Marvell's GAAP Margin Gap Persists Amid Google Deal

Marvell Technology (MRVL) closed at $244.25 on September 18, erasing the 8% decline that followed its August 27 earnings call. This recovery occurred despite no changes in the underlying financial data, with the stock now trading above the $241.65 level implied by the median Wall Street price target set after the report. The share price stands 27% above the company’s three-year average multiple, even though management stated that the $120 billion Google custom-silicon warrant contributes minimal revenue before fiscal 2029.

The initial sell-off was driven by a disclosure regarding an expanded commercial agreement with Google rather than the quarterly results. This deal includes a warrant for up to 58.97 million shares at $206.58, linked to cumulative custom-silicon revenue through fiscal 2033. CEO Matt Murphy indicated that revenue tied to this warrant through fiscal 2028 was already reflected in prior guidance, suggesting the deal’s significance increases only from fiscal 2029 onward. This cautious outlook prompted the immediate market reaction, which has since been reversed by positive sentiment around AI chip demand.

GAAP margins lag non-GAAP performance

Marvell’s GAAP gross margin expanded for eight consecutive quarters, reaching 53.14% in the quarter ended August 1, 2026. This trend suggests that the lower margin profile of custom silicon is not dragging down the business overall. However, GAAP operating margin fell from a peak of 18.66% in January 2026 to 14.48% the following quarter, a drop of over four percentage points.

This decline coincided with the close of the Celestial AI acquisition in December 2025, which brought co-packaged optics technology to Marvell. GAAP operating expenses include acquisition-related costs and intangible amortization that are excluded from non-GAAP figures. By the most recent quarter, GAAP operating margin had recovered to 16.68%, remaining approximately two percentage points below its January peak. The company has not disclosed the specific size of the impact from these acquisition-related costs.

Revenue guidance reflects data center strength

Marvell raised its full-year fiscal 2027 revenue guidance to roughly $12 billion from $11.5 billion. Fiscal 2028 guidance increased to about $18 billion from $16.5 billion. Data center revenue, which accounts for 79% of the total, grew 46% year over year. These figures underscore the company’s reliance on the data center segment for growth.

Recent developments, including a Citi fireside chat and a Jefferies note citing strong AI chip demand, have supported the stock’s recovery. An expanded capacity deal with GlobalFoundries for optical interconnect chips also contributed to positive sentiment. Despite these factors, the stock’s rise of approximately 170% year-to-date has priced in much of the near-term upside, ahead of any concrete confirmation that the Google ramp is materializing as expected.

Valuation trades above historical averages

At 44.76x forward earnings, Marvell trades at a premium to its three-year average multiple of 35.2x. This valuation stretch persists despite management’s indication that the Google warrant’s revenue contribution is limited in the near term. The company’s non-GAAP figures, which emphasize gross margins near 59% and operating margins targeting 38% to 40%, present a cleaner narrative than the GAAP data, which reflects the financial burden of recent acquisitions.

Insider sales by CEO Matt Murphy and COO Chris Koopmans were small relative to their remaining stakes, indicating no significant change in internal confidence. The source, GN markets/earnings (en-US), notes that the stock’s trajectory remains tied to the execution of the Google deal and the integration of Celestial AI technologies. The margin gap between GAAP and non-GAAP metrics remains a key factor for investors assessing the company’s true profitability.