Dollar bulls have history on their side going into September as the currency has strengthened during that month for six years in a row.
Not only has the Bloomberg dollar index risen every September since 2017, but its average gain of 1.2% in that month also beats the performance of any other month over the same period. Strategists say reasons include quarter-end buying and a general increase in haven demand ahead of October, which is notorious for stock-market declines.