Socii Capital is an early-stage venture capital firm that partners with bold, mission-driven entrepreneurs building next-generation software-enabled digital infrastructure companies. The firm runs a highly concentrated portfolio strategy, writing a limited number of lead checks and maintaining deep, lasting relationships with founders.
Their most common stage is series-a (50% of deals). Average disclosed round size is $29.6M (across 11 rounds with reported amounts).
Portfolio
11
Fund Size
—
Top Stage
Series A
Last 12 Mo
0
Team
LF
Leigh Fogelman
Co-Founding Partner
YC
Yuan Chen
Co-Founding Partner and CEO
SM
Simon Mahony
Partner
JB
Jack Blyzinskyj
Principal
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
14 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| AAshvattha | Series B | $119M | Jan 2025 |
 Numeric | Series B | $51M | Jan 2025 |
| Numeric | Series A | $28M | Oct 2024 |
 Building Radar | Unknown | — | Oct 2024 |
 Ship Angel | Unknown | $5M | Jan 2024 |
 Vellum | Series A | $20M | Jan 2023 |
 Standard Metrics | Series A | $23.7M | Feb 2022 |
 PortalOne | Series A | — | Jan 2022 |
 Lendtable | Series A | $18M | Jan 2021 |
| GGolden Recursion | Series A | $14.5M | Sep 2020 |
 KOPE | Seed | — | — |
| QQuaestor | Series A | $23.7M | — |
| Standard Metrics | Series B | $20M | — |
| Lendtable | Seed | $3M | — |
Top Co-Investors
8VC5 shared
Access Industries3 shared
Founders Fund3 shared
Gaingels3 shared
First Trust Capital Partners3 shared
January Capital3 shared
Spark Capital3 shared
Y Combinator3 shared
Long Journey Ventures2 shared
Menlo Ventures2 shared
Friends & Family Capital2 shared
Fifth Down Capital2 shared
The Slack Fund2 shared
Not Boring Capital2 shared
Alpha Edison2 shared
Streamlined Ventures2 shared
Valor Equity Partners2 shared
Institutional Venture Partners1 shared
Fin Capital1 shared
Open Opportunity Fund1 shared
Last updated: 20 October 2026