U.S. Stocks Are Now Pricier Than They Were in the Dot-Com Era
1. S&P 500 hits record highs but shows expensive valuation metrics. 2. Top 10 companies now comprise 39.5% of the index's value. 3. Concerns grow over market concentration in expensive tech stocks. 4. Some investors are shifting focus to undervalued firms. 5. Valuations may be difficult for major companies to maintain.