01 Advisors

Venture Capital

Venture and advisory firm founded by former Twitter CEO Dick Costolo and COO Adam Bain, helping founders go from building a product to building a company.

San Francisco, United States · 41+ investments · 55 portfolio companies

Early Stage
Growth
SaaS
Headquarters
San Francisco, United States
Founded
2018
Website
01a.com
AUM
$1.0B
Portfolio Companies
55
Total Investments
41
Last Investment
May 2026
Geographic Focus
North America, United States

Investment Thesis

Proven scaled operators investing in hyper-growth technology companies, leveraging operational expertise from Twitter and Facebook to help portfolio companies reach the next level.

01 Advisors is a Venture Capital firm based in San Francisco, United States. It has made 41 investments in SaaS, including Future, Metropolis and It’s Good.

Portfolio55

Co-investors24

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24 co-investors across 115 shared portfolio companies — who they back alongside, and how often they lead.

Venture Capital ×20 · Hedge Fund ×2 · Corporate VC ×1 · 35 shared rounds

Investment History

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