[UBS: S&P 500 P/E Ratio Drops 17%, Fed Path Determines Market Outlook] Deep Tide TechFlow reports, according to Tide Research, UBS's September 28, 2026 research note indicates that the forward price-to-earnings (P/E) ratio of the S&P 500 has dropped 17% from its peak last November. The yield on the 10-year U.S. Treasury has risen approximately 100 basis points this year to 5.2%, about 80 basis points above the one-year moving average. Over the past 40 years, the yield on the 10-year U.S. Treasury has only exceeded 1.5 standard deviations seven times. The current market pricing suggests the Federal Reserve will raise interest rates by approximately 88 basis points over the next year, close to but below the 100-basis-point threshold. UBS believes the Fed's rate hike path will determine the direction of the stock market. Historical data shows that if rate hikes exceed 100 basis points within a year, the S&P 500 tends to deliver negative returns a year later; if rate hikes are moderate, the index averages a 17.7% gain a year later. Current pricing aligns more closely with the moderate rate hike scenario. Valuation models suggest the S&P 500 has approximately 21% implied upside potential. In terms of allocation, UBS recommends focusing on high-growth, undervalued sectors such as semiconductors, pharmaceuticals, refining, and diversified banking.