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This paper presents new results on the identification of heteroskedastic structural vector autoregressive (HSVAR) models. Point identification of HSVAR models fails when some shifts in the variances of the structural shocks are suspected to be statistically indistinguishable from each other....
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actors. In this paper, we formulate a new theory able to describe "hedging needs" as well as the role of speculators in the … the sample February 2000 November 2014, using WTI and CFTC data. Our theory is well supported by econometric evidence. In …
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