
01 Advisors
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
- 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
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






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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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