Mercury Fund | Activity | F4

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Team Portfolio Raise Champions Essays

F4/Mercury Fund/Activity

Mercury Fund Activity

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

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3 essays· AUG 2026Show all

Essay

Published Mercury's core vertical AI thesis: value concentrates first at the infrastructure layer, then to founders with deep domain expertise.

Our Vertical AI Thesis: Why Domain Expertise Wins the Next Era of AI

Mercury Fund

mercuryfund.com

Added recently

Essay

Founder spotlight interview with Venus Aerospace co-founders Sassie and Andrew Duggleby on building rotating detonation rocket engines.

Venus Aerospace

Venus Aerospace Mercury Fund

mercuryfund.comAUG 11, 2026

AUG 11, 2026

Essay

Founder spotlight interview with Signal Advisors CEO Patrick Kelly on building the operating system and working-capital infrastructure for independent financial advisors.

Signal Advisors

Signal Advisors Mercury Fund

mercuryfund.comAUG 3, 2026

AUG 3, 2026

Milestone

Portfolio company Buildforce, backed by Mercury since pre-seed, raised a $10M Series A to expand its electrician staffing platform nationally.

BuildForce

BuildForce Mercury Fund

prnewswire.comJUL 28, 2026

JUL 28, 2026

Essay

Published a thesis essay arguing the open-weights debate validates Mercury's vertical AI thesis: right-sized models, proprietary domain data, and application-layer competition.

Open Weights and the Era of Vertical AI

Pie Collide Nectar Social Mercury Fund

mercuryfund.comJUL 27, 2026

JUL 27, 2026

Investment

Led Venus Aerospace's $91M Series B for its rotating detonation rocket engine propulsion platform, with Lockheed Martin Ventures.

Venus Aerospace

Venus Aerospace Mercury Fund

mercuryfund.comJUL 21, 2026

venusaero.com

JUL 21, 2026

Milestone

Portfolio company Pie, backed by Mercury Fund since a pre-seed incubation investment, closed a $19.5M Series A led by Lightspeed, bringing total funding to $23.7M.

Pie

Pie Mercury Fund

mercuryfund.comJUN 2026

JUN 2026

Essay

Recapped the 2026 portfolio CEO retreat covering AI transformation, board management, growth-stage fundraising, and exit readiness.

Building for What's Next: Lessons from our 2026 CEO Retreat

Mercury Fund

mercuryfund.comMAY 28, 2026

MAY 28, 2026

Milestone

Portfolio company Nectar Social, backed by Mercury since seed, raised a $30M Series A led by Menlo Ventures' Anthology Fund.

Nectar Social

Nectar Social Mercury Fund

techcrunch.comMAY 16, 2026

MAY 16, 2026

Investment

Follow-on participation in Nectar Social's $30M Series A led by Menlo Ventures, alongside True Ventures and Google Ventures.

Nectar Social

Nectar Social Mercury Fund

axios.comMAY 14, 2026

mercuryfund.com

MAY 14, 2026

Milestone

Portfolio company Plasma reached $500M pre-money valuation with Founders Fund investment and $1B+ in stablecoin deposits.

Plasma

Plasma Mercury Fund

mercuryfund.com

Added recently

Milestone

Portfolio company Cart.com raised $50M at $1.6B valuation and achieved full-year 2025 sales bookings goal in Q2.

Cart.com

Cart.com Mercury Fund

mercuryfund.com

Added recently

News

Announced a partnership with More Than Capital to expand founder support and help portfolio companies scale in the US and internationally.

Partnership with More Than Capital

Mercury Fund

mercuryfund.comMAY 2026

MAY 2026

Investment

Co-led OpenTrade's $17M strategic round alongside Notion Capital to expand stablecoin yield infrastructure after the company topped $200M in TVL.

OpenTrade

OpenTrade Mercury Fund

theblock.coMAY 2026

mercuryfund.com

MAY 2026

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