Most active investors · Last 90 days

Ranked by rounds participated in, from announcements in Jul 21, 2026 – Oct 18, 2026. Lead counts include only confirmed lead roles.

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Hudson River TradingLatest Oct 14

Salience Labs · $125M Series B PicoJool · $27.5M Series A

6rounds

0led

Hardware 5AI 1

Series B 4, Series A 1, Series C+ 1

Oct 14, 2026

Details

New companies 6 · Follow-on 0

Stages: Series B 4, Series A 1, Series C+ 1

Salience Labs $125M Series B PicoJool $27.5M Series A Polaris Electro-Optics $50M Series B

Entrée CapitalLatest Oct 13

Undecimal Bio · $18M Seed Chamelio · $26M Series A

6rounds

2led

Enterprise software 2Biotech 1Cybersecurity 1

Seed 2, Series A 1, Series B 1, Series C+ 1, Undisclosed 1

Oct 13, 2026

Details

New companies 6 · Follow-on 0

Stages: Seed 2, Series A 1, Series B 1, Series C+ 1, Undisclosed 1

Undecimal Bio $18M Seed Chamelio $26M Series A Archy $50M Series C

Fidelity Management & Research CompanyLatest Oct 13

Soufflé Therapeutics · $135M Series B SiMa.ai · $150M Series C

6rounds

1led

AI 2Biotech 2Hardware 2

Series C+ 4, Growth 1, Series B 1

Oct 13, 2026

Details

New companies 5 · Follow-on 1

Stages: Series C+ 4, Growth 1, Series B 1

Soufflé Therapeutics $135M Series B SiMa.ai $150M Series C Crusoe >$3.9B Series F

TemasekLatest Oct 13

Soufflé Therapeutics · $135M Series B Vinci · $250M Series B

6rounds

3led

AI 1Biotech 1Healthtech 1

Series C+ 3, Series B 2, Undisclosed 1

Oct 13, 2026

Details

New companies 6 · Follow-on 0

Stages: Series C+ 3, Series B 2, Undisclosed 1

Soufflé Therapeutics $135M Series B Vinci $250M Series B Devoted Health $555M Series G

FelicisLatest Oct 8

Arena · $200M Series B Solcoa Industries · $75M Seed financing; equity, debt, and equipment financing

6rounds

2led

Defense tech 2Enterprise software 2AI 1

Series B 3, Series A 2, Seed 1

Oct 8, 2026

Details

New companies 4 · Follow-on 2

Stages: Series B 3, Series A 2, Seed 1

Arena $200M Series B Solcoa Industries $75M Seed financing; equity, debt, and equipment financing Magentic $18M Series A

MadronaLatest Oct 7

Vinci · $250M Series B Atomic · $12.5M Series A

6rounds

3led

AI 3Business services 1Ecommerce 1

Series A 3, Seed 2, Series B 1

Oct 7, 2026

Details

New companies 6 · Follow-on 0

Stages: Series A 3, Seed 2, Series B 1

Vinci $250M Series B Atomic $12.5M Series A Jack & Jill $40M Series A

Union Square VenturesLatest Oct 7

Nous Research · $90M Series B Efficient Computer · $100M Additional funding

6rounds

0led

Climate tech 3AI 1Hardware 1

Undisclosed 3, Series A 2, Series B 1

Oct 7, 2026

Details

New companies 5 · Follow-on 1

Stages: Undisclosed 3, Series A 2, Series B 1

Nous Research $90M Series B Efficient Computer $100M Additional funding Rune $40M Series A

Gradient VenturesLatest Oct 6

Zeroset · $5.2M Pre-Seed Feather Robotics Inc. · $7.6M Pre-seed

6rounds

3led

Developer tools 2Biotech 1Ecommerce 1

Seed 3, Pre-seed 2, Series B 1

Oct 6, 2026

Details

New companies 6 · Follow-on 0

Stages: Seed 3, Pre-seed 2, Series B 1

Zeroset $5.2M Pre-Seed Feather Robotics Inc. $7.6M Pre-seed Polyphron $20M Seed

Scale Venture PartnersLatest Oct 5

Namespace · $42M Series B Thatch · $108M New funding

6rounds

1led

Developer tools 2Healthtech 2Fintech 1

Series C+ 4, Series B 1, Undisclosed 1

Oct 5, 2026

Details

New companies 6 · Follow-on 0

Stages: Series C+ 4, Series B 1, Undisclosed 1

Namespace $42M Series B Thatch $108M New funding Inspiren $70M Series C

Garage CapitalLatest Oct 2

Hestus, Inc. · $7.4M Seed Daedal Systems · $4M Funding

6rounds

0led

AI 2Enterprise software 1Hardware 1

Pre-seed 3, Seed 1, Series A 1, Undisclosed 1

Oct 2, 2026

Details

New companies 6 · Follow-on 0

Stages: Pre-seed 3, Seed 1, Series A 1, Undisclosed 1

Hestus, Inc. $7.4M Seed Daedal Systems $4M Funding Astrus $12M Series A

In-Q-TelLatest Oct 1

Armadin · $255.5M Series B Locus Lock · Undisclosed Strategic funding

6rounds

0led

Defense tech 3Climate tech 1Cybersecurity 1

Series B 2, Undisclosed 2, Growth 1, Seed 1

Oct 1, 2026

Details

New companies 5 · Follow-on 1

Stages: Series B 2, Undisclosed 2, Growth 1, Seed 1

Armadin $255.5M Series B Locus Lock Undisclosed Strategic funding TERASi €11M Seed

IBB VenturesLatest Sep 29

Amara · €3.7M Pre-seed AERLIN · Undisclosed Seed

6rounds

1led

Climate tech 2AI 1Consumer 1

Pre-seed 5, Seed 1

Sep 29, 2026

Details

New companies 6 · Follow-on 0

Stages: Pre-seed 5, Seed 1

Amara €3.7M Pre-seed AERLIN Undisclosed Seed sci2sci €1.2M Pre-Seed

500 GlobalLatest Sep 28

erad · $22M Series A BRKZ · $31M Series B equity and growth debt

6rounds

1led

Ecommerce 2Fintech 2Defense tech 1

Pre-seed 2, Seed 1, Series A 1, Series B 1, Undisclosed 1

Sep 28, 2026

Details

New companies 6 · Follow-on 0

Stages: Pre-seed 2, Seed 1, Series A 1, Series B 1, Undisclosed 1

erad $22M Series A BRKZ $31M Series B equity and growth debt Raff $1.7M Pre-seed

LakestarLatest Sep 28

Modulate · $25M Funding round Exein · $270M Undisclosed

6rounds

0led

AI 2Cybersecurity 2Defense tech 2

Undisclosed 3, Seed 1, Series A 1, Series C+ 1

Sep 28, 2026

Details

New companies 6 · Follow-on 0

Stages: Undisclosed 3, Seed 1, Series A 1, Series C+ 1

Modulate $25M Funding round Exein $270M Undisclosed Twin1 AI $20M Seed

StepStone GroupLatest Sep 28

SiMa.ai · $150M Series C Crusoe · >$3.9B Series F

6rounds

0led

AI 3Climate tech 1Hardware 1

Series C+ 4, Series A 1, Series B 1

Sep 28, 2026

Details

New companies 6 · Follow-on 0

Stages: Series C+ 4, Series A 1, Series B 1

SiMa.ai $150M Series C Crusoe >$3.9B Series F Clay $115M Series D

Catalio Capital ManagementLatest Sep 24

BigHat Biosciences · $75M Series C Basecamp Research · $140M Series C

6rounds

2led

Biotech 5Healthtech 1

Series C+ 4, Series B 2

Sep 24, 2026

Details

New companies 6 · Follow-on 0

Stages: Series C+ 4, Series B 2

BigHat Biosciences $75M Series C Basecamp Research $140M Series C Enveda $311M Series E

Entrepreneurs FirstLatest Sep 24

ByteAsk · $1M Pre-seed Open Cosmos · €300M Funding round

6rounds

1led

AI 2Cybersecurity 1Enterprise software 1

Seed 3, Pre-seed 1, Series B 1, Undisclosed 1

Sep 24, 2026

Details

New companies 6 · Follow-on 0

Stages: Seed 3, Pre-seed 1, Series B 1, Undisclosed 1

ByteAsk $1M Pre-seed Open Cosmos €300M Funding round CloudNC $20M Series B extension

PXN VenturesLatest Sep 23

CSignum · £2.6M Follow-on funding Ryft · £20M Series B

6rounds

2led

AI 1Climate tech 1Cybersecurity 1

Undisclosed 3, Series B 2, Seed 1

Sep 23, 2026

Details

New companies 6 · Follow-on 0

Stages: Undisclosed 3, Series B 2, Seed 1

CSignum £2.6M Follow-on funding Ryft £20M Series B Expanse €4.5M Seed

Precursor VenturesLatest Sep 22

StarSling · Undisclosed Pre-Seed Snag · $4M Seed

6rounds

0led

Climate tech 2AI 1Developer tools 1

Seed 4, Pre-seed 2

Sep 22, 2026

Details

New companies 5 · Follow-on 1

Stages: Seed 4, Pre-seed 2

StarSling Undisclosed Pre-Seed Snag $4M Seed Bluecore Energy $50M Seed

Congruent VenturesLatest Sep 21

Fluxnium, Inc. · $7M Seed Robigo · Undisclosed Series A

6rounds

1led

Climate tech 2Agritech 1Fintech 1

Series A 3, Seed 1, Series C+ 1, Undisclosed 1

Sep 21, 2026

Details

New companies 6 · Follow-on 0

Stages: Series A 3, Seed 1, Series C+ 1, Undisclosed 1

Fluxnium, Inc. $7M Seed Robigo Undisclosed Series A Muon Space $250M Series C

A*Latest Sep 17

Watney Robotics · $80M Series A Antioch · $32M Series A

6rounds

0led

AI 3Enterprise software 1Proptech 1

Series A 3, Pre-seed 1, Seed 1, Series B 1

Sep 17, 2026

Details

New companies 6 · Follow-on 0

Stages: Series A 3, Pre-seed 1, Seed 1, Series B 1

Watney Robotics $80M Series A Antioch $32M Series A CivilGrid $26M Series A

Activate CapitalLatest Sep 17

Crusoe · >$3.9B Series F Rune · $40M Series A

6rounds

0led

Climate tech 3AI 1Media & gaming 1

Series C+ 3, Series A 2, Series B 1

Sep 17, 2026

Details

New companies 6 · Follow-on 0

Stages: Series C+ 3, Series A 2, Series B 1

Crusoe >$3.9B Series F Rune $40M Series A Light $46M Series A

AltimeterLatest Sep 17

Crusoe · >$3.9B Series F SciFin · $44M Seed

6rounds

1led

AI 2Defense tech 2Climate tech 1

Series C+ 5, Seed 1

Sep 17, 2026

Details

New companies 6 · Follow-on 0

Stages: Series C+ 5, Seed 1

Crusoe >$3.9B Series F SciFin $44M Seed Castelion $1B Series C

ConvictionLatest Sep 17

Watney Robotics · $80M Series A Keenable · $26M Seed

6rounds

0led

AI 1Climate tech 1Cybersecurity 1

Seed 3, Series B 2, Series A 1

Sep 17, 2026

Details

New companies 6 · Follow-on 0

Stages: Seed 3, Series B 2, Series A 1

Watney Robotics $80M Series A Keenable $26M Seed Primero $12M Seed

Breakthrough Energy VenturesLatest Sep 15

Planted · $31.8M Funding Physical Superintelligence (PSI) · $58M Seed

6rounds

1led

Climate tech 4AI 1Industrial tech 1

Series C+ 2, Seed 1, Series A 1, Series B 1, Undisclosed 1

Sep 15, 2026

Details

New companies 6 · Follow-on 0

Stages: Series C+ 2, Seed 1, Series A 1, Series B 1, Undisclosed 1

Planted $31.8M Funding Physical Superintelligence (PSI) $58M Seed FORM ENERGY $750M Series G

Scaleup Europe FundLatest Sep 15

EUCLYD · >€200M Series A Tandem Health · $100M Series B

6rounds

4led

AI 3Space tech 2Healthtech 1

Series C+ 3, Series A 1, Series B 1, Undisclosed 1

Sep 15, 2026

Details

New companies 6 · Follow-on 0

Stages: Series C+ 3, Series A 1, Series B 1, Undisclosed 1

EUCLYD >€200M Series A Tandem Health $100M Series B The Exploration Company $450M Series C

CapitalGLatest Sep 10

Clay · $115M Series D Celero Communications · $275M Series C

6rounds

1led

AI 2Climate tech 1Defense tech 1

Series C+ 6

Sep 10, 2026

Details

New companies 6 · Follow-on 0

Stages: Series C+ 6

Clay $115M Series D Celero Communications $275M Series C Lovable $400M Series C

Gokul RajaramLatest Sep 2

Aitan · $41M Funding Hypercubic · $5.3M Seed

6rounds

0led

Developer tools 2AI 1Biotech 1

Seed 3, Series A 2, Undisclosed 1

Sep 2, 2026

Details

New companies 6 · Follow-on 0

Stages: Seed 3, Series A 2, Undisclosed 1

Aitan $41M Funding Hypercubic $5.3M Seed Gamgee $4M Seed

Hitachi VenturesLatest Oct 16

RapidCanvas · $29M Series B Scimplify · $25M Strategic financing

5rounds

1led

AI 3Cybersecurity 1Industrial tech 1

Series B 3, Series C+ 1, Undisclosed 1

Oct 16, 2026

Details

New companies 5 · Follow-on 0

Stages: Series B 3, Series C+ 1, Undisclosed 1

RapidCanvas $29M Series B Scimplify $25M Strategic financing Ema $77M Series B

Janus Henderson InvestorsLatest Oct 15

OMass Therapeutics · $310M Series C Soufflé Therapeutics · $135M Series B

5rounds

0led

Biotech 4Climate tech 1

Series C+ 4, Series B 1

Oct 15, 2026

Details

New companies 5 · Follow-on 0

Stages: Series C+ 4, Series B 1

OMass Therapeutics $310M Series C Soufflé Therapeutics $135M Series B Encoded Therapeutics Inc. $275M Series F

“—” 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.