Structure and evolution of the foreign exchange networks

Details Structure and evolution of the foreign exchange networks Structure and evolution of the foreign exchange networks

2009-01-29

arxiv.org/abs/0901.4793v1

Acta Phys. Pol. B 40, 175-194 (2009)

Economy

Quantitative Finance

Statistical Finance

Scientific paper

We investigate topology and temporal evolution of the foreign currency exchange market viewed from a weighted network perspective. Based on exchange rates for a set of 46 currencies (including precious metals), we construct different representations of the FX network depending on a choice of the base currency. Our results show that the network structure is not stable in time, but there are main clusters of currencies, which persist for a long period of time despite the fact that their size and content are variable. We find a long-term trend in the network's evolution which affects the USD and EUR nodes. In all the network representations, the USD node gradually loses its centrality, while, on contrary, the EUR node has become slightly more central than it used to be in its early years. Despite this directional trend, the overall evolution of the network is noisy.

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