Story
Semiconductor Stocks Rally While Ionis Pharma, Costco Shares Decline
Summary
Semiconductor firms like SanDisk and Lam Research posted significant gains on Thursday, leading a tech-sector rally. Conversely, company-specific news sent shares of Ionis Pharmaceuticals and Costco sharply lower.
The semiconductor sector experienced a broad rally during Thursday's trading session, with major industry players posting substantial gains. In contrast, several companies saw their stock prices fall sharply on company-specific news, including a failed clinical trial and a new share offering.
Chipmakers Lead Market Gains
Mega-cap technology firms were among the day's top performers, signaling strong investor sentiment in the chip industry. The rally was widespread among companies involved in semiconductor manufacturing and design.
Key performers in the sector included:
- SanDisk Corp-Exch (SNDK): +12.28%
- Lam Research Corp (LRCX): +6.95%
- Marvell Technology Group Ltd (MRVL): +6.79%
- Applied Materials Inc (AMAT): +5.17%
The positive momentum extended to other related companies. Cerebras Systems Inc. (CBRS) rose 10.71% after announcing an expansion of its AI system production, while Aehr Test Systems (AEHR) gained 12.62% on news of a new production order for its silicon photonics technology.
Company-Specific News Drives Volatility
AdElsewhere in the market, individual corporate developments triggered significant sell-offs. Ionis Pharmaceuticals (IONS) saw its shares plummet 23.74% following the announcement that its drug, eplontersen, failed to meet its primary endpoint in a clinical trial for heart disease.
In the retail sector, Costco Wholesale Corp (COST) fell 4.49% despite reporting a 10.6% year-over-year increase in June net sales to $29.24 billion. The negative market reaction suggests investor concerns may have outweighed the strong sales figures.
Among small-cap stocks, Gloo Holdings Ltd (GLOO) dropped 23.62% after pricing a public offering of 7 million shares at $3.25 each. Such offerings can dilute the value for existing shareholders, often leading to a near-term price decline.
Other Notable Movers
Thursday's session also featured significant activity in other sectors. In the digital asset space, crypto-mining firm Marathon (MARA) climbed 9.61% after announcing the acquisition of a Texas site with up to 2 gigawatts of power capacity, signaling a major expansion of its operations. In biotechnology, First Tracks Biotherapeutics (TRAX) was a standout small-cap performer, surging 49.69%.