Stocks making the biggest moves premarket: Micron, ZScaler, MGM, Bath & Body Works and more

Premarket trading was driven by a mix of earnings beats, cautious guidance, and analyst actions, with Zscaler down more than 23% after issuing current-quarter revenue guidance of $875 million to $878 million below the $879 million consensus. Bath & Body Works rose 15% on better-than-expected Q2 guidance, while Semtech gained 7% after beating estimates and Micron advanced 7% as momentum continued following its $1 trillion market-cap milestone. Other notable moves included Insulet down about 5% on a voluntary device correction, Dick's Sporting Goods off 2.5% on lighter full-year guidance, and MGM up 3% after a JPMorgan upgrade.

Analysis

The key read-through is not that one cybersecurity print disappointed; it is that the market is using Zscaler as a proxy to de-rate the entire security growth cohort on the assumption that budget growth is normalizing faster than expected. That creates a potential setup for dispersion: platform names with broader product breadth and stronger renewal leverage should hold up better than point solutions if buyers are simply reallocating spend rather than cutting it outright.

The bigger second-order effect is in semis and infrastructure software, where the tape is rewarding evidence of durable capacity constraints and AI-linked demand while punishing any company showing deceleration or weaker forward commentary. That rotation suggests investors are paying up for supply-side scarcity and penalizing anything with even modest duration risk, which can persist for weeks if rates stay sticky and growth leadership remains concentrated.

On the consumer side, the move in specialty retail is a reminder that the market will tolerate mixed demand so long as management can protect near-term margins and avoid outright guide-downs. The risk is that elevated promotions and tariff/labor pressure will show up later in the summer, so the relief rally may be fragile if discretionary demand softens after the current earnings window.

The contrarian angle is that the cybersecurity selloff may be overdone versus fundamentals because one quarter of guide conservatism does not necessarily imply a structural demand break. Conversely, the strongest winners here are likely the names tied to visible order backlogs or pricing power; those can keep rerating even if end-demand is merely stable rather than accelerating.

Key Decisions for Investors

• Fade the knee-jerk security selloff with a basket long PANW / short ZS for 4-8 weeks: PANW should absorb budget reallocation better than a more execution-sensitive peer; target a 5-8% relative spread with a tight stop if ZS guidance is re-absorbed.
• Stay long MU and SNDK on a 1-3 month horizon as a momentum/supply-tightness trade: the setup favors names with pricing power and AI/storage linkage; use pullbacks of 3-5% to add, with upside extending if the market keeps rewarding scarcity.
• Avoid chasing BBWI into strength; consider selling out-of-the-money calls or trimming longs into the move. The near-term pop likely prices in too much optimism relative to a still-pressured discretionary backdrop, creating asymmetric downside if margins disappoint later in the summer.
• Use PODD weakness as a catalyst-driven short only tactically, not structurally: medical correction headlines can pressure shares for days to weeks, but the trade should be paired against a healthcare device peer to isolate execution risk rather than category risk.
• Add MOD on dips as an AI-infrastructure levered industrial, but size modestly. The market is rewarding backlog visibility; if data-center capex remains intact, the stock can re-rate further over the next quarter, though it is vulnerable if the cooling deal is treated as a one-off.