Last updated 2026-06-18
Portfolio
4
in our dataset
Rounds participated
7
Rounds led
0
Rounds' value
$797.0M
total disclosed, rounds participated
Stages
A Round, B Round
About
01 Advisors (01A) is a venture capital firm founded in 2018 by former Twitter executives Dick Costolo and Adam Bain, with David Fischer joining as a partner in 2023. Based in San Francisco and New York City, 01A focuses on investing in technology companies that have achieved product-market fit, typically at Series A and B stages. The firm's partners leverage their extensive experience in scaling companies to assist founders in transitioning from building a product to building a company.
Portfolio · 4
Investment activity
Portfolio by sector
Business Software2
Fintech & Insurtech1
Cyber Security1
Funds · 2
- FUND III — $395M Nov 2023
- Fund II — $325M Feb 2021
Q&A
- What is 01 Advisors' primary investment focus?
- 01 Advisors focuses on investing in technology companies that have achieved product-market fit, typically at Series A and B stages. The firm's partners leverage their experience to assist founders in scaling companies.
- When was 01 Advisors founded and by whom?
- 01 Advisors was founded in 2018 by former Twitter executives Dick Costolo and Adam Bain. David Fischer joined as a partner in 2023.
- What are some of 01 Advisors' notable portfolio companies?
- 01 Advisors' portfolio includes companies such as Tipalti, which provides automation for supplier payments, and HoneyBook, a client management software.
- What is the capital raised for 01 Advisors' most recent fund?
- 01 Advisors closed its FUND III in November 2023, raising $395 million.
- What was the size of 01 Advisors' Fund II?
- 01 Advisors closed its Fund II in February 2021 with $325 million.
- Which sectors does 01 Advisors frequently invest in?
- 01 Advisors shows a concentration in Fintech & Insurtech and Business Software sectors, with three rounds each, and also in Cyber Security.
- What investment stages does 01 Advisors typically target?
- 01 Advisors primarily targets A Round and B Round investments, as indicated by their investment stages and the distribution of their rounds per stage.
- Who are the founding partners of 01 Advisors?
- The founding partners of 01 Advisors are Dick Costolo and Adam Bain, both serving as Managing Partners.
Full data — links, identifiers, deals & radar signals (jobs, patents, research, more)
External links
| Website | 01a.com/ |
|---|---|
| linkedin.com/company/36083635/ | |
| X / Twitter | twitter.com/01advisors |
| Wikidata | wikidata.org/wiki/Q137733759 |
Identifiers & details
| Founded | 2018 |
|---|---|
| Wikidata QID | Q137733759 |
Radar intelligence
Web history (Wayback)
| Domain | 01a.com |
|---|
Wikidata
| QID | Q137733759 |
|---|
Certificate / subdomain footprint
| Subdomains | 4 |
|---|