Marvell Jumps 12% on AI Chip Outlook, Zscaler Slumps on Billings

Shares of Marvell Technology surged more than 12% during midday trading on May 27, 2026, after the chip designer significantly raised its fiscal 2027 artificial intelligence revenue forecast. Zscaler Target to $150 on Growth Concerns">Cybersecurity firm Zscaler slumped over 8% following a billings report that fell short of elevated expectations. United Airlines stock also saw notable volatility, declining approximately 4% amid broader airline sector pressure, while Bath & Body Works advanced nearly 6% after an analyst upgrade.

Context — [why this matters now]

The midday movements reflect a market intensely focused on execution against AI-driven growth narratives and forward-looking metrics like billings. Marvell’s upward revision provides concrete evidence that the AI infrastructure build-out is accelerating beyond initial forecasts, a critical signal for the semiconductor sector. This comes against a macroeconomic backdrop of stable but elevated interest rates, with the 10-year Treasury yield hovering near 4.35%.

Zscaler’s decline underscores the heightened scrutiny on software companies’ ability to convert strong demand into tangible, billable contracts, especially after a period of strong outperformance. The company had outperformed the Nasdaq-100 index by more than 15 percentage points year-to-date prior to this report. The trigger for the sell-off was not a failure in growth but a failure to surpass the market’s optimistic assumptions about the pace of that growth.

United Airlines’ weakness is part of a broader pattern of pressure on travel-related stocks, with the U.S. Global Jets ETF declining 2% on the session. Concerns about rising fuel costs and moderating post-pandemic demand are weighing on airline valuations. Conversely, Bath & Body Works’ gain is a reminder of the ongoing investor search for value and turnaround stories in the consumer discretionary space.

Data — [what the numbers show]

Marvell Technology announced it now expects AI-related revenue in fiscal 2027 to exceed $5 billion, a substantial increase from prior projections. The company’s stock traded at $88.45, up $9.52, boosting its market capitalization by over $8 billion. Trading volume was heavy, exceeding its 65-day average by 250%.

Zscaler reported third-quarter billings of $628 million, missing the average analyst estimate of $645 million despite revenue beating expectations. The stock price fell to $162.10, a decline of $14.25. The company’s forward price-to-sales ratio compressed from 11x to approximately 10x following the drop.

United Airlines shares declined to $48.75, underperforming the S&P 500, which was flat on the day. Bath & Body Works rose to $42.80 after analysts at Barclays upgraded the stock to Overweight, citing an improved product lineup and margin expansion potential. The table below illustrates the magnitude of the key moves.

Company	Price Change	% Change	Key Metric
Marvell Technology	+$9.52	+12.1%	AI Revenue Guide >$5B
Zscaler	-$14.25	-8.1%	Q3 Billings $628M
United Airlines	-$2.10	-4.1%	Sector-wide pressure
Bath & Body Works	+$2.35	+5.8%	Barclays Upgrade

Analysis — [what it means for markets / sectors / tickers]

Marvell’s surge provided a significant tailwind for other semiconductor and infrastructure players. Peers like Nvidia and Advanced Micro Devices traded up 2% and 3%, respectively, as the news reinforced the strength of the entire AI supply chain. The positive sentiment also spilled over into semiconductor equipment makers, with Applied Materials gaining 1.5%.

Zscaler’s billings miss triggered a reassessment of high-multiple software stocks, particularly in cybersecurity. The First Trust Nasdaq Cybersecurity ETF declined 1.5%, with peers like CrowdStrike and Palo Alto Networks seeing losses of 2-3%. This indicates that investors are prioritizing hard commercial metrics over top-line growth narratives in the current rate environment.

A key risk to the bullish interpretation of Marvell’s guide is customer concentration; a significant portion of the AI revenue is tied to a limited number of hyperscale cloud partners. Any delay in their capital expenditure plans could materially impact Marvell’s results. Options flow data showed heavy buying of call options in Marvell, indicating bullish speculative positioning, while put activity increased sharply in Zscaler.

Outlook — [what to watch next]

The next immediate catalyst for the semiconductor sector will be earnings from Dell Technologies on May 30, which will provide insight into AI server demand. For Zscaler and the software cohort, the upcoming Fed meeting on June 18 will be critical, as any signal on interest rates will directly influence valuations for growth stocks.

Technically, Marvell stock faces resistance near its 52-week high of $92.50. A sustained break above that level could signal further momentum. For Zscaler, the $160 level represents key support; a breach could trigger a deeper correction toward $150. Investors will monitor the CBOE Volatility Index, which remains subdued below 14, suggesting overall market complacency despite single-stock turbulence.

Frequently Asked Questions

Why did Zscaler stock fall even though it beat revenue estimates?

Zscaler’s decline stemmed from its billings figure, which is a leading indicator of future revenue. Billings represent contracts signed but not yet recognized as revenue. The miss suggests that the pace of new business growth, while still positive, may be decelerating relative to the market’s high expectations. This is often interpreted as a potential peak in growth momentum, which is heavily penalized for stocks trading at premium valuations.

How does Marvell’s AI business compare to Nvidia’s?

Marvell’s AI business is focused on custom-designed networking and data processing chips that connect AI accelerators within data centers, a segment known as infrastructure. Nvidia dominates the market for the GPUs that perform the core AI computations. While Nvidia’s opportunity is larger in total addressable market, Marvell’s specialized chips are essential for scaling AI clusters. The companies are more complementary than directly competitive, with both benefiting from the same hyperscale capex cycle.

What is the historical performance of stocks after a significant guidance raise like Marvell’s?

Historically, stocks that pre-announce or significantly raise guidance tend to outperform the market over the subsequent 3-6 months. A study of S&P 500 companies from 2020-2025 showed that stocks rising on positive guidance revisions outperformed the index by an average of 5% over the next quarter. However, the magnitude of the initial pop, as seen with Marvell, often leads to short-term consolidation as traders take profits.

Bottom Line

Marvell’s raised AI forecast validates the infrastructure build-out thesis, while Zscaler’s billings miss highlights the market’s intolerance for any growth deceleration.

Disclaimer: This article is for informational purposes only and does not constitute investment advice. CFD trading carries high risk of capital loss.