The surge in artificial intelligence continues to propel technology stocks, with NVIDIA Corporation's (NVDA.US) market capitalization now exceeding that of the entire S&P 500 Healthcare sector. This milestone underscores the technology industry's unprecedented dominance in the U.S. stock market. On Monday, NVIDIA's stock closed up 1.97% at $219.44, reaching a new all-time high during the session. The company's total market value is approximately $5.4 trillion, making it not only the largest in the U.S. market but also the world's most valuable publicly traded company. In contrast, the S&P 500 Healthcare sector, comprising about 59 companies, has a total market capitalization of roughly $5.2 trillion. This represents only about 8% of the S&P 500 index, a record low weighting. The largest company in the healthcare sector is Eli Lilly and Company (LLY.US), with a market cap of around $900 billion. Meanwhile, the technology sector's market value has surpassed $23 trillion, achieving a 37% weighting in the S&P 500, also a historic high. When including major companies like Amazon.com, Inc. (AMZN.US), Alphabet Inc. (GOOG.US, GOOGL.US), and Meta Platforms, Inc. (META.US)—which are widely regarded as technology firms but classified in other S&P sectors—the combined weight of "tech-related sectors" in the index approaches 50%. Alphabet and Meta are categorized under Communication Services, while Amazon is part of Consumer Discretionary. However, a significant portion of Amazon's valuation is attributed to its cloud computing business, AWS. The technology sector overall remains strong. The Technology Select Sector SPDR Fund (SLK.US), which tracks the S&P 500 tech sector, rose 1.34% on Monday, also hitting a record intraday high. The ETF has gained 24% year-to-date, significantly outperforming the S&P 500 index, which is up about 9% over the same period. In comparison, the healthcare sector has been weak. The Health Care Select Sector SPDR Fund (XLV.US), which tracks the healthcare sector, has declined 7% year-to-date, largely due to significant drops in component stocks like Abbott Laboratories (ABT.US) and Intuitive Surgical, Inc. (ISRG.US). The performance and valuation gap between the technology and healthcare sectors is now near historically extreme levels. This has prompted some Wall Street investors to revisit the topic of sector rotation. With numerous technology stocks trading near or at record highs, the market is beginning to consider whether it is time to gradually shift from the high-valuation tech sector to the previously overlooked healthcare sector.
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