Alphabet’s 7% SpaceX Stake Could Be Valued at $105B, Gemini Hits 21% Share

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Alphabet’s Gemini AI platform captured 21% of chatbot market share in 2025, up from 5% in 2024, and was chosen by Apple to power Siri. The company’s 7% SpaceX stake could be valued at $105B if SpaceX IPOs at $1.5T, and its Willow quantum chip outperformed leading supercomputers.

1. Alphabet Named a Core AI Holding for 2026

In a recent analyst roundup of the top five artificial intelligence stocks to own in 2026, Alphabet secured a place as one of two large-cap names offering investors conservative exposure to the AI theme. Experts cited Google’s sustained leadership in AI R&D—evidenced by the launch of Gemini 3 in November, which industry tracker Similarweb says helped push the model’s market share from 5% to an estimated 21% in 2025—and Alphabet’s diversified revenue base. With Google Search accounting for roughly 55% of Alphabet’s $260 billion in 2025 revenues and Google Cloud delivering year-over-year growth north of 25%, the company’s AI initiatives are expected to be accretive to earnings without concentrating risk in any single hardware or platform play.

2. Hidden Stake in SpaceX Strengthens Alphabet’s Long-Term Upside

A separate deep-dive report highlighted a lesser-known but strategically significant asset on Alphabet’s balance sheet: its approximately 7% ownership in Elon Musk’s SpaceX. That stake dates back to a $1 billion funding round in 2013 valuing SpaceX at $10 billion and has grown in notional terms alongside SpaceX’s most recent private valuation of $400 billion in mid-2025. Should SpaceX—or its subsidiary Starlink—move forward with a 2026 initial public offering at a projected $1.5 trillion valuation, Alphabet’s unpublished holdings could inject a multi-billion-dollar windfall into the company’s cash reserves.

3. Starlink IPO Could Unlock Hidden Value for Alphabet

Market observers now debate whether SpaceX will float the parent company or spin off Starlink, its satellite-internet arm that produced roughly 76% of SpaceX’s $15.5 billion in 2025 revenue. Given Starlink’s more predictable cash flows and faster path to profitability, analysts argue a Starlink IPO might precede—or even replace—a full SpaceX listing. For Alphabet, this scenario offers a twofold benefit: unlocking its SpaceX equity at a transparent market price and potentially reinvesting proceeds into its own AI infrastructure expansion, creating a feedback loop between satellite broadband capacity and cloud-based AI services.

4. Gemini’s Rapid Share Gains Signal Competitive Pressure

Data compiled by Similarweb reveals that Alphabet’s Gemini chatbot grew its share of global AI conversational searches by over 16 percentage points in 2025, while the once-dominant competitor saw its share decline by nearly 20 points in the same period. This market share swing not only underscores the success of Gemini 3—released late last year—but also highlights Google’s ability to integrate generative AI into core products, as evidenced by the rollout of AI Overviews in Search. Investors view this dynamic as a leading indicator for sustained ad revenue growth, since longer user sessions and higher query volumes tend to translate directly into increased monetization opportunities across Google’s ad network.

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