Est. 2014 · $1.4B AUM · Menlo Park
Capital for founders
who think in decades.
Atrium is a $1.4B early-stage venture firm backing rare founders who are building institutions — not startups. We lead seed and Series A rounds in companies with twenty-year horizons and a bias for quiet work.
Scroll — Portfolio
Fund IV
MMXXVI Vintage
— Portfolio · II
Forty-seven companies.
Eight we led.
01
Helix Protocol
DeFi
Seed
2023
Led
02
Neuron
Developer tools
Series A
2024
Led
03
Pulse Health
Telehealth
Seed
2022
Led
04
Axiom
Fintech infrastructure
Series A
2025
Led
05
Solace
Climate hardware
Seed
2023
Participated
06
Monolith Studio
Architecture tools
Seed
2024
Led
07
Orbit Motors
EV + hypercar
Series A
2025
Led
08
Aurora Maison
Luxury retail
Seed
2022
Led
— Thesis · III
“The great companies are built by founders who think in decades, not quarters. We wait for those people, and then we wait for them to let us in.”
Elena Park & David Morgan
Founding partners · 2014
— Submit a deck · IV
We read
every submission.
We reply within seven days. No warm intros required. No signalling games. Send a deck or a one-page memo — whichever feels truer to how you think.