Trading on Thursday produced a mix of pronounced gains and losses across market-cap segments. Activity was driven by company-level announcements and earnings-related data rather than a single market catalyst, producing winners and losers from mega-cap technology to small-cap biopharma.
Mega-cap highlights (Market Cap: $200B+)
- SanDisk Corp-Exch (SNDK) climbed 12.28%.
- Lam Research Corp (LRCX) was up 6.95%.
- Marvell Technology Group Ltd (MRVL) gained 6.79%.
- Applied Matls Inc (AMAT) rose 5.17%.
- Costco Whsl Corp New (COST) fell 4.49% - the company reported June net sales of $29.24 billion, an increase of 10.6% year-over-year.
Large-cap movers (Market Cap: $10B-$200B)
- Isis Pharma (IONS) declined 23.74% after its eplontersen failed to meet the primary endpoint in a heart disease trial.
- Cerebras Systems Inc (CBRS) rose 10.71% as Flex and Cerebras expand AI system production in California.
- Amkor Technology (AMKR) increased 9.4%.
- Entegris Inc. (ENTG) climbed 8.11%.
Mid-cap action (Market Cap: $2B-$10B)
- 10X Genomics Inc (TXG) advanced 12.75%.
- Aehr Test Systems (AEHR) rose 12.62% after receiving a silicon photonics production order.
- Marathon Pa (MARA) gained 9.61% following the acquisition of a Texas site with up to 2 GW power capacity.
- Chenghe Acquisition II (PLBL) fell 17.4%.
Small-cap movers (Market Cap: $300M-$2B)
- First Tracks Biotherapeutics (TRAX) jumped 49.69%.
- Zafgen Inc (LRMR) increased 17.59%.
- Bull Horns (ZSQR) rose 15.63%.
- Helen of Troy Ltd (HELE) gained 14.88%.
- East Stone Acquisition Corp (AIIO) fell 15.4% and Legato Merger III (ENRD) dropped 15.09%.
- Gloo Holdings Ltd (GLOO) declined 23.62% after pricing a public offering of 7 million shares at $3.25 each.
The session underscored how discrete operational updates, trial outcomes, production deals and capital market activity can produce sharp moves in individual equities across capitalization ranges. Semiconductor and equipment names recorded notable strength, while biotech trial setbacks and financing actions weighed on selected issuers.
Market context and implications
- Sector dispersion was evident - technology and semiconductor-related firms were among the day's strongest performers, while certain healthcare and small-cap stocks experienced steep losses.
- Company-specific news, such as clinical trial results and capital raises, drove several of the larger percentage moves rather than broad macro developments.
Further information
This report summarizes the largest reported percentage movers across market-cap brackets for the trading day. The figures above reflect individual stock performance tied to company disclosures and announced developments.