Most active investors · All time

Ranked by rounds participated in, from announcements across all periods. Lead counts include only confirmed lead roles.

151

T. Rowe Price AssociatesLatest Aug 19

Castelion · $1B Series C K2 Space · $500M Series D

3rounds

—led

AI 1Defense tech 1Space tech 1

Series C+ 3

Aug 19, 2026

Details

New companies 3 · Follow-on 0

Stages: Series C+ 3

Castelion $1B Series C K2 Space $500M Series D SambaNova $350M Series E

152

Capricorn Investment GroupLatest Aug 18

Velaura AI · $110M Series A OpenLight · $50M Series A1

3rounds

—led

Hardware 2AI 1

Series A 3

Aug 18, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 3

Velaura AI $110M Series A OpenLight $50M Series A1 Eridu $200M Series A

153

NeoLatest Aug 18

Etched · $700M Series D Altara · $7M Seed

3rounds

0led

AI 1Climate tech 1Hardware 1

Seed 1, Series A 1, Series C+ 1

Aug 18, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 1, Series A 1, Series C+ 1

Etched $700M Series D Altara $7M Seed Inertia Enterprises $450M Series A

154

DisruptiveLatest Aug 17

Groq · $350M Series A Groq · $650M Growth

3rounds

1led

AI 2Defense tech 1

Growth 1, Series A 1, Series C+ 1

Aug 17, 2026

Details

New companies 2 · Follow-on 1

Stages: Growth 1, Series A 1, Series C+ 1

Groq $350M Series A Groq $650M Growth Shield AI $1.5B Series G

155

Friends & Family CapitalLatest Aug 12

Heaviside Industries · $60M Series B Astranis · $450M Series E

3rounds

—led

AI 1Defense tech 1Space tech 1

Series A 1, Series B 1, Series C+ 1

Aug 12, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 1, Series B 1, Series C+ 1

Heaviside Industries $60M Series B Astranis $450M Series E Eridu $200M Series A

156

Dylan FieldLatest Aug 11

Neros Technologies · $250M Series C BRINC · $125M Growth

3rounds

—led

Defense tech 2Climate tech 1

Growth 1, Series B 1, Series C+ 1

Aug 11, 2026

Details

New companies 3 · Follow-on 0

Stages: Growth 1, Series B 1, Series C+ 1

Neros Technologies $250M Series C BRINC $125M Growth Panthalassa $140M Series B

157

S3 VenturesLatest Aug 11

Versa Vascular · $42M Series C Advanced NanoTherapies · >$31M Series B

3rounds

—led

Healthtech 3

Series C+ 2, Series B 1

Aug 11, 2026

Details

New companies 3 · Follow-on 0

Stages: Series C+ 2, Series B 1

Versa Vascular $42M Series C Advanced NanoTherapies >$31M Series B Endovascular Engineering $80M Series C

158

Peak XV PartnersLatest Aug 10

Discovered Materials · $9M Seed Helion · $465M Series G

3rounds

—led

AI 1Climate tech 1Healthtech 1

Seed 2, Series C+ 1

Aug 10, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 2, Series C+ 1

Discovered Materials $9M Seed Helion $465M Series G Temple $54M Seed

159

GalvanizeLatest Aug 5

WindBorne Systems · $37M Series B DISA Technologies · $33M Strategic

3rounds

—led

Climate tech 2Hardware 1

Undisclosed 2, Series B 1

Aug 5, 2026

Details

New companies 3 · Follow-on 0

Stages: Undisclosed 2, Series B 1

WindBorne Systems $37M Series B DISA Technologies $33M Strategic Normal Computing $50M Strategic

160

General AtlanticLatest Aug 5

Iceye · €1B Undisclosed SambaNova · $1B Series F

3rounds

—led

Space tech 2AI 1

Series C+ 2, Undisclosed 1

Aug 5, 2026

Details

New companies 2 · Follow-on 1

Stages: Series C+ 2, Undisclosed 1

Iceye €1B Undisclosed SambaNova $1B Series F Iceye €450M Series F

161

Global BrainLatest Aug 4

JIJ · $5.2M Strategic Starlight Engine · $37.4M Series A

3rounds

0led

Climate tech 1Developer tools 1Hardware 1

Series A 2, Undisclosed 1

Aug 4, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Undisclosed 1

JIJ $5.2M Strategic Starlight Engine $37.4M Series A AlixLabs €15M Series A

162

HV CapitalLatest Aug 4

Ore Energy · $43M Series A ARX Robotics · €11M Series A extension

3rounds

0led

Defense tech 2Climate tech 1

Series A 2, Series C+ 1

Aug 4, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Series C+ 1

Ore Energy $43M Series A ARX Robotics €11M Series A extension Quantum Systems €160M Series C

163

CoatueLatest Aug 3

Base Power · $1B Series D Sila · $300M Growth

3rounds

0led

Climate tech 2AI 1

Series C+ 2, Growth 1

Aug 3, 2026

Details

New companies 3 · Follow-on 0

Stages: Series C+ 2, Growth 1

Base Power $1B Series D Sila $300M Growth Cerebras Systems $1B Series H

164

Snowpoint VenturesLatest Aug 3

Valar Atomics · $1B Series B Astranis · $450M Series E

3rounds

0led

Climate tech 1Defense tech 1Space tech 1

Series C+ 2, Series B 1

Aug 3, 2026

Details

New companies 3 · Follow-on 0

Stages: Series C+ 2, Series B 1

Valar Atomics $1B Series B Astranis $450M Series E Shield AI $1.5B Series G

165

Trust VenturesLatest Aug 3

Base Power · $1B Series D Antora Energy · $550M Series C

3rounds

0led

Climate tech 2Industrial tech 1

Series C+ 2, Series A 1

Aug 3, 2026

Details

New companies 3 · Follow-on 0

Stages: Series C+ 2, Series A 1

Base Power $1B Series D Antora Energy $550M Series C Foundation Alloy $22M Series A

166

Salesforce VenturesLatest Jul 30

Antora Energy · $550M Series C Upscale AI · $190M Series A+

3rounds

0led

AI 1Climate tech 1Hardware 1

Series A 2, Series C+ 1

Jul 30, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Series C+ 1

Antora Energy $550M Series C Upscale AI $190M Series A+Hark $700M Series A

167

EarlybirdLatest Jul 21

ORiS · €5M Pre-Seed QuantumDiamonds · €15M Undisclosed

3rounds

—led

Hardware 2Space tech 1

Pre-seed 1, Series A 1, Undisclosed 1

Jul 21, 2026

Details

New companies 3 · Follow-on 0

Stages: Pre-seed 1, Series A 1, Undisclosed 1

ORiS €5M Pre-Seed QuantumDiamonds €15M Undisclosed eleQtron €57M Series A

168

Uncork CapitalLatest Jul 13

Quadric · $16M Series C+Inertia Enterprises · $450M Series A

3rounds

—led

AI 1Climate tech 1Hardware 1

Series C+ 2, Series A 1

Jul 13, 2026

Details

New companies 2 · Follow-on 1

Stages: Series C+ 2, Series A 1

Quadric $16M Series C+Inertia Enterprises $450M Series A Quadric $30M Series C

169

IQ CapitalLatest Jul 9

QuantumDiamonds · €15M Undisclosed Imperagen · £5M Seed

3rounds

—led

Biotech 1Climate tech 1Hardware 1

Seed 1, Series C+ 1, Undisclosed 1

Jul 9, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 1, Series C+ 1, Undisclosed 1

QuantumDiamonds €15M Undisclosed Imperagen £5M Seed Nyobolt $60M Series C

170

Assam VenturesLatest Jul 8

SambaNova · $1B Series F EPIC Microsystems · $21M Series A

3rounds

—led

AI 2Hardware 1

Series C+ 2, Series A 1

Jul 8, 2026

Details

New companies 2 · Follow-on 1

Stages: Series C+ 2, Series A 1

SambaNova $1B Series F EPIC Microsystems $21M Series A SambaNova $350M Series E

171

Draper AssociatesLatest Jul 8

Venus Aerospace · $91M Series B Casimir · $12M Seed

3rounds

—led

Hardware 1Mobility 1Space tech 1

Seed 1, Series A 1, Series B 1

Jul 8, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 1, Series A 1, Series B 1

Venus Aerospace $91M Series B Casimir $12M Seed Natilus $28M Series A

172

Johnson ControlsLatest Jun 30

Omen AI · $31M Series A Armada · $230M Series B

3rounds

—led

AI 1Hardware 1Industrial tech 1

Series B 2, Series A 1

Jun 30, 2026

Details

New companies 3 · Follow-on 0

Stages: Series B 2, Series A 1

Omen AI $31M Series A Armada $230M Series B Accelsius $65M Series B

173

Silent VenturesLatest Jun 30

Dominion Dynamics · CA$139M Series A Traysar · $25M Seed

3rounds

—led

Defense tech 2AI 1

Seed 1, Series A 1, Series B 1

Jun 30, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 1, Series A 1, Series B 1

Dominion Dynamics CA$139M Series A Traysar $25M Seed Armada $230M Series B

174

AlibabaLatest Jun 29

X Square Robot · Undisclosed Series C ROBOTERA · $200M Growth

3rounds

—led

Robotics 2Healthtech 1

Growth 1, Series C+ 1, Undisclosed 1

Jun 29, 2026

Details

New companies 3 · Follow-on 0

Stages: Growth 1, Series C+ 1, Undisclosed 1

X Square Robot Undisclosed Series C ROBOTERA $200M Growth StairMed CN¥500M Strategic

175

British Design FundLatest Jun 24

LabCycle · £430K Seed Cordon Technologies · £1M Seed

3rounds

—led

Agritech 1Climate tech 1Hardware 1

Seed 2, Pre-seed 1

Jun 24, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 2, Pre-seed 1

LabCycle £430K Seed Cordon Technologies £1M Seed SmartyPlants £190K Pre-Seed

176

Cerberus VenturesLatest Jun 24

AquaPoro Technologies · $5M Seed Layup Parts · $42M Series A

3rounds

—led

Climate tech 1Defense tech 1Space tech 1

Series A 2, Seed 1

Jun 24, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Seed 1

AquaPoro Technologies $5M Seed Layup Parts $42M Series A Star Catcher Industries $65M Series A

177

DaphniLatest Jun 23

Astral Systems · £23M Series A TerraSpark · €5M Pre-Seed

3rounds

0led

Climate tech 1Hardware 1Industrial tech 1

Pre-seed 1, Series A 1, Series B 1

Jun 23, 2026

Details

New companies 3 · Follow-on 0

Stages: Pre-seed 1, Series A 1, Series B 1

Astral Systems £23M Series A TerraSpark €5M Pre-Seed Pasqal €100M Series B

178

Kindred VenturesLatest Jun 18

Architect Labs · $24M Seed Hydra Host · $100M Series A

3rounds

—led

AI 2Hardware 1

Series A 2, Seed 1

Jun 18, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Seed 1

Architect Labs $24M Seed Hydra Host $100M Series A Sandbar $23M Series A

179

MagnetarLatest Jun 16

Hydra Host · $100M Series A TensorWave · $350M Series B

3rounds

—led

AI 2Space tech 1

Series B 2, Series A 1

Jun 16, 2026

Details

New companies 3 · Follow-on 0

Stages: Series B 2, Series A 1

Hydra Host $100M Series A TensorWave $350M Series B Turion Space $75M Series B

180

SBI InvestmentLatest May 29

XCENA · $135M Series B Sonire Therapeutics · $18M Series A

3rounds

—led

AI 1Hardware 1Healthtech 1

Series A 2, Series B 1

May 29, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Series B 1

XCENA $135M Series B Sonire Therapeutics $18M Series A Cognichip $60M Series A

“—” in Led means every role for that investor in this period is undisclosed; it does not mean zero leads. New companies counts the first participation in a company in our records; follow-on counts later participation.