Dollar Index Closes Fourth Straight Winning Week on Rate Expectations
The greenback's broader run reflects tighter US policy expectations, though Friday's moves were uneven across currency pairs.
The Wall Street Journal reported October 9 that its dollar index registered a fourth consecutive weekly advance, the longest such streak since May 2025. Expectations for higher Federal Reserve interest rates and fragile bond markets supported the US currency, even as oil-price relief temporarily reduced demand for the dollar.
A dollar index combines several exchange rates and cannot describe every bilateral pair. USD/CAD, for example, reacted to a much weaker Canadian employment report, while the euro faced separate concerns around French government borrowing. The yen can respond to Bank of Japan policy and intervention expectations.
Interest-rate differentials matter because they change the relative returns on cash and bonds, but exchange rates also move with perceived safety, trade flows and external financing needs. Rising yields do not mechanically strengthen a currency when fiscal credibility becomes a concern.
The next drivers include official US inflation statistics, central-bank communication and global energy developments. The weekly streak is a backward-looking observation, not proof that the dollar will rise again in the next session.
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