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Evidence on News Shocks under Information Deficiency

Jaakko Nelimarkka

MPRA Paper from University Library of Munich, Germany

Abstract: News shocks about future productivity can be correctly inferred from a conventional VAR model only if information contained in observables is rich enough. This paper examines news shocks by means of a noncausal VAR model that recovers economic shocks from both past and future variation. As noncausality is implied by nonfundamentalness, the model solves the problem of insufficient information per se. By the impulse responses derived from the model, variables react to the anticipated structural shocks, which are identified by exploiting future dependence of investment with respect to productivity. In the U.S. economy, news about improving total factor productivity moves investment and stock prices on impact, but these responses are likely affected by a parallel increase in productivity. The news shock gradually diffuses to productivity and generates smooth reactions of forward-looking variables.

Keywords: News shocks; Structural VAR analysis; Nonfundamentalness; Noncausal VAR (search for similar items in EconPapers)
JEL-codes: C18 C32 C53 E32 (search for similar items in EconPapers)
Date: 2017-08-10
New Economics Papers: this item is included in nep-ecm and nep-mac
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