How Alphabet's $900 Million SpaceX Bet Became a $94 Billion Stake — and the Wild Post-IPO Ride That Followed

Here is what the regulatory filings and market data reveal about how that stake evolved, who else owns SpaceX stock, how retail investors have behaved, and what has happened to the stock since its blockbuster debut.

From a $900 Million Bet to a $94 Billion Windfall

The original investment and dilution. Google and Fidelity together put $1 billion into SpaceX in January 2015, with Google's share being roughly $900 million . At a $12 billion valuation, that gave Google a 7.5% stake . Over the following decade, SpaceX raised multiple additional financing rounds, which diluted Alphabet's holding. By the end of 2025, Bloomberg reported that Google LLC still owned a 6.11% stake .

The record-breaking IPO. SpaceX went public on June 12, 2026, pricing 555 million shares at $135 each, raising $75 billion and giving the company a $1.77 trillion valuation — the largest IPO in history . The stock opened at $150, closed its first day at ~$161 (up 19%), and briefly surged 28%, pushing its market cap past $2 trillion .

Disclosure of the $94 billion paper fortune. In its Q2 2026 13F filing, Alphabet formally disclosed its holdings for the first time. As of June 30, 2026, Alphabet held 551,189,500 shares of SpaceX, worth approximately $94.2 billion . This single position accounts for roughly 95% of Alphabet's entire disclosed public portfolio . Notably, Alphabet cannot sell any of these shares yet — the entire position is subject to sale restrictions .

Who Owns SpaceX? Post-IPO Institutional Ownership

Alphabet emerged as by far the largest single institutional holder of SpaceX, with its 551.2 million shares . Other major institutional positions disclosed in Q2 2026 13F filings include:

• BlackRock — 51 million Class A shares (valued at over $6.7 billion as of early August) .
• Fidelity Contrafund — $8.1 billion worth .
• Baron Partners Fund — $3.9 billion .
• Fidelity Blue Chip Growth Fund — a significant stake, valued at $3.1 billion .
• Baillie Gifford — 51.4 million shares .
• Valor Management LLC — a 3.82% holding .

In total, 1,255 institutional managers filed 13F reports for Q2 2026, and 206 of them reported a SpaceX position worth a combined $1.24 billion (likely excluding Alphabet's outsized holding) .

Elon Musk's control. Per SpaceX's EU prospectus, Musk holds 12.2% of Class A common stock and 93.3% of Class B common stock, giving him 84.3% of the voting rights — meaning he retains absolute control over the company despite the public listing .

Retail Trading Activity: A First-of-Its-Kind IPO Experiment

Unusually large retail allocation. Elon Musk broke the typical IPO playbook by allocating roughly 30% of SpaceX's IPO shares to retail investors — at least three times the usual 5–10% retail slice. This was a deliberate strategy to lean on his fan base to help steady the stock after its debut .

Post-IPO retail behavior. Retail investors were consistent net buyers in the weeks immediately following the IPO, helping defend the stock through its early volatility . However, that changed on Friday, August 7, 2026, when retail investors became net sellers for the first time. Mom-and-pop traders sold a net $4.5 million in SpaceX shares that day, according to Vanda Research data . Analysts attributed this to profit-taking and risk reassessment after the stock had already surged 67% above its IPO price before pulling back .

Recent Public Market Performance: A Volatile Ride

• IPO price: $135 per share (June 11, 2026) .
• First-day close: ~$161 (up 19%), valuing the company at ~$2.1 trillion .
• Peak post-IPO: The stock surged as much as 67% above its IPO price in the weeks after listing .
• Lockup expiry (August 6, 2026): More than 900 million shares were unlocked, more than doubling the publicly available float. This event allowed employees and early investors to sell for the first time . The stock initially rose ~6% on the news .
• Post-lockup price action: As of late July / early August, SPCX had traded near or below its IPO price of $135 at times, and was down roughly 60% from its post-IPO peak according to some reports . By mid-August 2026, the stock was trading in a range well off its highs, with the $94 billion valuation of Alphabet's stake based on a June 30 price of ~$170.86 — a figure that has likely shifted since then .

Key risk factors weighing on the stock:

• The massive lockup expiry flooding the market with new shares .
• A second insider unlock event reportedly approaching, which could add further selling pressure .
• Retail investors turning net sellers for the first time .
• The stock falling below its IPO price after its initial euphoric run .

Bottom Line

Alphabet's 2015 venture bet has generated one of the most successful investments in corporate history — a 100-fold paper return from $900 million to $94 billion. But with Alphabet locked up, Musk holding super-voting control, two lockup expiries shaking the float, and retail traders beginning to exit, the stock's post-IPO journey has been a volatile rollercoaster. The true value of Alphabet's stake will only be known when it can finally sell.