Marvell (MRVL) Stock Jumps 3% After AMD Reveals It’s Been Buying

TLDR

• AMD disclosed a 65,516-share stake in Marvell (MRVL) via a 13F filing, valued at ~$6.5M at end of March
• The stake has since grown to ~$10.7M based on current prices
• MRVL rose 3% premarket following the news and is up over 93% year-to-date
• AMD also holds positions in Sanmina (SANM), Absci (ABSI), and newly disclosed Xanadu Quantum Technologies (XNDU)
• AMD itself gained 2.4% premarket and is up over 109% year-to-date

AMD disclosed a stake in Marvell Technology (MRVL) through a 13F filing released Tuesday, sending MRVL up 3% in premarket trading on Wednesday.

Marvell Technology, Inc., MRVL

The filing showed AMD held 65,516 MRVL shares at the end of March, valued at approximately $6.5 million at that time. Based on Marvell’s more recent closing price, that stake is now worth around $10.7 million.

MRVL has had a strong year, rising over 93% year-to-date heading into Wednesday’s session.

The 13F also revealed AMD maintained its existing positions in Sanmina (SANM), holding 1.15 million shares, and Absci (ABSI), where it held 5.71 million shares.

AMD also disclosed a new position in Xanadu Quantum Technologies (XNDU), valued at roughly $1.5 million. XNDU gained 1.7% in premarket trading on the news and is up 31.4% year-to-date.

AMD’s Own Stock in Focus

AMD itself gained 2.4% in premarket on Wednesday and has surged over 109% year-to-date, making it one of the stronger performers in the semiconductor space this year.

The company carries a P/E ratio of 146.98, near its one-year high of 149.24, reflecting a high valuation relative to earnings.

GuruFocus rates AMD’s GF Score at 83 out of 100, with a Financial Strength score of 9/10 and a Growth score of 10/10.

Despite those positives, insider activity has leaned heavily toward selling. AMD insiders sold $54.6 million worth of stock over the past three months, with no reported insider purchases during that period.

AMD’s market cap sits at approximately $730.98 billion.

What the 13F Filing Shows

13F filings are quarterly disclosures required by the SEC for institutional investors holding over $100 million in qualifying assets. They reflect holdings as of the end of the prior quarter.

AMD’s filing covers positions as of March 31, 2026. The Marvell stake it disclosed was a relatively small position in dollar terms but drew attention given the size of both companies.

The Xanadu Quantum Technologies position was a new addition to AMD’s disclosed holdings, valued at roughly $1.5 million at the time of filing.

MRVL closed its prior session before the filing disclosure and then moved higher in premarket trading once the AMD stake became public.

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