Wall Street has experienced remarkable gains under the Trump administration, with the Dow, S&P 500, and Nasdaq Composite surging 57%, 70%, and 142% respectively during the first term. This momentum has carried into the second term, fueled by AI innovation, record share buybacks, and strong corporate earnings. However, a long-term valuation metric suggests this bull market may be nearing a critical juncture.
The S&P 500's Shiller Price-to-Earnings (P/E) ratio, which averages inflation-adjusted earnings over ten years, recently climbed to 42.84. This marks the second-highest level in history, approaching the peak seen during the dot-com bubble. Historical data spanning over 150 years indicates that such elevated valuations often precede significant market corrections, raising concerns among analysts about potential downside risk.
While the current rally has been broad-based, the technology sector has been a primary driver. The Nasdaq Composite's 142% gain during Trump's first term underscores the outsized influence of tech giants. However, the IT sector faced headwinds this week, declining 1.3% after Accenture's weak revenue guidance raised worries about global tech spending. Infosys and TCS were among the losers, while Bharti Airtel and Bajaj Finance gained.
In India, benchmark indices Nifty and Sensex posted weekly gains of 1.65% and 1.68%, respectively, supported by lower crude oil prices and strong foreign institutional investor (FII) inflows of ₹3,386.33 crore. The BSE Sensex closed at 76,802.9, while the Nifty 50 ended at 24,013.1. Midcap and smallcap indices outperformed, rising nearly 3% and 3.2%, respectively. Market capitalization of BSE-listed companies increased by ₹15.53 lakh crore, reflecting broad-based optimism.
The Indian market also benefited from a US-Iran peace agreement, which ended months of conflict and boosted global sentiment. The Nifty India Defence index surged nearly 7%, while Trent led Nifty gainers with a 16.4% rise on strong business updates. Conversely, Tata Motors Passenger Vehicles shares fell 7.8% after a cautious FY27 profit outlook. Vedanta Ltd completed its demerger, listing four new companies on BSE and NSE.
Separately, Apple CEO Tim Cook confirmed plans to raise prices on select products to offset rising memory chip costs. Analysts at Evercore ISI suggest a possible $100 hike for the upcoming iPhone 18 Pro models, less than initial estimates of $200. Meanwhile, Take-Two Interactive announced the preorder date for Grand Theft Auto 6, stirring interest in gaming stocks. Falling oil prices also boosted airline and cruise stocks, as investors anticipate consumer spending gains.
In the space sector, SpaceX (NASDAQ: SPCX) went public in June 2024 with a valuation surpassing Tesla's, despite generating lower revenues and operating at a loss. While the company operates in a high-growth industry with few competitors, analysts caution that its valuation appears inflated relative to its financials. They advise investors to assess SpaceX on its own merits rather than expecting Tesla-like returns.
Overall, the market remains at a crossroads. While near-term catalysts such as AI innovation and corporate buybacks support the rally, historically high valuations suggest caution is warranted. Investors should monitor earnings reports and macroeconomic data for signs of a potential shift.



