Most active investors · All time

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

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TemasekLatest Jul 20

CuspAI · $450M Series B Stegra · €1.4B Growth

4rounds

—led

Climate tech 2AI 1Foodtech 1

Growth 2, Series B 1, Series C+ 1

Jul 20, 2026

Details

New companies 4 · Follow-on 0

Stages: Growth 2, Series B 1, Series C+ 1

CuspAI $450M Series B Stegra €1.4B Growth waterdrop €100M Growth

better venturesLatest Jul 7

Porelio · €2.4M Pre-Seed Critical Loop · $26M Series A

4rounds

—led

Climate tech 4

Pre-seed 2, Seed 1, Series A 1

Jul 7, 2026

Details

New companies 4 · Follow-on 0

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

Porelio €2.4M Pre-Seed Critical Loop $26M Series A TerraSpark €5M Pre-Seed

Safar PartnersLatest Jul 7

Quaise Energy · $134M Series B Gradiant · Undisclosed Series E

4rounds

—led

Climate tech 4

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

Jul 7, 2026

Details

New companies 4 · Follow-on 0

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

Quaise Energy $134M Series B Gradiant Undisclosed Series E Via Separations $36M Undisclosed

BHP VenturesLatest Jun 18

Cuprum Metals · $19.4M Series A Terra AI · $20M Series A

4rounds

—led

Climate tech 3AI 1

Series A 2, Series B 1, Undisclosed 1

Jun 18, 2026

Details

New companies 4 · Follow-on 0

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

Cuprum Metals $19.4M Series A Terra AI $20M Series A DISA Technologies $33M Strategic

Norrsken EvolveLatest Jun 4

New Dawn Bio · €2.1M Pre-Seed Spiral Hydrogen · €2.7M Pre-Seed

4rounds

—led

Climate tech 3Robotics 1

Pre-seed 4

Jun 4, 2026

Details

New companies 4 · Follow-on 0

Stages: Pre-seed 4

New Dawn Bio €2.1M Pre-Seed Spiral Hydrogen €2.7M Pre-Seed Bubble Robotics $5M Pre-Seed

Cambridge Enterprise VenturesLatest Jun 3

Gigaton · $26M Series A Seprify · €13.4M Series A

4rounds

0led

Climate tech 3Industrial tech 1

Seed 2, Series A 2

Jun 3, 2026

Details

New companies 4 · Follow-on 0

Stages: Seed 2, Series A 2

Gigaton $26M Series A Seprify €13.4M Series A xWatts £1.6M Seed

Voima VenturesLatest May 5

Reduciner · €3.6M Undisclosed TheStorage · €3.6M Seed

4rounds

—led

Climate tech 3Developer tools 1

Seed 2, Series A 1, Undisclosed 1

May 5, 2026

Details

New companies 4 · Follow-on 0

Stages: Seed 2, Series A 1, Undisclosed 1

Reduciner €3.6M Undisclosed TheStorage €3.6M Seed Photoncycle €15M Series A

Aurum ImpactLatest Oct 13

Epyr · €15M Series A Reverion · $175M Series B

3rounds

0led

Climate tech 3

Series A 2, Series B 1

Oct 13, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Series B 1

Epyr €15M Series A Reverion $175M Series B VARM €17.5M Series A

DaphniLatest Oct 13

Epyr · €15M Series A Astral Systems · £23M Series A

3rounds

0led

Climate tech 2Industrial tech 1

Series A 2, Pre-seed 1

Oct 13, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Pre-seed 1

Epyr €15M Series A Astral Systems £23M Series A TerraSpark €5M Pre-Seed

Marunouchi Innovation PartnersLatest Oct 12

1KOMMA5° · ~€70M Equity financing Emerald AI · $150M Series A

3rounds

0led

Climate tech 3

Series A 1, Series C+ 1, Undisclosed 1

Oct 12, 2026

Details

New companies 3 · Follow-on 0

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

1KOMMA5° ~€70M Equity financing Emerald AI $150M Series A Ubicquia $106M Series D

Voyager VenturesLatest Oct 8

Mana Battery · Undisclosed Seed financing (investment amount undisclosed)Lydian · $43M Series A

3rounds

1led

Climate tech 3

Seed 1, Series A 1, Series B 1

Oct 8, 2026

Details

New companies 3 · Follow-on 0

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

Mana Battery Undisclosed Seed financing (investment amount undisclosed)Lydian $43M Series A Moment Energy >$40M Series B

SiteGround CapitalLatest Oct 6

Type One Energy · $200M Series B Mazama Energy · $135M Series B

3rounds

0led

Climate tech 3

Series B 3

Oct 6, 2026

Details

New companies 3 · Follow-on 0

Stages: Series B 3

Type One Energy $200M Series B Mazama Energy $135M Series B Sage Geosystems $97M Series B

ExtantiaLatest Sep 29

Reverion · $175M Series B Epoch Biodesign · $12M Strategic

3rounds

0led

Climate tech 3

Seed 1, Series B 1, Undisclosed 1

Sep 29, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 1, Series B 1, Undisclosed 1

Reverion $175M Series B Epoch Biodesign $12M Strategic Renasens €10M Seed

Toyota VenturesLatest Sep 29

Hertha Metals · $133.7M Series A ALORA · Undisclosed Undisclosed

3rounds

0led

Agritech 1Climate tech 1Industrial tech 1

Series A 2, Undisclosed 1

Sep 29, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Undisclosed 1

Hertha Metals $133.7M Series A ALORA Undisclosed Undisclosed Avalanche Energy $29M Series A

Alumni VenturesLatest Sep 23

American Supercritical · $8M Pre-seed Apollo Atomics · $31M Seed

3rounds

0led

Climate tech 3

Pre-seed 1, Seed 1, Series A 1

Sep 23, 2026

Details

New companies 3 · Follow-on 0

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

American Supercritical $8M Pre-seed Apollo Atomics $31M Seed Alva Energy $33M Series A

Constellation Technology VenturesLatest Sep 21

Fluxnium, Inc. · $7M Seed Blue Energy · Undisclosed Strategic

3rounds

0led

Climate tech 3

Growth 1, Seed 1, Undisclosed 1

Sep 21, 2026

Details

New companies 3 · Follow-on 0

Stages: Growth 1, Seed 1, Undisclosed 1

Fluxnium, Inc. $7M Seed Blue Energy Undisclosed Strategic GridBeyond €12M Growth

Plug and PlayLatest Sep 21

Metris Energy · $5M Seed Isometric · $10M Series A

3rounds

0led

Climate tech 3

Pre-seed 1, Seed 1, Series A 1

Sep 21, 2026

Details

New companies 3 · Follow-on 0

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

Metris Energy $5M Seed Isometric $10M Series A Gyre Energy $1.3M Pre-Seed

SC Net Zero Ventures Fund ILatest Sep 21

Hydrosat · $10M Series B extension H2SITE · €42M Series B+

3rounds

0led

Climate tech 2Space tech 1

Series B 2, Series A 1

Sep 21, 2026

Details

New companies 3 · Follow-on 0

Stages: Series B 2, Series A 1

Hydrosat $10M Series B extension H2SITE €42M Series B+R3 Robotics €14M Series A

TDK VenturesLatest Sep 17

R3 Lithium · $15M Series A Aston Power · $20M Strategic

3rounds

0led

Climate tech 3

Seed 1, Series A 1, Undisclosed 1

Sep 17, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 1, Series A 1, Undisclosed 1

R3 Lithium $15M Series A Aston Power $20M Strategic Type One Energy $82.4M Seed (final close)

GoogleLatest Sep 15

Planted · $31.8M Funding Proxima Fusion · €411M Growth

3rounds

0led

Climate tech 3

Growth 1, Series C+ 1, Undisclosed 1

Sep 15, 2026

Details

New companies 3 · Follow-on 0

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

Planted $31.8M Funding Proxima Fusion €411M Growth Redwood Materials $425M Series E

Prelude VenturesLatest Sep 15

Branch Energy · $33M Series B FORM ENERGY · $750M Series G

3rounds

0led

Climate tech 3

Series B 2, Series C+ 1

Sep 15, 2026

Details

New companies 3 · Follow-on 0

Stages: Series B 2, Series C+ 1

Branch Energy $33M Series B FORM ENERGY $750M Series G Quaise Energy $134M Series B

Zero Infinity PartnersLatest Sep 15

Branch Energy · $33M Series B AGent Energy · $11M Seed

3rounds

0led

Climate tech 3

Seed 1, Series A 1, Series B 1

Sep 15, 2026

Details

New companies 3 · Follow-on 0

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

Branch Energy $33M Series B AGent Energy $11M Seed Halcyon $21M Series A

LeitmotifLatest Sep 10

Tavion · >SEK 540M Equity round + loan facility Proxima Fusion · €411M Growth

3rounds

1led

Climate tech 3

Undisclosed 2, Growth 1

Sep 10, 2026

Details

New companies 3 · Follow-on 0

Stages: Undisclosed 2, Growth 1

Tavion >SEK 540M Equity round + loan facility Proxima Fusion €411M Growth Epoch Biodesign $12M Strategic

British Business BankLatest Aug 26

Certain Energy · £10M Series A SatVu · £30M Series A

3rounds

1led

Climate tech 2Space tech 1

Series A 2, Undisclosed 1

Aug 26, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Undisclosed 1

Certain Energy £10M Series A SatVu £30M Series A Kraken Technologies £25M Undisclosed

Founders FundLatest Aug 26

Voya Energy · $35M Series A Panthalassa · $140M Series B

3rounds

—led

Climate tech 3

Series A 2, Series B 1

Aug 26, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Series B 1

Voya Energy $35M Series A Panthalassa $140M Series B Avalanche Energy $29M Series A

Earthshot VenturesLatest Aug 25

Emerald AI · $150M Series A Derapi · $7M Seed

3rounds

0led

Climate tech 2Fintech 1

Seed 1, Series A 1, Undisclosed 1

Aug 25, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 1, Series A 1, Undisclosed 1

Emerald AI $150M Series A Derapi $7M Seed Cloover $1.2B Series A+Debt

Emerson CollectiveLatest Aug 25

Emerald AI · $150M Series A GridCARE · $64M Series A

3rounds

0led

Climate tech 3

Series A 2, Series C+ 1

Aug 25, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 2, Series C+ 1

Emerald AI $150M Series A GridCARE $64M Series A X-energy $700M Series C-1 (final close)

Energize CapitalLatest Aug 25

Emerald AI · $150M Series A Axle Energy · $25M Series A

3rounds

2led

Climate tech 3

Series A 3

Aug 25, 2026

Details

New companies 3 · Follow-on 0

Stages: Series A 3

Emerald AI $150M Series A Axle Energy $25M Series A Halcyon $21M Series A

TechstarsLatest Aug 24

Boldr · $5M Seed+Volteum · €2.5M Seed

3rounds

—led

Climate tech 1Defense tech 1Enterprise software 1

Seed 2, Series A 1

Aug 24, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 2, Series A 1

Boldr $5M Seed+Volteum €2.5M Seed Seasats $20M Series A

Unconventional VenturesLatest Aug 24

Boldr · $5M Seed+AIRMO · €5M Seed

3rounds

0led

Climate tech 2Biotech 1

Seed 2, Series A 1

Aug 24, 2026

Details

New companies 3 · Follow-on 0

Stages: Seed 2, Series A 1

Boldr $5M Seed+AIRMO €5M Seed Octarine Bio €5M Series A extension

“—” 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.