Stock Markets June 4, 2026 02:03 PM

Broadcom, Ciena and a Wide Range of Stocks See Big Moves on Thursday

Mega-caps, large-caps and small-caps register pronounced gains and losses driven by analyst actions, corporate updates and company-specific events

By Maya Rios
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AVGO MU ARM ANET UNH

Stocks across market-cap categories swung sharply on Thursday as individual company developments, analyst actions and corporate announcements pushed share prices in divergent directions. Mega-cap names such as Broadcom and Arista moved lower, while insurers, healthcare and some technology names posted notable gains. Large- and mid-cap issues also recorded double-digit moves, with several small-cap biotech and technology stocks posting the session's largest percentage changes.

Broadcom, Ciena and a Wide Range of Stocks See Big Moves on Thursday
AVGO MU ARM ANET UNH
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Key Points

  • Broadcom (AVGO) and Ciena (CIEN) were among the largest decliners on Thursday, with Broadcom pressured after an analyst downgrade tied to Google insourcing commentary and Ciena falling sharply.
  • Several companies posted double-digit rallies tied to company-specific events, including INIO pricing an upsized IPO at $27 and Redwire (RDW) advancing on a space-related project.
  • Biotech and small-cap names showed large dispersion - some reporting positive trial or regulatory news advanced strongly while others plunged, exemplified by ADC Therapeutics (ADCT) and Lion Biotechnologies (IOVA).

Thursday's trading session featured pronounced volatility across market-cap segments as disparate headlines and firm-specific developments produced both steep declines and sharp rallies.


Mega-cap movers ($200B+ market cap)

  • Avago Technologies (AVGO) -11.62% - hit after Macquarie downgraded Broadcom citing a Google insourcing shift.
  • Micron Technology (MU) -4.92%.
  • Arm (ARM) -4.14%.
  • Arista Networks (ANET) -4.72%.
  • UnitedHealth Group (UNH) +4.97%.
  • Eli Lilly and Co (LLY) +4.76%.
  • Goldman Sachs Group (GS) +4.73%.
  • Marvell Technology Group (MRVL) +4.87%.
  • Merck & Co (MRK) +3.67%.
  • American Express (AXP) +3.78% - benefitted from news that Amex and Delta are adding travel benefits to co-branded credit cards.

Large-cap movers ($10B-$200B market cap)

  • Ciena (CIEN) -14.93% - among the session's largest declines in the large-cap cohort.
  • Five Below (FIVE) -12.51% - slid despite reporting strong first-quarter results and providing guidance.
  • PayPay Corp (PAYP) -6.51%.
  • Regencell Bioscience Holdings (RGC) -6.86%.
  • Reddit (RDDT) +6.78%.
  • The Blackstone Group (BX) +7.38%.
  • Kratos Defense & Security (KTOS) +7.82%.
  • FedEx Freight Holding (FDXF) +7.42% - after Wolfe Research initiated coverage with an outperform rating.
  • Innio Holding GmbH (INIO) +22.3% - following pricing of an upsized IPO at $27 per share on Nasdaq.
  • Applied Optoelectronics (AAOI) +11.91%.

Mid-cap movers ($2B-$10B market cap)

  • PVH (PVH) -23.05% - one of the largest mid-cap declines.
  • Netskope Inc (NTSK) -17.94% - tumbled despite beating on first-quarter results, with weakness tied to free cash flow and a chief financial officer transition.
  • Redwire (RDW) +18.34% - advanced on news that the company will grow strawberries on the International Space Station in a greenhouse debut.
  • Liquidia Technologies (LQDA) +15.66%.
  • Oscar Health (OSCR) +15.24% - upgraded by Wells Fargo based on exchange market trajectory.
  • Ekso Bionics Holding (CHRN) +17.09%.
  • Innodata Isogen (INOD) +10.6%.
  • Spartacus Acquisition (NN) +11.64%.
  • Cree Inc. (WOLF) +8.56%.

Small-cap movers ($300M-$2B market cap)

  • ADC Therapeutics SA (ADCT) -55.2% - the steepest decline among the session's small caps; the company had reported positive phase 3 trial results.
  • Wowo Ltd (CD) -21.94%.
  • LightPath Technologies (LPTH) +18.97%.
  • Lion Biotechnologies (IOVA) +17.28% - reported news related to approval of Amtagvi in Australia.
  • Absci (ABSI) +17.93%.
  • Agilon Health (AGL) +16.65%.
  • Alvotech (ALVO) +16.24%.
  • InFintT Acquisition (CURR) +15.11%.
  • RoboStrategy (BOT) +14.39%.
  • AAOX (AAOX) +23.84%.

Across market caps, the session mixed steep losses and strong gains. Notable downside movers included Broadcom and Ciena among larger-cap names, while INIO, RDW, AAOX and several small- and mid-cap biotechnology and industrial names recorded double-digit advances. Several moves were linked to analyst actions, corporate financing events and regulatory or trial-related announcements that are company-specific.

Investors monitoring sector impacts should note pressure in networking and semiconductor-related names, while healthcare and alternative technology plays produced outsized positive moves in both the mid- and small-cap ranges.

Risks

  • Analyst downgrades and insourcing-related commentary can produce abrupt selloffs in technology and semiconductor stocks - a risk to investors in those sectors.
  • Company-specific operational or trial outcomes may trigger outsized volatility in biotech and small-cap stocks, increasing short-term downside risk for those exposures.
  • IPOs, upsized offerings and analyst initiations can drive sharp moves in shares of affected companies, creating event-driven volatility in capital markets and related sectors.

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