--- title: "U.S. stock market update: QUBT up 8.66%: IonQ's performance exceeds expectations, but analysts say it is not their top choice" type: "News" locale: "en" url: "https://longbridge.com/en/news/296646507.md" description: "Quantum Computing rose 8.66%; Apple fell 0.42%, with a transaction volume of 10.4 billion USD; SanDisk rose 0.02%, with a transaction volume of 10 billion USD; Seagate Technology rose 0.59%, with a transaction volume of 1.924 billion USD; Dell Technologies-C rose 0.78%, with a market value of 283.2 billion USD" datetime: "2026-08-21T19:33:11.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/296646507.md) - [en](https://longbridge.com/en/news/296646507.md) - [zh-HK](https://longbridge.com/zh-HK/news/296646507.md) generator: "portal-rs" --- # U.S. stock market update: QUBT up 8.66%: IonQ's performance exceeds expectations, but analysts say it is not their top choice **U.S. Stock Market Midday Update** Quantum Computing rose 8.66%. Based on recent key news: 1. On August 22, analysts rated Quantum Computing as a hold; despite its stock price increase, it was not listed as a top recommended stock. Analysts believe there are five other stocks that are more attractive, which may limit Quantum Computing's further upside potential. Source: MarketBeat 2. On August 19, IonQ reported strong quarterly revenue of $80.05 million, far exceeding expectations, and raised its revenue forecast for 2026. Although IonQ's losses were higher than expected, its growth momentum and outlook may pose competitive pressure on Quantum Computing. Source: MarketBeat The quantum computing industry is highly competitive with significant growth potential. **Top Stocks by Industry Trading Volume** Apple fell 0.42%, with increased trading volume. Based on recent key news: 1. On August 21, Apple paid $17 billion in taxes to Ireland, impacting the company's cash flow and investment capacity. This move was made to comply with a court ruling and resolve tax disputes. 2. On August 21, Morgan Stanley analysts pointed out that Apple's App Store revenue growth was below expectations, affecting service business growth forecasts. Analysts expect downward pressure on service business growth. 3. On August 19, Apple announced adjustments to its app commission structure in the EU market to comply with the Digital Markets Act. The new regulations will impact Apple's revenue structure in the EU. The market is skeptical about Apple's AI strategy, with high valuations. SanDisk rose 0.02%, with increased trading volume. Based on recent key news: 1. On August 21, SanDisk launched two new NAS SSDs aimed at professional users and small businesses. This move aims to enhance product competitiveness and may drive stock price increases. Source: Jinse Finance 2. On August 19, SanDisk's perpetual contract trading volume on the Binance platform surpassed Bitcoin, indicating increased activity of traditional stock assets in the crypto market. Source: Jinse Finance 3. On August 19, market analysis indicated that memory stocks like SanDisk have pulled back due to macroeconomic pressures and profit-taking, despite strong fundamentals. Source: Barron's The memory market demand is growing, with a complex macroeconomic environment. Seagate Technology rose 0.59%. Based on recent key news: 1. On August 21, memory stocks faced challenges, with Seagate's stock price falling about 20% from its peak. Despite strong fundamentals, market expectations and excitement may have peaked, leading to stock price volatility. Source: MarketWatch 2. On August 19, cyclical fluctuations in the enterprise storage market pose a threat to Seagate's hard drive operating profit margins. Potential flash memory price reductions and industry oversupply are major risks. Source: MarketWatch On August 19, Seagate executed a $5 billion stock repurchase plan aimed at extending the period of tight market supply and demand. This strategy helps support stock prices against the backdrop of increasing demand. Source: CNBC The memory industry faces macroeconomic pressures, with increased volatility. **Stocks ranked at the top of the industry market capitalization** Dell Technologies Inc. rose 0.78%. Based on recent key news: 1. On August 19, Dell Technologies announced a conference call scheduled for September 1 to discuss its second-quarter performance for fiscal year 2027. This news may trigger investor interest in the company's future performance, driving up the stock price. Source: Business Wire 2. On August 19, Dell Technologies renewed its partnership agreement with the esports brand Alienware, extending the collaboration for five years. The continuation of this long-term partnership may enhance market confidence in the Dell brand, supporting stock price increases. Source: Business Wire 3. On August 20, market observations pointed out that Dell Technologies has a high valuation, with a price-to-earnings ratio exceeding 34 times, which may lead to increased sensitivity among investors regarding profit realization. This information may have a short-term impact on stock price volatility. Source: MarketWatch The technology industry has high valuations, and investors should be cautious ### Related Stocks - [QUBT.US](https://longbridge.com/en/quote/QUBT.US.md) - [AAPL.US](https://longbridge.com/en/quote/AAPL.US.md) - [SNDK.US](https://longbridge.com/en/quote/SNDK.US.md) - [STX.US](https://longbridge.com/en/quote/STX.US.md) - [DELL.US](https://longbridge.com/en/quote/DELL.US.md) ## Related News & Research - [IONQ vs. RGTI vs. QUBT vs. QBTS: Which Quantum Stock Had the Best Q2 Earnings?](https://longbridge.com/en/news/296352941.md) - [3 Quantum Computing Stocks With Over 70% Upside, According to Analysts](https://longbridge.com/en/news/296655861.md) - [IonQ vs. Rigetti: The Better Quantum Computing Stock for Long-Term Investors](https://longbridge.com/en/news/296780641.md) - [IonQ (NYSE:IONQ) Shares Up 8.2% - Should You Buy?](https://longbridge.com/en/news/296655733.md) - [Quantum Computing (QUBT) Lifted Sales And Cut Its Loss, Is It Still A Bargain?](https://longbridge.com/en/news/296006824.md) --- > **Disclaimer: This article is for reference only and does not constitute any investment advice.**