On April 17, 2026, traders were active on the floor of the New York Stock Exchange. The old market saying "Sell in May and go away?" is being questioned by some analysts, who suggest a wait-and-see approach might be preferable this year. This well-known stock market adage stems from a seasonal pattern: the period from May to October has historically been the weakest six months for U.S. stock returns. As traders take summer vacations, market liquidity often decreases and volatility increases, raising the risk of significant market pullbacks. However, this classic rule may not hold true for the current year. Jeffrey Hirsch, Editor of the Stock Trader's Almanac, stated, "This year, we might want to reconsider the 'sell in May' strategy. It could be better to stay invested and monitor how the market develops." Several positive factors currently support further stock market gains. Despite ongoing turmoil in the Middle East, both the S&P 500 and the Nasdaq Composite indices have reached new all-time highs, highlighting the resilience of U.S. equities and improving market breadth. Technical indicators also remain favorable. Hirsch points to the MACD indicator, which analyzes the relationship between 12-period and 26-period exponential moving averages to identify market momentum and potential buy/sell signals. Current readings suggest the upward trend retains its strength. Nevertheless, warning signs persist, particularly concerning the macroeconomic outlook. The latest GDP forecast from the Atlanta Fed projects first-quarter GDP growth at only 1.2%, significantly lower than previous estimates exceeding 3%. Furthermore, the potential negative impacts of artificial intelligence on the labor market have not yet been fully priced in by investors. Ultimately, the key variable determining the future direction of U.S. stocks is the outcome of the U.S.-Iran conflict. If the Strait of Hormuz reopens for navigation and a long-term peace agreement is reached, investor confidence would likely receive a substantial boost, alleviating concerns about rising prices and economic weakness. A CNBC survey indicates that with national average gasoline prices surpassing $4 per gallon, American consumers have already begun to cut back on spending. Hirsch analyzed, "If a lasting solution to the U.S.-Iran situation emerges, the stock market will likely continue its upward trajectory from May through October. Conversely, if the conflict persists and is accompanied by a bearish MACD crossover signal, it would be prudent to reduce equity exposure and tighten risk management."

Portfolio Rebalancing While historical data confirms that U.S. stocks have generally performed poorly from May to October, with performance often worse during midterm election years, some experts anticipate a deviation this year. CFRA analyst Sam Stovall's data, tracking performance since 1945, shows the S&P 500 has averaged a gain of just 2% from May to October, compared to a 7% average gain from November to April. During midterm election years, the index has averaged a decline of 1.2% in the May-October period. Hirsch is not the only professional forecasting a contrary move this year. Bank of America Securities' chief market technician, Paul Ciana, after reviewing trends across 6-month, 3-month, and 1-month cycles, suggests that the traditional "Sell in May" pattern will be broken. He proposes a strategy of buying in May and selling during July or August to avoid potential weakness in the August-October period. Hirsch is currently adjusting his portfolio allocation, increasing exposure to short-term cash equivalents and bond instruments. His key holdings include the iShares 0-3 Month Treasury Bond ETF (SGOV), the iShares Short Treasury Bond ETF (SHV), and the iShares Core U.S. Aggregate Bond ETF (AGG). He also maintains a positive outlook on the utilities sector. He concluded, "The strategy isn't about moving entirely to cash, but rather optimizing and rebalancing the portfolio structure for current conditions."