--- title: "U.S. stock night trading fluctuations: Nvidia increases holdings and JP Morgan is optimistic, Coherent Corp. falls 3.73% in night trading, attracting market attention" type: "News" locale: "en" url: "https://longbridge.com/en/news/286842826.md" description: "Coherent Corp. fell 3.73% in after-hours trading; Corning fell 1.99% with a trading volume of $3.29 million; Lightwave Logic rose 0.43% with a trading volume of $96,000; Amphenol rose 0.16% with a trading volume of $65,400" datetime: "2026-05-19T02:16:32.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/286842826.md) - [en](https://longbridge.com/en/news/286842826.md) - [zh-HK](https://longbridge.com/zh-HK/news/286842826.md) --- # U.S. stock night trading fluctuations: Nvidia increases holdings and JP Morgan is optimistic, Coherent Corp. falls 3.73% in night trading, attracting market attention **U.S. Stock Night Market Movements** Coherent Corp. fell 3.73% in the night market. Based on recent key news: 1. On May 17, NVIDIA added a position in Coherent Corp. to its proprietary investment portfolio, increasing its holdings by 7.8 million shares. This move reflects NVIDIA's strategy to support the AI ecosystem, driving fluctuations in Coherent's stock price. 2. On May 18, JP Morgan analysts raised their growth expectations for the data communication market, believing that strong demand for optical communication devices is favorable for Coherent. However, the market remains cautious about the actual short-term impact. 3. On May 18, JP Morgan gave Coherent an overweight rating with a target price of $380, showing market confidence in its long-term growth potential, but the stock price is still affected by market volatility in the short term. The upward revision of growth expectations in the optical communication market is a positive for the industry. **Stocks with High Trading Volume in the Industry** Corning fell 1.99% in the night market. Based on recent key news: 1. On May 18, Corning's stock price surged significantly after forming a partnership with NVIDIA. This collaboration has enhanced market confidence in Corning's position in the optical communication field, driving the stock price up. 2. On May 15, Corning COO Avery H. Nelson sold 20,000 shares of common stock, reducing his direct holdings to 70,059 shares. This move may raise market concerns about internal confidence in the company, leading to stock price fluctuations. 3. On May 16, Corning executives will provide a business update at the J.P. Morgan Global Technology Conference. Market expectations may influence stock price trends, and investors are focused on the company's future strategy. The demand for optical communication technology is growing, and the industry outlook is optimistic. Lightwave Logic rose 0.43% in the night market. There has been no significant news recently; trading is active, and capital flows are evident. Considering the sector and industry trends, the stock shows notable volatility, and specific reasons need further observation. no\_news Amphenol rose 0.16% in the night market. Based on recent news: 1. On May 17, analysts believe that increased demand in the energy and military/aerospace sectors may drive Amphenol's performance growth. Analysts pointed out that with rising oil prices and increased aerospace demand, the demand for Amphenol's products may further increase, pushing the stock price up. 2. On May 17, a MarketBeat report indicated that although Amphenol received a "moderate buy" rating, top analysts recommended five other stocks as better investment choices. This news may have a somewhat negative impact on Amphenol's stock price, but overall it still maintains an upward trend. 3. On May 17, MarketBeat's instant news alert indicated that Amphenol's stock failed to make it onto the top five stocks recommended by top analysts. This may lead some investors to reassess their investment strategies, but Amphenol's stock price still rose slightly. Increased demand in energy and aerospace drives the stock price up ### Related Stocks - [COHR.US](https://longbridge.com/en/quote/COHR.US.md) - [GLW.US](https://longbridge.com/en/quote/GLW.US.md) - [LWLG.US](https://longbridge.com/en/quote/LWLG.US.md) - [APH.US](https://longbridge.com/en/quote/APH.US.md) ## Related News & Research - [Here's How Much $100 Invested In Coherent 20 Years Ago Would Be Worth Today](https://longbridge.com/en/news/286180090.md) - [Coherent Stock: Is Wall Street Bullish or Bearish?](https://longbridge.com/en/news/286853677.md) - [Nvidia Discloses Stakes in AI Stocks CoreWeave (CRWV) and Coherent (COHR)](https://longbridge.com/en/news/286630278.md) - [Coherent Corp. Rocked by Major Insider Stock Move From Company Director](https://longbridge.com/en/news/286343834.md) - [TGT Stock Alert: What to Know as Target Taps Former Walmart Exec](https://longbridge.com/en/news/286957668.md)