A weaker dollar will continue to support a broad stock market rally that has already seen an extraordinary run-up this year. Since topping out in late last September, the ICE U.S. Dollar Index has fallen about 13%. A weaker dollar "starts to set into motion a few different dynamics," said Yung-Yu Ma, chief investment officer at BMO Wealth Management. .DXY 1Y mountain ICE U.S. Dollar Index over past year A weaker dollar typically lifts large-cap stocks that are more likely to have an international footprint. What's more, emerging market companies more easily pay back dollar-denominated debt when the greenback is weaker.

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Persons: it's, Yung, Yu Ma, Shannon Saccocia, Riley Financial's Art Hogan, Hogan, Neuberger Berman's Saccocia, Saccocia, We've Organizations: ICE, BMO Wealth Management, Federal Reserve, Bank of Canada, Bank of England, European Central Bank, Vanguard FTSE Emerging