--- title: "U.S. stock night trading volatility: Wolfspeed fell 7.98% in after-hours trading, with losses widening and guidance falling short of expectations, rating cautious" type: "News" locale: "en" url: "https://longbridge.com/en/news/296413626.md" description: "Wolfspeed fell 7.98% in after-hours trading; Micron Technology rose 0.95% in after-hours trading, with a transaction volume of USD 21.94 million; SK Hynix rose 1.82% in after-hours trading, with a transaction volume of USD 10.66 million; NVIDIA rose 0.57% in after-hours trading, with a transaction volume of USD 3.97 million" datetime: "2026-08-20T00:17:54.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/296413626.md) - [en](https://longbridge.com/en/news/296413626.md) - [zh-HK](https://longbridge.com/zh-HK/news/296413626.md) generator: "portal-rs" --- # U.S. stock night trading volatility: Wolfspeed fell 7.98% in after-hours trading, with losses widening and guidance falling short of expectations, rating cautious **U.S. Stock Night Market Movements** Wolfspeed fell 7.98% in the night market. Based on recent key news: 1. On August 19, Wolfspeed announced its fourth-quarter financial report, with a net loss of $145.4 million and an adjusted gross margin of -20%. The report indicated that the company is facing financial pressure, leading to a decline in stock price. Source: Reuters 2. On August 19, Wolfspeed projected first-quarter revenue between $140 million and $160 million, below analysts' expectations of $150.4 million. The poor revenue outlook further undermined market confidence. Source: Benzinga 3. On August 19, analysts rated Wolfspeed as "hold" and noted that five other stocks have more investment value. Analysts' cautious stance intensified negative sentiment towards the stock. Source: MarketBeatAI Data Center showed strong growth, but overall revenue declined. **Top Stocks by Industry Transaction Volume** Micron Technology rose 0.95% in the night market. Based on recent key news: 1. On August 17, Micron's stock price broke $1,000 as the U.S. government opposed the use of Chinese memory, driving the stock price up. Micron's stock closed at $1,011.75, an increase of 4.13%. Source: The Wall Street Journal 2. On August 18, rising bond yields caused Micron's stock price to drop 7% to $941.10, ending a five-day rally. The market is concerned that rising financing costs will impact AI infrastructure spending. Source: Barron's 3. On August 19, analysts remained optimistic about Micron, raising the target price to $1,550, expecting long-term profit growth. Source: Bank of America AI demand remains strong, and the memory market is experiencing increased volatility. SK Hynix rose 1.82% in the night market. Based on recent key news: 1. On August 19, SK Hynix announced a share buyback worth 40 trillion Korean won, which boosted the stock price. The company plans to repurchase up to 24 million shares from August 20 to November 19 and expand its shareholder return target for 2025 to 2027 to over 50% of cumulative free cash flow. Source: The Wall Street Journal 2. On August 19, SK Hynix's stock rose over 4% in the U.S. night market, after previously dropping over 3%. The stock price erased an 8.3% decline in the Korean stock market after the buyback news. Source: China Fund News 3. On August 19, SK Hynix's stock rose over 6% in pre-market trading after the company officially approved the buyback of 40 trillion Korean won in stock, with a buyback period of approximately three months starting from August 20. Source: The Wall Street Journal The chip industry's boom is gradually cooling down. Nvidia rose 0.57% in the night market, with a transaction volume of $3.97 million, and there were no significant news recently. Trading was active, with clear capital flows. Considering the sector and industry trends, the stock showed significant volatility, and specific reasons need further observation ### Related Stocks - [WOLF.US](https://longbridge.com/en/quote/WOLF.US.md) - [MU.US](https://longbridge.com/en/quote/MU.US.md) - [SKHY.US](https://longbridge.com/en/quote/SKHY.US.md) - [NVDA.US](https://longbridge.com/en/quote/NVDA.US.md) ## Related News & Research - [Dear Wolfspeed Stock Fans, Mark Your Calendars for August 19](https://longbridge.com/en/news/296387670.md) - [Wolfspeed Reports Financial Results for the Fourth Quarter of Fiscal 2026 | WOLF Stock News](https://longbridge.com/en/news/296395258.md) - [Wolfspeed (NYSE:WOLF) Issues Quarterly Earnings Results, Beats Estimates By $0.01 EPS](https://longbridge.com/en/news/296398818.md) - [Wolfspeed’s AI data-center sales increase. Why the stock is falling on earnings.](https://longbridge.com/en/news/296485888.md) - [D L Carlson Investment Group Inc. Purchases New Shares in McKesson Corporation $MCK](https://longbridge.com/en/news/296587606.md) --- > **Disclaimer: This article is for reference only and does not constitute any investment advice.**