So I've been digging into Alphabet's portfolio moves lately, and there's something interesting brewing in the satellite space that caught my attention.

Alphabet, Google's parent company, has positioned itself as one of the early believers in AST SpaceMobile. The company currently holds 8.9 million shares worth around $903 million, making it their largest public stock investment according to their latest 13F filing. What's particularly interesting is how this investment came about.

Back in early 2024, Alphabet jumped in alongside AT&T and Vodafone through convertible notes at $5.75 per share. The conversion trigger was straightforward - if the stock hit 130% above that price for 30 days, the notes would automatically convert. That happened in early 2025, which means Alphabet's convertible position turned into nearly 26 million shares, with their current holdings at 8.9 million. Pretty solid entry point if you think about the long-term thesis.

Now, what's AST SpaceMobile actually doing? They're building a global cellular network from low Earth orbit - think continuous mobile coverage from space. The company has already moved beyond R&D into actual commercial operations, which is a big deal for a space venture.

The momentum is real. They've locked down 50 mobile operators covering 3 billion subscribers worldwide, plus government contracts including $43 million with the Space Development Agency and $20 million with the Defense Innovation Unit. These aren't small partnerships.

For 2026, the execution phase is critical. The company is targeting 45 to 60 satellites in orbit by year-end to enable continuous coverage across the U.S., Europe, and Japan. They've already deployed six BlueBird satellites, with the sixth being a next-generation 2,400 square-foot model - currently the largest communications satellite array in low Earth orbit. A seventh was scheduled for launch with Blue Origin's New Glenn vehicle.

Here's what makes this interesting from an investment angle: AST SpaceMobile has actually built serious financial cushion. They ended last year with $2.8 billion in cash, raised another $1 billion through convertible notes in February, and still have $80 million available under their at-the-money facility. Management is saying they're fully funded to build and launch a 100-satellite constellation.

Analysts are projecting $178 million in revenue this year, jumping to $805 million in 2027 and $2 billion by 2028, with profitability expected by 2028. That's the growth narrative that got Alphabet interested in the first place.

Now, the reality check - the stock isn't trading cheap. It's at 155 times this year's projected sales and around 81 times 2028 projected earnings. This is definitely a bet on execution and long-term growth, not a value play. If you're the type of investor who can handle the volatility that comes with early-stage space infrastructure plays, it's worth watching. But this is aggressive territory, not something for conservative portfolios.

The fact that Alphabet is holding these shares tells you something about conviction at the institutional level, but remember - Alphabet has a whole investment arm betting across AI, healthcare, and infrastructure. This is just one piece of their portfolio puzzle.