Marvell Technology shares fell about 8% in premarket trading on Friday even after the chipmaker delivered stronger-than-expected second-quarter results and raised its long-term revenue outlook, highlighting how demanding investor expectations have become across the AI semiconductor industry.

The reaction was less a verdict on Marvell’s current business than a warning about the burden of expectations embedded in its share price. Marvell has gained roughly 184% this year, making it one of the major beneficiaries of the surge in spending on AI data centers. With the stock already pricing in rapid expansion, investors were looking for evidence that the company’s recently announced relationship with Google would translate into substantial revenue sooner than management currently expects.

Marvell reported fiscal second-quarter revenue of $2.74 billion, up 37% from a year earlier and above its previous guidance and Wall Street expectations. Adjusted earnings were 94 cents a share, also slightly ahead of estimates. Data center revenue, the engine of the company’s AI expansion, rose 46% to about $2.17 billion.

Chief Executive Matt Murphy said demand remained exceptionally strong.

“AI-related bookings remain exceptionally robust, and we expect our revenue growth to accelerate further through the remainder of fiscal 2027,” Murphy said.

Marvell also raised its fiscal 2027 revenue forecast to about $12 billion from $11.5 billion and lifted its fiscal 2028 target to roughly $18 billion from $16.5 billion. The latter implies approximately 50% growth and would represent a major expansion from the company’s $8.2 billion of revenue in fiscal 2026.

Yet the upgraded outlook was not enough to satisfy investors.

The key issue is timing. Marvell’s partnership with Google had generated expectations for a powerful new source of custom AI-chip revenue, but the latest disclosures indicate that the most significant contribution from that relationship is likely to come later, with material gains expected from fiscal 2029 onward. That pushed back some of the revenue opportunity investors had been assigning to the deal and helped trigger the sell-off.

The Google relationship gives Marvell exposure to the competitive market for custom accelerators and other chips designed specifically for hyperscalers. Google can purchase up to 58.97 million Marvell shares at $206.58 each under a warrant arrangement tied to the collaboration. The potential value of the equity component is about $12.2 billion.

But the agreement should not be interpreted as an immediate $12.2 billion revenue opportunity. The warrant is tied to the broader commercial relationship, while the underlying chip programmes require development, deployment and scaling over several years. That distinction appears to have become central to the market’s reaction.

Marvell’s current numbers nevertheless show that the underlying AI infrastructure cycle remains powerful. Data-center revenue of roughly $2.17 billion accounted for close to 80% of quarterly sales, making the segment increasingly central to the company’s financial profile.

The company’s custom silicon business has become an important part of its growth plan. Hyperscalers are now developing chips tailored to their own workloads as they seek greater control over performance, power consumption and cost. Marvell is positioned to benefit from that shift by designing and supplying chips for large cloud customers rather than relying solely on standardized processors.

That opportunity also creates a significant risk: concentration.

Marvell must continue winning major programmes from hyperscalers to sustain the growth rates now reflected in its valuation. Goldman Sachs has pointed to uncertainty over Marvell’s ability to add new custom-chip customers, while noting that the stock trades at a premium to peers. The bank described the latest results as an “incremental positive” but maintained a neutral view.

The valuation issue is difficult to ignore. Marvell’s shares have risen about 184% in 2026, and the company has become one of the market’s prominent beneficiaries of the AI infrastructure boom. At that level, a conventional earnings beat is no longer necessarily sufficient to drive the stock higher. Investors are demanding evidence of future growth that exceeds what has already been priced into the shares.

That helps explain why the company’s results produced such a counterintuitive reaction. Operationally, Marvell is accelerating. Its data-center business is growing rapidly, AI bookings remain strong, and management is raising its long-term revenue targets. But the stock market is judging the company against a much higher hurdle.

The contrast is increasingly visible across the AI semiconductor sector. The first phase of the AI rally rewarded companies simply for demonstrating exposure to surging data-center spending. The next phase is placing greater emphasis on the timing, durability, and returns of that spending.

For Marvell, it is no longer a question about whether AI demand exists; the latest results provide strong evidence that it does. The more consequential question is whether the company’s custom-chip pipeline can expand rapidly enough, across enough customers, to justify a valuation that already assumes years of exceptional growth.

The company is expected to provide additional details at its investor day in October, when investors will have a closer look at its custom silicon strategy and longer-term growth opportunities.