Monday's market action produced notable divergences: some large-cap technology and storage names posted double-digit gains, while a number of other companies saw sharp declines tied to discrete announcements or analyst action. The day’s movers span mega-cap, large-cap, mid-cap and small-cap names, reflecting a patchwork of company-level news and investor responses.
Mega-Cap Movers (Market cap of $200 billion USD or higher)
- SpaceX (SPCX) +17.03%
- Micron Tech (MU) +9.63%
- Marvell Technology Group Ltd (MRVL) +9.4%
- Arm (ARM) +8.22%
- Seagate Technology (STX) +6.97%
- Adv Micro Device (AMD) +7.39%
- SanDisk Corp-Exch (SNDK) +6.21%
- Lam Research Corp (LRCX) +6.11%
- Facebook Inc (META) +5.11%
- Oracle Corp (ORCL) +5.16%
Large-Cap Stock Movers (Market cap of $10-$200 billion USD)
- Western Digital (WDC) +14.72%
- Applied Opt (AAOI) +14.68%
- Yandex (NBIS) +12.29%
- Doordash Inc (DASH) +10.26%
- Entegris Inc. (ENTG) +9.17%
- Tower Semiconductor (TSEM) +8.45%
- Reddit (RDDT) +9.09%
- Venture Global Inc (VG) -9.01%
- Fiserv Inc (FISV) -10.75%; Fiserv names Takis Georgakopoulos as new CEO
- Fox Corp (FOXA) -18.06%; Jefferies downgrades Roku stock rating on Fox acquisition deal
Mid-Cap Stock Movers (Market cap of $2-$10 billion USD)
- MUU (MUU) +19.42%
- AXT Inc (AXTI) +18.54%
- X Energy Inc (XE) +16.62%
- POET Tech NAQ (POET) +16.52%
- DPCM Capital (QBTS) +15.4%
- Cree Inc. (WOLF) +15.18%; Wolfspeed appoints Daniel Whalen as VP of investor relations
- Quantum Computing OTC (QUBT) +15.16%
- Colonnade Acquisition (OUST) +16.19%
- CF Acquisition Corp VI (RUMBW) +15.74%
- Fundrise Innovation Fund (VCX) -15.77%
Small-Cap Stock Movers (Market cap of $300 million - $2 billion USD)
- Horizon Quantum Holdings (HQ) +47.3%
- AAOX (AAOX) +28.23%
- WhiteFiber (WYFI) +21.28%
- Ehang Holdings Ltd (EH) +18.25%
- Digihost Technology NAQ (DGXX) +16.03%
- MULL (MULL) +19.5%
- Neumora Therapeutics (NMRA) -51.9%; Neumora discontinues navacaprant after phase 3 trial failures
- Studio City International Holdings (MSC) -18.83%
- ETHU (ETHU) +7.92%
- AXTX (AXTX) +0.73%
These lists capture the largest percentage movers called out in the session across market-cap cohorts. Several entries include company-specific notes provided alongside their price moves, such as leadership changes at Fiserv and an analyst downgrade tied to Fox Corp's acquisition-related activity. The small-cap cohort included the steepest single decline reported, with Neumora Therapeutics posting a near-52% drop tied to its decision to discontinue a Phase 3 drug candidate.
Markets on the day reflected a mosaic of reactions to discrete company developments as well as broader trading dynamics. The session’s data show both concentrated winners among technology and storage-related names and abrupt sell-offs where negative company-specific news was disclosed.
Key points
- Technology and storage-related names dominate the list of large percentage gainers in the mega- and large-cap groups, with SpaceX and Micron among the top performers.
- Company-specific announcements and analyst actions are linked to several of the declines reported, notably Fiserv's leadership change, a Jefferies downgrade connected to Fox's deal activity, and Neumora's clinical program halt.
- Movers span the market-cap spectrum, from mega-cap technology names to small-cap biotech and niche technology firms, illustrating cross-sector volatility.
Risks and uncertainties
- News-driven volatility: several of the largest declines and gains cited are associated with specific announcements, creating uncertainty for affected sectors such as payments (Fiserv) and media (Fox Corp).
- Clinical trial outcomes: the discontinuation of Neumora's navacaprant program highlights the binary risk inherent in biotech development and its large impact on small-cap valuations.
- Deal-related analyst action: the Jefferies downgrade tied to Fox’s acquisition activity points to the risk that transaction developments and related analyst responses can materially affect share prices in affected sectors.
This summary is a snapshot of the day’s most prominent percentage movers as reported for the session. The lists and annotations above reflect the moves and company-specific notes provided for Monday’s trading.