Giant Ventures | Activity | F4

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Giant Ventures Activity

Every public signal F4 has attached to this firm, with sources and cross-entity links.

Types

Time range

Milestone

Giant-backed CuspAI announced a $450M Series B at a $2.6B valuation, led by Kleiner Perkins and NEA with participation from Bezos Expeditions. Giant backed CuspAI at seed and has invested six times overall.

CuspAI

CuspAI Giant Ventures

giant.vcJUL 2026

JUL 2026

Essay

Published a quarterly letter arguing that AI market exuberance and durable infrastructure buildout can coexist.

Quarterly Letter: the Bubble and the Engine

Giant Ventures

giant.vc

Added recently

Essay

Published a quarterly letter on European sovereign infrastructure across energy, manufacturing, digital and financial systems.

Giant Ventures Quarterly Letter: The European Stack

Giant Ventures

giant.vc

Added recently

Team Change

Halle Tecco, founder of Rock Health and healthcare thought leader, joined Giant Ventures as Board Partner to lead healthcare investments for Giant's growth fund.

Halle Tecco joins Giant Ventures as Board Partner

Giant Ventures

giant.vcAPR 2026

APR 2026

Essay

Giant Ventures published a call for startups outlining its 2026 US Healthcare Thesis, covering AI diagnostics, proactive care, precision medicine, and accessible healthcare delivery. Authored by Halle Tecco, Board Partner.

Giant Ventures 2026 US Healthcare Thesis

Giant Ventures

giant.vcJAN 2026

JAN 2026

Essay

Detailed thesis on AI's application layers within climate, health, and inclusive capitalism themes, emphasizing discovery, automation, augmentation, and personalization.

Quarterly Letter: How Giant Will Invest Behind the AI Wave

Giant Ventures

giant.vcJAN 2026

JAN 2026

New Fund

Launched $250M in new funds: $100M seed fund backing 25 early-stage companies and $150M climate-focused growth fund.

Two new funds: $100M Seed + $150M Climate Growth

Giant Ventures

giant.vcJAN 2026

JAN 2026

Milestone

Giant portfolio company Radiant raised $300M+ at a valuation over $1.8B for its portable nuclear microreactor. Giant doubled down from its Growth fund. Co-investors include a16z and Founders Fund.

Radiant Nuclear

Radiant Nuclear Giant Ventures

giant.vcDEC 2025

DEC 2025

Milestone

Giant's portfolio companies collectively raised $1 billion in December 2025 alone, marking extraordinary milestone achievements.

Giant Portfolio

Giant PortfolioGiant Ventures

giant.vcDEC 2025

DEC 2025

5 investments· AUG 2025 – DEC 2025Show all

Investment

Cambridge AI spinout Matta raised $14M to power sentient factories with AI manufacturing foundation models.

Matta

MattaGiant Ventures

giant.vcDEC 2025

DEC 2025

Investment

Giant doubled down with $300M+ Series B at $1.8B+ valuation for new nuclear power. Co-investors include a16z and Founders Fund.

Radiant

Radiant Giant Ventures

giant.vcDEC 2025

DEC 2025

Investment

Participated in CuspAI's $100M Series A for AI-powered materials discovery.

CuspAI

CuspAI Giant Ventures

finsmes.comSEP 11, 2025

marriottharrison.com

SEP 11, 2025

Investment

Giant led Haven Energy's $40M Series B to rebuild America's power system with distributed energy capacity.

Haven Energy

Haven Energy Giant Ventures

giant.vcSEP 2025

SEP 2025

Investment

Invested in amass's EUR1.4M financing to build a scientific intelligence platform for life sciences.

amass

amass Giant Ventures

siliconcanals.comAUG 22, 2025

AUG 22, 2025

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