&gt; Are there any currencies maintaining their relationship with the US dollar?<p>Over what time period?  The Pound&#x2F;Dollar pair is pretty stable historically.  With the exception of recent intentional corrections the USD&#x2F;CHF pair is usually stable (though I&#x27;m glad I was out of trading on that one particular day).<p>Lots of currencies have the problem that they act as proxies for the natural resources of the country in question.  So they vary with high correlation with commodities prices (see CAD&#x2F;AUD).  In many ways the USD is the opposite of that, so it&#x27;s not that surprising that lots of currencies fluctuate wildly around USD.