Stream, the new trading platform of the Colombian Stock Exchange since February 2009, on the quality of the stock market. Contributing to the literature on market quality, this paper provides novel evidence of the effect of reforms on market design, trading rules and operational capabilities on a small and low liquidity emerging stock market. Starting from a proprietary database of transactional and order data from BVC, we use several econometric models to measure the effect of the new platform on daily and intraday volatility, liquidity (proportional bid-ask spread and price impact), and trading activity. The evidence suggests that X-Stream improved the liquidity and reduced the volatility of the overall market, especially of the most liquid stocks. These results support the investment on more sophisticated trading systems in Emerging Markets.