Applied Materials, Lam Research, Monolithic Power Systems, Marvell Technology, and MACOM Shares Are Falling, What You Need To Know
Shares of Applied Materials, Lam Research, Monolithic Power Systems, Marvell Technology, and MACOM fell 6.4%, 7.7%, 7.1%, 6.9%, and 11.9% respectively, after CEOs of Anthropic, OpenAI, and SpaceX called for a slowdown in AI development, raising concerns about tech valuations and chipmaker earnings.
How this was made

The 30-second read
Why it matters
The statement triggered a sell‑off in AI‑exposed semiconductor stocks, reflecting investor concerns over future capex.
Market read
The AI safety narrative is creating short‑term pressure on semiconductor equities tied to AI hardware demand.
What to watch
Potential for alternative AI hardware (e.g., FPGA, ASIC) to offset demand loss for traditional silicon.
Background
A joint statement by Anthropic, OpenAI and SpaceX CEOs called for a deliberate slowdown in frontier AI model development due to safety risks.
Ticker impact
Applied Materials fell 6.4% after AI leaders called for a slowdown in frontier model development.
Potential short‑term rebound if slowdown concerns ease; otherwise further downside.
The move is driven by a macro‑level AI safety narrative, not company‑specific fundamentals.
Lam Research declined 7.7% following the AI‑safety slowdown call by Anthropic, OpenAI and SpaceX CEOs.
Likely to stay under pressure unless AI spending outlook improves.
Same macro catalyst as other chipmakers; no new company‑specific news.
Monolithic Power Systems dropped 7.1% after the AI safety appeal sparked market concerns.
Short‑term weakness expected; watch for any sector‑wide recovery cues.
Price move is a reaction to broader AI sentiment, not to MPWR’s own actions.
Marvell Technology fell 6.9% as the AI slowdown narrative weighed on semiconductor stocks.
Potential further decline if AI spending guidance stays weak.
Movement tied to sector‑wide risk perception rather than Marvell‑specific events.
MACOM slid 11.9% after the AI safety call triggered a sell‑off in high‑growth chip makers.
Expect continued volatility; downside risk remains elevated.
The decline mirrors the broader sector reaction to the AI safety narrative.
Market effects
AI safety concerns could dampen capital spending across the semiconductor sector.
U.S. tech‑heavy indices may see pressure; Asian chip makers could feel spillover effects.
The AI slowdown narrative may influence global AI‑related investment strategies.
Counterpoint
If AI safety regulations tighten, only the most efficient chipmakers may gain market share, creating buying opportunities.
Key entities
- CompanyAnthropic
AI research firm whose CEO authored the safety essay.
- CompanyOpenAI
AI organization whose CEO endorsed the slowdown call.
- CompanySpaceX
Aerospace firm whose CEO also supported the AI safety appeal.



