Series X Capital

San Francisco, CA venture fund with exclusive rights to invest in spinouts from Alphabet's X, The Moonshot Factory; reports over $600 million under management.

Type: VC firm
Location: San Francisco, California, United States
Backs: B2B software, Climate and energy
Sectors: AI, Climate and cleantech, Mobility, Deep tech
Fund size / AUM: $541.7M Series X Capital Fund I (Form D offering, 2025); $193.4M gross private fund assets (Form ADV; private funds: 3, of which venture capital: 3)
Portfolio mix: B2B software 47%; Climate and energy 27%; Deep tech 13%; Hardware 13% (n=8)
Website: seriesxcapital.com

Contacts on file

For Series X Capital, the paid file holds: 4 named decision-makers with roles; firm contact email (domain checked); LinkedIn page.

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Notable investments

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Sources

Last checked 5 Nov 2026. Is something wrong? Tell us.

Appears in 23 lists

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