https://www.fidelity.com/learning-cente ... ong-dollar
"Is a strong dollar bad?
The most obvious risk a strong dollar poses is the way it can hurt the US stocks that many people rely on as mainstays of their retirement accounts. The US-based companies that make up the S&P 500 earn nearly 40% of their revenues outside the US. As Fidelity Director of Global Macro Jurrien Timmer explains, "When the dollar rises against, say, the euro, as it has done in the last year, then a company's euro-denominated sales are worth less once they're exchanged into dollars." That means a rising dollar is likely to have a noticeable impact on these companies' revenues, earnings, and stock prices.
Besides hurting earnings, a super-strong dollar can also hurt prices of US stocks and bonds by making them more expensive for big non-US institutional investors. Faced with higher prices, they may opt to invest their money elsewhere, dragging US markets downward in the process.
Or is a strong dollar good?
While a strong dollar may hurt US stocks, it also makes international stocks a bargain for US investors who want to diversify their portfolios. Historically, international stocks have outperformed US stocks and they also have tended not to rise or fall in lockstep with US markets. Over time, diversifying with non-US stocks may reduce risk in an investor's portfolio. The strong dollar may also help the stocks of non-US companies who operate in currencies such as the yen or euro but who export their products to the US.
However, Fidelity Director of Quantitative Market Strategy Denise Chisholm warns against making major changes to your investments based on fluctuations in foreign exchange rates. "The strength of the dollar hasn't historically been much of a predictor of how stock sectors will perform. If you bought or sold sectors based on the typical historical outcomes when the dollar has appreciated by 10% or more in a year, which is the situation we're in, you'd have made the wrong move for 7 of the 11 sectors," she says.
A strong dollar makes imported goods cheaper for US consumers. That may help cushion some of the impact of high inflation in the US, but much of the food and energy whose price increases are hitting households the hardest are produced in the US rather than imported, and continuing supply chain tangles are still likely to influence the prices of foreign-made goods at least as much currency values are.
Cheaper imports also create other problems for the US by increasing the country's trade deficit. The US already imports nearly $1 trillion more in goods and services than it exports each year, almost 5% of the country's gross domestic product (GDP), at a time when total US debt is already well over 100% of GDP. Fidelity's Asset Allocation Research Team says that high levels of public and private debt are likely to mean returns from stock and bond investments may be lower in the decades ahead than they have been historically."
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