Fabrinet Drops After Earnings Dragging Down Peers Like Marvell and Amphenol
Fabrinet (FN) fell 20% after reporting Q4 revenue of $1.316B and EPS of $4.10, but Q1 guidance was seen as decelerating. This dragged down peers like Marvell (MRVL, -8%), Amphenol (APH, -7%), Coherent (COHR, -12%), and Lumentum (LITE, -10%). Anthropic's lower-than-expected ARR and 30-year Treasury yields also contributed to the sell-off in AI hardware stocks.
How this was made

The 30-second read
Why it matters
Fabrinet’s guidance range and cash flow details are the core catalyst, while Anthropic’s ARR miss versus expectations and a higher Treasury yield are presented as sentiment amplifiers that can extend the selloff to peers.
Market read
Traders are repricing AI-infrastructure growth expectations after FN’s guidance deceleration, with macro sentiment (Anthropic ARR expectations and US yields) increasing correlation risk across optics.
What to watch
The article highlights Anthropic ARR and Treasury yield as amplifiers, which may be driving correlation selling more than optics fundamentals; traders may need to separate company-specific guidance from macro-driven de-risking.
Background
The piece frames a beat-and-raise that turned into a decelerating setup due to Q1 guidance, free cash flow weakness, and broader AI spending anxiety.
Ticker impact
Fabrinet shares fell about 20% after Q1 guidance implied a smaller sequential step-up despite a Q4 beat and raise.
Near-term downside bias as traders reprice AI-infrastructure exposure and sequential growth expectations.
The article cites the specific guidance range, the magnitude of the earnings-day drop, and the cash flow/capex drag that turned a beat into a decelerating setup.
Marvell is cited as down nearly 8% as Fabrinet’s guidance deceleration drags the optical and connectivity complex lower.
Potential for continued weakness if investors extend the read-across from FN’s decelerating setup.
The article provides the contemporaneous move but no MRVL-specific new fundamentals, so impact is primarily sentiment and sector read-through.
Amphenol is cited as down about 7% in the same session as Fabrinet’s earnings-guidance disappointment pressures the complex.
Choppy to lower trading until the market differentiates winners from losers within the group.
The text attributes APH’s move to the broader drag from FN, not to a new APH catalyst.
Coherent is cited as off roughly 12% alongside the optical selloff triggered by Fabrinet’s decelerating Q1 guidance.
Downside pressure likely persists while AI hardware spending fears dominate.
COHR’s datacenter revenue growth is mentioned, but the article does not disclose a COHR-specific new negative fact.
Lumentum is cited as down about 10% as the optical and connectivity complex sells off after Fabrinet’s guidance disappointment.
Potential continued underperformance if the market keeps lowering sequential growth expectations across optics.
The article links the move to the complex-wide selloff rather than LITE-specific guidance or filings.
Market effects
Optical and connectivity names are trading as a single AI-hardware expectations basket after one company’s decelerating guidance.
Primarily US-listed semiconductor/optics complex spillover; no explicit regional macro linkage beyond US rates/AI sentiment.
AI hardware spending expectations and US Treasury yield moves are cited as amplifiers for global risk appetite in the supply chain.
Counterpoint
FN’s Q4 beat and record revenue/EPS could still support longer-term positioning, and the selloff may be overdone if sequential deceleration is temporary.
Key entities
- companyFabrinet
Optical manufacturer whose Q1 guidance deceleration and negative Q4 free cash flow details drove a ~20% drop.
- companyMarvell Technology
Optical/connectivity peer cited as down nearly 8% on the complex-wide drag.
- companyAmphenol
Connectivity peer cited as down about 7% in the same selloff.
- companyCoherent
Optical peer cited as down about 12% despite datacenter revenue growth.
- companyLumentum
Optical peer cited as down about 10% amid the group selloff.

