SS
Stanford's StartX Fund
Stanford's StartX Fund is a pre-seed to Series D stage investment firm. It has made 105 investments. Deal activity increased 60% year-over-year (8 deals in the last 12 months). Average disclosed round size is $25.4M (across 178 rounds with reported amounts).
Portfolio
105
Fund Size
—
Top Stage
Series A
Last 12 Mo
8
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
201 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Bundle | Pre-Seed | $5.5M | Jul 2026 |
| AAether AI | Seed | $20M | Jun 2026 |
 Slang.ai | Series B | — | Feb 2026 |
 Juvena Therapeutics | Series B | $33.5M | Jan 2026 |
| EEleven Labs, Inc. | Series D | — | Jan 2026 |
| PPumpkinseed | Series A | $20M | Jan 2026 |
 Scanner | Series A | $22M | Jan 2026 |
 WearLinQ | Series A | $14M | Dec 2025 |
 Simular | Series A | $21.5M | Dec 2025 |
 Adaptyx Biosciences | Seed | $14M | Oct 2025 |
 Zettablock | Series A | $18M | Sep 2025 |
 Riva | Pre-Seed | $3M | Aug 2025 |
 Cooler Heads Care | Series A | $11M | Jul 2025 |
 Nitricity | Seed | $10M | Mar 2025 |
 Twentyeight Health | Series A | — | Jan 2025 |
 BuildOps | Series C | — | Jan 2025 |
| EEleven Labs, Inc. | Series C | $100M | Jan 2025 |
| Simular | Series A | $21.5M | Jan 2025 |
| WWispr AI | Series A | $25M | Jan 2025 |
| WearLinQ | Series A | $14M | Jan 2025 |
 Mediwhale Inc. | Series A | $12M | Sep 2024 |
 Halo Industries | Series B | $80M | Jul 2024 |
| FFindigs, Inc. | Series B | — | Jun 2024 |
 Antora Energy | Series B | $150M | Feb 2024 |
 Empowerly | Series B | $15M | Feb 2024 |
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Top Co-Investors
GGV Capital7 shared
Greylock Partners7 shared
New Enterprise Associates7 shared
8VC6 shared
Innovation Endeavors6 shared
Gaingels5 shared
Sand Hill Angels5 shared
Maveron5 shared
Lowercarbon Capital5 shared
Khosla Ventures5 shared
Shasta Ventures5 shared
Accel5 shared
Acrew Capital4 shared
Insight Partners4 shared
Blackhorn Ventures4 shared
Xfund4 shared
RRE Ventures4 shared
Bessemer Venture Partners4 shared
GV4 shared
Emerson Collective4 shared
Last updated: 19 September 2026