Key Takeaways
- Marvell Technology (MRVL) closed at $244.25 on September 18, a fresh high that fully erases the more than 8% drop the stock took the day after its August 27 earnings call, even though nothing about the underlying numbers has changed since then.
- Marvell’s GAAP gross margin has expanded every quarter for two straight years, reaching 53.14% in fiscal Q2 2027, but GAAP operating margin fell from 18.66% to 14.48% the same quarter Marvell absorbed costs tied to its Celestial AI acquisition, and has only partly recovered since.
- At 44.76x forward earnings, Marvell trades 27% above its own three-year average multiple of 35.2x, even though management says the $120 billion Google custom-silicon warrant it disclosed in August contributes little revenue before fiscal 2029.
- The stock is now trading above the roughly $241.65 level implied by Wall Street’s median $275 price target set right after earnings, meaning much of the near-term upside case is already priced in ahead of any confirmation that the Google ramp is real.
Marvell Stock’s Round Trip From Panic to New Highs
Marvell’s (MRVL) fiscal second-quarter report on August 27 beat estimates and came with a real raise: full-year fiscal 2027 revenue guidance rose to roughly $12 billion from $11.5 billion, and fiscal 2028 guidance jumped to about $18 billion from $16.5 billion. Data center revenue, 79% of the total, grew 46% year over year.
Instead, the stock fell more than 8% the next day, wiping out roughly $17.4 billion in market value. The reason wasn’t the results, it was a separate disclosure investors couldn’t yet size. A week earlier, Marvell had disclosed an 8-K covering an expanded commercial agreement with Google, including a warrant for up to 58.97 million shares at $206.58 that could accompany as much as $120 billion in cumulative custom-silicon revenue through fiscal 2033. CEO Matt Murphy told analysts that revenue tied to the warrant through fiscal 2028 was already reflected in prior guidance, and that the deal becomes “much more significant” starting fiscal 2029. That answer, more caution than confirmation, is what investors sold.
Three weeks later, Marvell has recovered the entire drop and then some. A Citi fireside chat on September 9, a Jefferies note on September 18 calling AI chip demand “extremely strong,” and an expanded GlobalFoundries capacity deal for Marvell’s optical interconnect chips all landed in the same window, without a single new guidance figure from Marvell itself. The stock is up roughly 170% since the start of the year. Insider sales by Murphy and COO Chris Koopmans were both small relative to their remaining stakes and don’t change that picture.
The GAAP Margin Story Behind Marvell’s Custom Silicon Ramp
Marvell’s non-GAAP figures, the ones emphasized on earnings calls, tell a clean story: gross margin near 59% and operating margin marching toward a 38% to 40% long-term target. GAAP data tells a more layered one.
On a GAAP basis, Marvell’s gross margin has risen for eight consecutive quarters, from 46.58% in the quarter ended November 2024 to 53.14% in the quarter ended August 1, 2026. That trend argues against the idea that custom silicon’s lower margin profile is dragging down the business as a whole.
GAAP operating margin tells a different story. It climbed from near breakeven to a peak of 18.66% in the quarter ended January 31, 2026, then dropped sharply to 14.48% the following quarter, a decline of more than four percentage points in a single quarter. That drop coincides with the close of Marvell’s acquisition of Celestial AI in December 2025, the deal that brought Marvell its co-packaged optics technology for scale-up networking. GAAP operating expenses include acquisition-related costs and intangible amortization that non-GAAP figures strip out, and Marvell has not disclosed the size of that specific impact. By the most recent quarter, GAAP operating margin had recovered to 16.68%, still about two percentage points below its January peak.
CFO Dan Durn’s own framing on the Q2 2027 earnings call, that operating expenses will grow “at roughly half the rate of revenue growth” as custom scales, is a non-GAAP argument. It says nothing about whether integration costs from Celestial AI, or the next acquisition, keep showing up below the gross margin line on a GAAP basis. Investors relying only on the non-GAAP glide path are getting a smoothed version of a business that, on the numbers Marvell actually reports, is not moving in a straight line.
MRVL’s 45x Multiple Is Betting Heavily on Fiscal 2029
Marvell’s forward price-to-earnings ratio has taken its own round trip. It spiked from the high 20s in early 2024 to a peak of 69.72x around its custom-silicon news flow in mid-2026. It then fell alongside the post-earnings selloff before climbing back to 44.76x as of September 18. That is 27% above Marvell’s own three-year average of 35.2x, and more than double the 17.58x trough the stock touched in 2025.
That premium has to be paid for with something, and the something on offer is mostly a story about fiscal 2029 and beyond, since Murphy has said the near-term custom ramp is already in the numbers. Sell-side reaction after earnings is a useful anchor: at least eight brokerages raised price targets to a median of $275, which implied about 13.8% upside from Marvell’s pre-selloff close of roughly $241.65. Marvell’s September 18 close of $244.25 is already above that reference point, closing that gap without any new fundamental catalyst arriving in between.
None of this makes the multiple wrong. Roughly 50% projected revenue growth in fiscal 2028 could justify a premium over slower-growing peers like Broadcom. But a 44.76x multiple sitting well above Marvell’s own trading history is a bet that management’s cautious, back-half-loaded framing of the Google relationship undersells what is coming, at a moment when the GAAP numbers show integration costs are a live variable, not a settled one.
Is Marvell’s Premium Still Earned Heading Into Fiscal 2029?
The bull case for Marvell doesn’t require imagination. Data center revenue is compounding near 50% annually, connectivity remains differentiated, and the custom silicon model, where customers fund much of the R&D, is a real structural advantage visible in Marvell’s steadily rising GAAP gross margin.
The risk is timing and execution, not the strategy. Marvell itself has drawn the line: the Google warrant’s biggest revenue impact lands in fiscal 2029, not sooner, and the one place investors can already check execution quality, GAAP operating margin, took a real step back the same quarter Marvell closed an acquisition central to its optics roadmap, and has not fully recovered two quarters later.
Marvell’s October 6 Investor Day is the next real test. If management shows GAAP operating margin retracing toward its January 2026 peak and gives a credible, dated path for the custom business beyond the “over double” framing it has repeated for two quarters, the current multiple looks earned. If the margin gap persists or widens as more of the optics and switching roadmap gets built through acquisition, the 44.76x multiple will have priced a smoother story than the one Marvell’s own GAAP filings currently support.
Should You Invest in Marvell Technology, Inc.?
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Disclaimer:
Please note that the articles on TIKR are not intended to serve as investment or financial advice from TIKR or our content team, nor are they recommendations to buy or sell any stocks. We create our content based on TIKR Terminal’s investment data and analysts’ estimates. Our analysis might not include recent company news or important updates. TIKR has no position in any stocks mentioned. Thank you for reading, and happy investing!
