Amazon's Disclosed Equity Portfolio: Five Names, 99.7% Concentration
As seen on the 24/7 Wall St. homepage on November 3, 2026.
- RIVNRIVIAN AUTOMOTIVE INC62.7%
- X-ENERGY INC24.7%
- BETABETA TECHNOLOGIES INC6.9%
- MRVLMARVELL TECHNOLOGY INC2.8%
- ALABASTERA LABS INC2.6%
As of Sep 30, 2026 · disclosed Nov 3, 2026 · ~45 days stale — long positions only.
Nearly 100% of Amazon's disclosed equity book sits in just five names, with Rivian alone at 62.7% as of September 30. The reportable portfolio is a narrow bet on EVs, nuclear and AI silicon.
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Amazon's 13F filing, disclosed on November 3 and covering positions as of September 30, 2026, reveals a remarkably narrow equity book. Across just six reportable positions, five holdings account for 99.7% of the total portfolio, making this one of the most concentrated institutional disclosures of any large-cap company.
Rivian Automotive dominates the portfolio at 62.7%, reflecting Amazon's commercial and financial ties to the EV maker. X-Energy Inc ranks second, signaling a commitment to next-generation nuclear power.
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Beta Technologies, the electric aviation company, sits third, followed by two semiconductor names with direct relevance to AI infrastructure: Marvell Technology and Astera Labs. Both chip designers point to Amazon betting on the silicon layer powering data-center workloads.
The filing maps cleanly to Amazon's own operational priorities: EVs tie to its delivery fleet, nuclear to its long-term energy needs for data centers, and AI silicon to AWS. The 13F does not capture private investments or holdings below SEC reporting thresholds, so these positions represent only the slice of Amazon's investment activity that triggers mandatory disclosure.