Market activity on Monday featured a number of notable percentage changes among both large and small publicly traded companies. Movements ranged from double-digit increases in several semiconductor and technology-linked names to declines in pockets of the storage and biotech space. Below is a sector-agnostic catalog of the biggest stock movers by market-cap segment, including context where provided.
Mega-Cap Movers (Market Cap: $200 billion USD or higher)
- Applied Materials (AMAT) +11.31%
- Palo Alto Networks (PANW) +7.86%
- Lam Research Corp (LRCX) +8.38%
- Seagate Technology (STX) +8.28%
- SanDisk Corp-Exch (SNDK) -4.62%
The mega-cap roster shows substantial upside for several equipment and cybersecurity names, with one notable storage name in decline.
Large-Cap Stock Movers (Market Cap: $10-$200 billion USD)
- Cerebras Systems Inc (CBRS) +17.86%
Among large-caps, Cerebras posted a strong percentage increase.
Mid-Cap Stock Movers (Market Cap: $2-$10 billion USD)
- Iridium Communications (IRDM); William Blair downgrades Iridium stock rating on Rocket Lab acquisition +23.76%
- Colonnade Acquisition (OUST) +23.58%
- TSLL (TSLL) +15.59%
- Planet Labs PBC (PL) +14.26%
- ACM Research Inc (ACMR) +12.89%
- Fly Leasing Ltd (FLY) +12.8%
Several mid-cap names climbed by double digits. For Iridium, the itemized line includes a firm note tied to a Rocket Lab acquisition and a related analyst action; despite the downgrade language, the stock registered a sizable percentage advance on Monday.
Small-Cap Stock Movers (Market Cap: $300 million - $2 billion USD)
- CF Acquisition V (SATL); Freedom Broker upgrades Satellogic stock rating to buy on resilient fundamentals +19.59%
- Swarmer Inc (SWMR) +19.97%
- Churchill Capital XI (CCXI) +17.24%
- Evommune (EVMN); Evommune’s EVO756 fails phase 2b trial in chronic urticaria -39.48%
Small-cap action included both upgrade-driven strength for SATL and a steep pullback for Evommune after the reported phase 2b trial result for EVO756 in chronic urticaria.
Takeaways
- Movers on Monday span market-cap categories, with particularly large percentage increases in several semiconductor, hardware and specialist technology names and pronounced weakness in a biotech small-cap.
- Some moves carry explicit catalysts noted alongside the price change - for example, an analyst downgrade mentioned in the Iridium line and an analyst upgrade noted in the Satellogic line - while other moves are presented without an accompanying driver.
This account lists the largest percentage stock movers observed on Monday by market-cap tier and reproduces the company-level moves and the explanatory notes provided in each line.