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Autor:innen: 
Erscheinungsjahr: 
2019
Schriftenreihe/Nr.: 
Chemnitz Economic Papers No. 030
Verlag: 
Chemnitz University of Technology, Faculty of Economics and Business Administration, Chemnitz
Zusammenfassung: 
The dynamics between trading volume and volatility for seven agricultural futures markets are examined by drawing on the large literature for equity markets and by allowing for heterogeneity of investors beliefs proxied by open interest. In addition, time-varying effects on the transmission mechanism of shocks are also accounted for by implementing a Bayesian VAR model, which allows for time-variation stemming from both the coefficients and the variance covariance structure of the model's disturbances. This is important since it accounts for changes in the number of trades and the size of trades across different periods, which can have different effects on the volatility-volume relation. The results show that the Granger causality and the reaction to shocks varies substantially over time. This highlights the importance to allow for time-variation when modeling the relationship between volatility, trading volume and open interest for agricultural futures markets. In general, the findings indicate that volatility of agricultural futures markets is driven by previous period's trading volume and open interest. However, the reversed relationship from lagged volatility to trading volume and open interest is limited to certain periods of time.
Schlagwörter: 
Agricultural futures markets
open interest
time-varying Bayesian VAR
trading volume
volatility
JEL: 
C32
G13
Q14
Dokumentart: 
Working Paper

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