--- title: "U.S. stock market midday update: Atlantic's stock price rises 10.07%, trading volume increases, market sentiment is high but caution is needed for volatility risks" type: "News" locale: "en" url: "https://longbridge.com/en/news/284924973.md" description: "Atlantic rose 10.07%; Danaher fell 2.25%, with a transaction volume of USD 307 million; Thermo Fisher Scientific fell 1.89%, with a transaction volume of USD 298 million; Tempus AI rose 0.16%, with a transaction volume of USD 168 million; Agilent Technologies fell 1.02%, with a market value of USD 32.3 billion" datetime: "2026-05-01T17:22:39.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/284924973.md) - [en](https://longbridge.com/en/news/284924973.md) - [zh-HK](https://longbridge.com/zh-HK/news/284924973.md) --- # U.S. stock market midday update: Atlantic's stock price rises 10.07%, trading volume increases, market sentiment is high but caution is needed for volatility risks **U.S. Stock Market Midday Update** Atlantic, up 10.07%, with increased trading volume and no significant news recently. Trading is active, with clear capital flows. Considering sector and industry trends, the stock shows significant volatility, and the specific reasons need further observation. **Stocks Ranked High in Industry Trading Volume** Danaher down 2.25%. Based on recent news, 1. On April 30, Danaher's technical signals indicated a sell, and its valuation is high. Danaher has a high price-to-earnings ratio and low yield, with technical indicators showing its stock price below key long-term moving averages, and MACD is negative, leading to a bearish sentiment among investors. 2. On April 29, Danaher failed to make the list of the top five stocks recommended by analysts. Although Danaher currently has a moderate buy rating among analysts, top analysts believe there are five stocks that are more worthy of investment, which undermines market confidence in Danaher. 3. On April 29, Danaher's financial report showed frequent capital market activities. Danaher frequently uses the capital market for strategic acquisitions to maintain its competitive position in high-growth areas, which may raise concerns among investors about its financial stability. Industry technical signals are weak, and valuations are high. Thermo Fisher Scientific down 1.89%. Based on recent key news: 1. On April 30, Thermo Fisher Scientific holds significant weight in multiple ETFs, and capital flows may lead to automatic buying and selling. According to data from Benzinga, Thermo Fisher Scientific has significant weight in multiple ETFs, and any significant inflow or outflow of capital may lead to automatic buying and selling of the stock, affecting its price. 2. On April 29, the President and COO of Thermo Fisher Scientific sold 400 shares of common stock. According to disclosures from the EDGAR system, Gianluca Pettiti, President and COO of Thermo Fisher Scientific, sold 400 shares of common stock on April 27, which may impact market confidence. 3. On May 1, the operational productivity improvements at Thermo Fisher Scientific offset investment pressures. According to SEC filings, Thermo Fisher Scientific's operational productivity improvements through the PPI program helped offset investment pressures, supporting stable profit margins. The healthcare sector shows weak demand, with significant capital flows. Tempus AI up 0.16%. Based on recent key news: 1. On April 29, Tempus AI announced it will hold an Investor Day event on May 29. This news may attract market attention to the company's future strategies and development directions, driving the stock price up. Source: Business Wire 2. On April 29, analysts rated Tempus AI as "moderate buy," but it was not included in the top recommended stocks list. This indicates a cautious market attitude towards its short-term performance, which may limit further increases in the stock price. Source: MarketBeat On April 30th, Tempus AI submitted the latest documents to the SEC, showing the company's transparency in compliance and information disclosure, which may enhance investor confidence. Source: Public Technologies The AI industry is growing rapidly, with high market attention. **Stocks ranked among the top in industry market capitalization** Agilent Technologies fell by 1.02%. There has been no significant news recently; trading is active, and capital flow is evident. Considering the sector and industry trends, the stock shows significant volatility, and the specific reasons need further observation. no\_news ### Related Stocks - [ATLN.US](https://longbridge.com/en/quote/ATLN.US.md) - [DHR.US](https://longbridge.com/en/quote/DHR.US.md) - [TMO.US](https://longbridge.com/en/quote/TMO.US.md) - [TEM.US](https://longbridge.com/en/quote/TEM.US.md) - [A.US](https://longbridge.com/en/quote/A.US.md) ## Related News & Research - [Cranium AI Acquires Aiceberg to Strengthen its End-to-End AI Security, Governance and Agentic AI Platform](https://longbridge.com/en/news/287239841.md) - [WHITE HOUSE POSTPONES AI EO SIGNING CEREMONY: AXIOS](https://longbridge.com/en/news/287246865.md) - [Neurovia AI CTO at ISNR: Solving the AI Data Cost Dilemma and Unleashing Infrastructure Capacity | AIIO Stock News](https://longbridge.com/en/news/287049307.md) - [How Beaten-Down Tempus AI Stock Offers a Lottery Ticket for Traders Here](https://longbridge.com/en/news/286786866.md) - [AI video is moving beyond clip slop](https://longbridge.com/en/news/287247597.md)