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Dollar’s centrality in FX markets makes it more volatile – study

Greenback’s use as ‘vehicle currency’ makes it more sensitive to external shocks, economists say

FX correlation

The centrality of the US currency in foreign exchange markets transmits volatility from non-dollar markets to the greenback, a new paper argues.

Swiss National Bank economists Cara Bordier, Lukas Frei and Simon Stalder use high-frequency trading data to show that the dollar’s involvement in 88% of transactions in the global FX market is partly explained by the greenback’s use as a “vehicle currency”: when a trader wants to buy euros for yen, they will leverage the better liquidity conditions of

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