Alphabet's Hidden $100 Billion Stake Fuels Record Cloud Ambitions

Alphabet's hidden $100B SpaceX stake emerges as Google Cloud hits $70B run rate. Massive AI spending and strategic integrations drive growth amid overbought stock signals.

Alphabet Inc. is navigating a pivotal moment, propelled by a colossal, long-hidden asset and a cloud business firing on all cylinders. While investor attention is fixed on its massive artificial intelligence spending plans, a regulatory filing has revealed the tech giant is sitting on a SpaceX stake potentially worth $100 billion.

The disclosure came via a mandatory filing in Alaska, showing Google LLC held a 6.11% stake in Elon Musk’s SpaceX at the end of 2025. Following SpaceX’s merger with xAI in February, that holding is estimated to have diluted to roughly 5%. With SpaceX having confidentially filed for an initial public offering targeting a $2 trillion valuation, Alphabet’s slice could be worth approximately $100 billion. The IPO, reportedly planned for June, could raise up to $75 billion, potentially marking the largest debut in history.

This windfall traces back to a modest $1 billion investment made alongside Fidelity in 2015 when SpaceX was valued at $10 billion. While Alphabet remains silent on the holding, its financial impact is visible. In Q1 2025, the company recorded an $8 billion earnings contribution attributed to SpaceX, with total unrealized gains from private investments reaching $24.1 billion for the full year 2025.

This potential liquidity surge arrives as Alphabet’s core growth engine, Google Cloud, demonstrates staggering momentum. The cloud division’s backlog of committed business has exploded to $240 billion, a 55% jump from the prior quarter. Its annual revenue run rate now exceeds $70 billion, powered by an impressive leap in operating margin from 17.5% to 30.1%. More than 120,000 businesses currently use Alphabet’s AI stack.

To feed this demand, management has guided for capital expenditures between $175 billion and $185 billion in 2026, with a focus on the second half of the year. This follows $91 billion in CapEx spent in 2025.

The company is aggressively expanding its AI ecosystem. It recently launched a native Gemini app for macOS, closing a gap against rivals and making its AI freely accessible on all major desktop platforms. More strategically, Gemini is slated for integration into Siri and Apple Intelligence later this year. On the enterprise front, Alphabet announced an expanded partnership with GitLab, allowing developers to use Gemini models directly within their workflow, billed through existing Google Cloud contracts.

Investor positioning reflects this complex picture. While Kelleher Financial Advisors increased its stake by nearly 40% in Q4 2025, Performance Wealth Partners trimmed its holdings. Insiders sold approximately 2.07 million shares worth about $104.5 million over the past three months, including CEO Sundar Pichai’s sale of 32,500 shares for around $10 million in March.

Alphabet’s stock, trading near €285.80, sits just below its 52-week high, having more than doubled since its low in April 2025. A relative strength index (RSI) reading of 73.6 signals technically overbought conditions, setting the stage for a critical test on April 29th when the company reports Q1 2026 results. Analysts are forecasting year-over-year growth of 16.5% in search and 57.5% in cloud revenue.

The weeks surrounding the report are packed with events that could move the needle, including the Google Cloud Next conference from April 22-24, the YouTube Brandcast on May 13, and the Google I/O developer conference from May 19-20. The earnings release will serve as the first major validation point for Alphabet’s ambitious cloud forecasts and its staggering investment plans, with a potential SpaceX IPO waiting in the wings to reshape its financial future.