The S&P 500 experienced a 6.3% gain in May, its best performance since 1990, driven by positive court rulings regarding tariffs and healthy corporate profit outlooks. Despite historical adages suggesting summer underperformance, the S&P 500 has averaged nearly 7% gains during June-August since 2020; however, potential headwinds include the upcoming tariff deal deadline between the U.S. and Eurozone. The article suggests investors focus on personalized, goals-based strategies rather than attempting to time the market based on seasonal trends.
The S&P 500 demonstrated significant strength in May 2025, posting a 6.3% gain, which represents its best May return since 1990 and its strongest monthly performance since November 2023. This upward movement, which defied the traditional 'sell in May and go away' adage, was reportedly driven by positive investor sentiment stemming from a court ruling that could lead to a reduction or rescission of U.S. tariffs, alongside quarterly earnings results reinforcing a healthy outlook for corporate profit growth. While historical data since 2020 indicates strong summer performance for the S&P 500, with an average return close to 7% from June through August, caution is warranted. The article highlights potential risks, including the possibility that some assets may have rallied too quickly and the upcoming deadline for a U.S.-Eurozone tariff deal, which could introduce market volatility. Consequently, the recommended approach is to eschew market timing rules of thumb in favor of establishing personalized, goals-based investment strategies focused on long-term objectives and effective risk management.
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