--- title: "U.S. stock market midday update: Tempus AI up 8.64%! Institutions raise ratings, $1.5 billion acquisition ignites precision medicine" type: "News" locale: "en" url: "https://longbridge.com/en/news/296529471.md" description: "Tempus AI rose 8.64%; Thermo Fisher Scientific rose 2.20%, with a transaction volume of USD 1.211 billion; Danaher rose 2.87%, with a transaction volume of USD 893 million; Illumina rose 4.25%, with a transaction volume of USD 523 million; Agilent Technologies rose 0.34%, with a market value of USD 44 billion" datetime: "2026-08-20T19:43:00.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/296529471.md) - [en](https://longbridge.com/en/news/296529471.md) - [zh-HK](https://longbridge.com/zh-HK/news/296529471.md) generator: "portal-rs" --- # U.S. stock market midday update: Tempus AI up 8.64%! Institutions raise ratings, $1.5 billion acquisition ignites precision medicine **U.S. Stock Market Midday Update** Tempus AI rose 8.64%, with increased trading volume. Based on recent key news: 1. On August 21, BTIG raised Tempus AI's target price to $80, maintaining a buy rating. Institutions such as Piper Sandler and Guggenheim also adjusted their ratings and target prices, driving the stock price up. Source: Benzinga 2. On August 20, Merck and Moderna's mRNA melanoma vaccine Phase III clinical trial results were positive, enhancing market sentiment for AI precision medicine concepts, which boosted Tempus's stock price. Source: Zhitong Finance 3. On August 20, Tempus announced the acquisition of Personalis for $1.5 billion, the latter providing gene sequencing technology for Moderna. The acquisition strategy was viewed positively by the market, benefiting the stock price. Source: Wall Street Insight. The biotechnology sector rose due to favorable news regarding mRNA vaccines. **Stocks with High Trading Volume in the Industry** Thermo Fisher Scientific rose 2.20%. Based on recent key news: 1. On August 19, Shanghai Mayor Gong Zheng met with Thermo Fisher Scientific's Chairman and CEO to discuss deepening cooperation and investment layout. This move enhanced market confidence in the company's development in China, driving the stock price up. 2. On August 18, Thermo Fisher announced the appointment of a new President for the China region, ensuring a smooth business transition. This personnel change was seen by the market as a positive signal for the company's stable development in China, further boosting the stock price. 3. On August 17, the Vice Minister of Commerce met with Thermo Fisher's Global President to discuss Sino-U.S. economic and trade relations and the company's development in China. This indicated that the company's business in China is receiving high-level attention, enhancing investor confidence and driving the stock price up. The biopharmaceutical industry has performed strongly recently, with clear policy support. Danaher rose 2.87%. Based on recent news: 1. On August 20, Danaher released its latest financial report, showing that its R&D efficiency and capital allocation were underperforming compared to major competitor Thermo Fisher Scientific, leading institutional investors to turn to peers with clearer growth drivers. This news raised market concerns about Danaher's future growth potential, driving the stock price up. 2. On August 20, analysts maintained a "moderate buy" rating on Danaher but noted that five other stocks were considered better investment choices. This rating reflects the market's cautious attitude towards Danaher but did not prevent the stock price from rising. 3. On August 20, Danaher published original content via Business Wire, further strengthening market attention on its financial status, which drove the stock price up. The market expressed concerns about Danaher's future growth potential. Illumina rose 4.25%. Based on recent key news: 1. On August 17, Illumina announced the issuance of $300 million in 4.950% notes, intended to repay 4.650% notes maturing in 2026. This move enhances the company's financial flexibility, boosts market confidence, and drives up the stock price. 2. No other significant news recently. 3. No other significant news recently. The industry is affected by macro tightening and requires caution. **Stocks ranked at the top of the industry by market capitalization** Agilent Technologies rose 0.34%. Based on recent key news: 1. On August 19, the YieldMax Magnificent 7 Fund of Option Income ETF systematically collects option premiums from large tech stocks to meet the income needs of its portfolio. This strategy may lead to increased demand for tech stocks in the market, thereby driving up Agilent Technologies' stock price. 2. On August 19, the highly watched Treasury bond ETF directly tracks 12 months of U.S. sovereign debt, providing a frictionless channel for capital seeking short-term yield curves. This may lead to inflows into tech stocks, further driving up Agilent Technologies' stock price. 3. No other significant news recently. 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