U.S. stock market midday update: Applied Optoelectronics up 17.32%, data center revenue doubled, strong performance against the trend

U.S. Stock Market Midday Update

Applied Optoelectronics Inc. rose 17.32%. Based on recent key news:

1. On July 28, Applied Optoelectronics Inc. CEO Morris Young completed a $632.5 million capital raise to expand Tongmei's InP production capacity and warned that "capacity will become a key driver." This news boosted market confidence and drove the stock price up.

2. On July 28, Applied Optoelectronics Inc. reported first-quarter data center revenue of $81.4 million, more than doubling year-over-year. This demonstrates the company's strong growth in the data center business, further driving the stock price up.

3. On July 28, despite significant stock price declines in peer companies such as LITE, COHR, AXTI, and AAOI over the past month, Applied Optoelectronics Inc. rose against the trend, indicating market optimism about its future prospects.

Top Stocks by Industry Trading Volume

Lumentum Holdings rose 13.70%. Based on recent key news:

1. On July 30, Lumentum signed a long-term supply agreement with AXT to secure indium phosphide wafer supply through 2031. Lumentum paid a $87 million advance to lock in supply, reducing future supply-demand tension risks and driving the stock price up.

2. On July 28, Lumentum's quarterly revenue grew 90% year-over-year to $808.4 million, showing strong market demand and company growth potential, further boosting investor confidence.

3. On July 28, Lumentum joined the Nasdaq 100 Index, increasing market attention and investor interest, propelling the stock price upward. The demand in the optical communication industry is strong, driven by AI data center expansions.

Cisco rose 0.79%, with increased trading volume. Based on recent key news:

1. On July 30, Cisco, along with several tech companies, established the "Open Security AI Alliance" aimed at co-developing open-source AI security tools. This initiative enhanced market confidence in Cisco's position in the AI field, driving the stock price up.

2. On July 30, analysts rated Cisco as "moderate buy," but it was not included in the top recommended stocks list. Nevertheless, the market remains optimistic about its future performance, supporting the stock price increase.

3. On July 28, market data showed that the average daily net retail buy volume for a single stock was at its lowest level since 2020, yet total trading volume remained at historical highs, indicating high market activity, which benefits Cisco. The tech industry is actively promoting AI security collaboration.

Nokia rose 7.13%, with active trading. Based on recent key news:

1. On July 29, Nokia senior manager Kristen Pressner purchased 66,324 shares of Nokia stock on the Helsinki Stock Exchange at a price of €7.84 per share, totaling approximately €520,000. This insider purchase reflects confidence in the company's future development, driving the stock price up

2. On July 31, S&P upgraded Nokia's outlook to "positive" due to its diversified business and stable cash flow, and confirmed a "BBB-" rating. This rating upgrade has enhanced market confidence in Nokia's financial health, further supporting the rise in its stock price.

3. On July 28, despite an overall decline in chip stocks, Bank of America Securities reiterated its positive outlook on AI memory chips, believing that current valuations are low. As an important player in communication infrastructure, Nokia benefits from the growth in AI infrastructure spending, and the market holds an optimistic view of its prospects. The growth in AI infrastructure spending indicates a positive industry outlook.

Stocks ranked among the top in industry market capitalization

Arista Networks rose by 6.93%. Based on recent key news:

1. On July 29, Needham analyst Ryan Koontz maintained a buy rating on Arista and raised the target price from $185 to $200. This positive analyst rating has boosted market confidence, driving the stock price up.

2. On July 28, Arista announced a significant partnership agreement with Kubota, which is seen as a major recognition of the company's technology and market position, further boosting the stock price.

3. On July 28, despite facing risks from increased R&D and manufacturing costs due to the transition to 800G network technology, Arista still demonstrated strong market performance, and investors remain optimistic about its long-term growth potential. The technology sector is performing strongly overall, with significant capital inflows