Stocks making the biggest moves midday: AMD, Corning, Arm Holdings, Cencora, Uber & more

Midday trading was driven by a wide spread of earnings and guidance updates, with notable winners including Flex (+35%) on a planned spin-off, Arm (+13%) on a higher UBS price target, and AMD (+17%) on strong second-quarter revenue guidance of $11.2B versus $10.52B expected. Positive surprises from Healthpeak, CVS, DaVita, Disney, Corning, Uber and Super Micro were offset by sharp declines in CDW (-19%), Cencora (-17%), Klaviyo (-32%), Arista (-17%) and Maplebear (-12%) after misses or cautious outlooks. Energy stocks also weakened after reports the U.S. and Iran may be nearing a deal, with APA and Occidental down 6% and Exxon/Chevron off about 4%.

Analysis

This tape is less about “beats and misses” than about capital spending gravity shifting toward AI infrastructure and away from generic software/services. The clearest second-order winner is the optical/networking supply chain: Corning’s new capacity commitment with Nvidia is a stronger signal than the stock move itself, because it implies multi-year demand visibility for high-speed interconnects and should ripple into component suppliers, contract manufacturers, and test/inspection vendors. By contrast, the selloff in networking and SaaS-adjacent names suggests investors are punishing any hint of margin normalization or decelerating budget cycles, which can create a feedback loop into enterprise IT procurement over the next 1-2 quarters.

The most important risk is that several of the biggest upside gaps are guidance-driven rather than demand-cleared. AMD and Super Micro both benefit from the market re-rating AI capacity winners, but the setup becomes fragile if near-term shipments disappoint or if customers pull forward orders faster than end-demand can absorb them. The same dynamic applies to Flex: a restructuring/spin is valuable only if the market assigns a meaningfully higher multiple to the separated asset, so the trade is more about rerating optionality than near-term fundamentals.

Healthcare is splitting into winners and losers based on reimbursement and mix, not broad sector strength. CVS and DaVita look like beneficiaries of better pricing/membership mix, while Cencora’s guidance reset suggests distribution economics are normalizing faster than investors expected. In energy, the geopolitical headline is a short-duration catalyst: the entire complex can rebound quickly if negotiations stall, but the market is already pricing an incremental supply risk fade, so the asymmetry favors tactical rather than structural shorts.

Key Decisions for Investors

• Long COR / short ANET for 4-8 weeks: own the clearest beneficiary of AI optical capex while fading a networking name where the market is now more sensitive to margin compression; target 8-12% relative outperformance, cut if ANET regains prior support on re-acceleration evidence.
• Buy AMD call spreads into the next 2-6 weeks, not outright stock: the guide can sustain another leg higher, but implied upside is now richer; prefer a defined-risk structure to capture continued AI multiple expansion while limiting post-earnings volatility.
• Fade KVYO on any bounce over the next 1-3 sessions with a short or put spread: CFO departure plus softer operating income guidance creates a credibility issue; this is a 1-2 quarter reset story, not a one-day gap that should be bought aggressively.
• Pair long DVA against short Cencora over 1-2 months: both are healthcare cash-flow names, but DVA has clearer pricing/mix momentum while Cencora’s growth downgrade suggests normalization risk; expect the market to reward the more durable earnings trajectory.
• Tactically short XLE on strength for 1-3 days only, or hedge existing energy longs with puts: the Iran headline is a fast-moving catalyst, but if talks wobble the group can snap back violently, so this is a tradeable headline fade rather than a core position.