New York, January 6, 2026, 20:01 EST — Market closed
- Amphenol shares closed up 1.1% after an early drop tied to Nvidia’s Rubin platform unveiling.
- Evercore ISI said Rubin may reduce some cabling but lift demand for denser connectors, a core Amphenol product.
- The next catalyst is Amphenol’s fourth-quarter earnings call on Jan. 28.
Amphenol Corp (APH) shares closed up 1.1% at $141.38 on Tuesday after sliding as low as $130.62 earlier in the session. The stock was last up 0.1% at $141.49 in late after-hours trading.
The move followed Nvidia’s launch of its next-generation Rubin AI platform at CES, a design the company said uses a cable-free architecture. “Rubin arrives at exactly the right moment,” Nvidia CEO Jensen Huang said, with Nvidia saying Rubin-based products will be available from partners in the second half of 2026. 1
That matters for Amphenol because it sells high-speed connectors and cable assemblies that sit inside data-center servers and networking gear, making the stock sensitive to changes in how AI systems are built. Evercore ISI analysts wrote that while Rubin reduces conventional cabling, it should require denser connectors; they estimated Amphenol’s “content share” — the dollar value of its parts inside each Nvidia system — could rise 20% to 40% versus Blackwell and called the company a “critical enabler” of the next buildout. 2
In a technical blog, Nvidia said Rubin’s compute tray eliminates many manual connections inside the rack and can speed assembly and servicing by up to 18 times. That kind of redesign can shift the mix of spending across suppliers, and investors are still sorting out what it means for interconnect makers. 3
U.S. stocks finished higher on Tuesday, with the S&P 500 up 0.62% and the Dow Jones Industrial Average up 0.99%, according to MarketWatch data. For Amphenol holders, the day’s wide range showed how quickly sentiment can swing on a single AI hardware detail.
In related trading, TE Connectivity was little changed while Eaton gained, MarketWatch data showed, even as Amphenol rose. The split performance suggests investors are drawing finer lines between broad “AI exposure” and which parts of the rack capture the next dollar of spending.
With trading now shut, focus shifts to Amphenol’s Jan. 28 fourth-quarter earnings call and any commentary on information technology and data-communications orders tied to AI data centers. Investors are also watching for updates on Amphenol’s planned $10.5 billion purchase of CommScope’s connectivity and cable unit, a deal the companies expect to close in the first half of 2026. 4
But the Nvidia roadmap cuts both ways: if cable-free architectures spread faster than connector density rises, supplier expectations could reset. Any sign that data-center spending is cooling after a heavy buildout would likely hit connector and cable names quickly.
For now, traders will watch whether APH holds above $140 in the next session after Tuesday’s dip into the $130s. The next hard catalyst is Jan. 28, when management updates forecasts and investors get fresh detail on how much AI infrastructure is flowing into 2026 orders.
