UBS’s Chief Equity Strategist has lowered its outlook for U.S. stocks, citing risks related to a weakening dollar, overvalued stock markets, and increasing uncertainty due to policy turmoil in Washington.
Andrew Garthwaite, the Global Head of Equity Strategy at UBS, downgraded the rating of U.S. stocks in global equity portfolios to “Benchmark.” He believes that the factors that have driven U.S. stocks to outperform global markets in recent years are gradually fading.

Garthwaite points out that the risk associated with the dollar is the core concern. According to UBS’s forecast, the euro-to-dollar exchange rate will rise to 1.22 by the end of the first quarter and the dollar is facing “structural, asymmetric downside risks.”
Historical data shows that when the trade-weighted dollar index drops by 10%, U.S. stocks, on average, underperform global equities by about 4% if not hedged. This year, with the dollar weakening and foreign markets offering cheaper valuations, funds have been flowing out of the U.S., leading non-U.S. equities to significantly outperform.
So far this year, the MSCI World Index (excluding the U.S.) has risen about 8%, the Nikkei 225 Index has surged 17%, and the Stoxx Europe 600 Index has gained 7%. Meanwhile, the S&P 500 Index has remained flat, highlighting the clear rotation of funds away from U.S. stocks.
At the same time, investor concerns about the potential risks of the artificial intelligence investment boom, along with continued inflationary pressure in the U.S., have put further pressure on U.S. stocks.
UBS also pointed out that one of the key factors supporting U.S. stocks—share buybacks—is losing its strength. Currently, the buyback yield in the U.S. is roughly in line with global peers, weakening its support for earnings per share growth and capital inflows.
The bank stated that the combined “shareholder return yield” of dividends and buybacks in the U.S. is now only about half of Europe’s. Garthwaite wrote: “Buyback yields are no longer exceptional. They were once an important driver of fund flows, EPS growth, and market capitalization growth.”
Valuations being too high have exacerbated this unease. UBS calculates that the price-to-earnings ratio of U.S. stocks, adjusted by sector, is 35% higher than that of international peers, while the average premium since 2010 was only about 4%. Approximately 60% of industries are not only valued higher than global benchmarks, but also above their own historical premium levels.
UBS also noted that policy volatility under the Trump administration poses additional headwinds. This year alone, the U.S. has seen frequent changes in policies related to tariffs, credit card interest rate caps, restrictions on private equity investments in the housing market, reevaluation of drug pricing, and proposed limits on defense sector dividends and buybacks.
However, the strategist is not entirely bearish. Garthwaite emphasized that when markets are in the early stages of a potential bubble, the U.S. economy and stock market often benefit more than other markets.
Furthermore, UBS expects the advancement of artificial intelligence applications in the U.S. to outpace most other major regions, supporting earnings growth in key industries. UBS strategist Sean Simonds set a year-end target of 7500 points for the S&P 500 Index.
