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Funding Success / Cowboy Space

Cowboy Space raises $275M Series B at $2B valuation and rebrands from Aetherflux

Index Ventures led the $275 million Series B at a $2 billion valuation. New investors include IVP, Blossom Capital and SAIC; returning investors include Breakthrough Energy Ventures, a16z, NEA, Interlagos and founder Baiju Bhatt. The company pivoted from pure space solar power beaming to vertically integrated orbital data centers and its own launch vehicle.

Why it matters

Large raise and rebrand signal serious capital commitment to the orbital-compute thesis, though execution risk on rocket and constellation remains high.

The numbers

Raised
$275M

$275M in Series B financing at a $2B valuation

Source
Valuation
$2B

at a $2B valuation

Source

Details

Funding

Round
series b
Lead investor
Index Ventures
Investors
Index VenturesIVPBlossom CapitalSAICBreakthrough Energy VenturesConstruct CapitalAndreessen HorowitzNEAInterlagosBaiju Bhatt

Coverage

2 reports
  1. Business Wire ·

    Cowboy Space Corporation Raises $275M Series B For Vertically-Integrated Orbital Data Centers and Rockets

    Formerly Aetherflux, the company raised $275 M Series B at $2 B valuation led by Index Ventures and rebranded to Cowboy Space. Focus expanded to orbital AI data centers and a purpose-built rocket whose upper stage becomes a 1 MW compute node. NVIDIA Space-1 Vera Rubin collaboration announced.

    90
  2. Cowboy Space ·

    Introducing Cowboy Space: A $275 Million Series B

    Company announcement of the Series B and rebrand, confirming collaboration with NVIDIA on Space-1 Vera Rubin modules for LEO AI infrastructure.

    35

AI-assisted summary of 2 reports; numbers link to their source. Spot an error? Tell us.

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Index Ventures led the $275 million Series B at a $2 billion valuation. New investors include IVP, B

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