This article compares the direct regulation of hedge funds in the U.S. prior to the Dodd-Frank Act with the direct regulatory measures to address potential systemic risks of hedge funds ensued in its aftermaths. The direct regulation involves regulatory measures focusing immediately on the...

We propose several connectedness measures built from pieces of variance decompositions, and we argue that they provide natural and insightful measures of connectedness among financial asset returns and volatilities. We also show that variance decompositions define weighted, directed networks, so...