Sam Altman

Angel · Mountain View, United States

#139 Investor Ranking 2026 Top 1% of investors worldwide

Pioneering the movement toward artificial general intelligence

121 Portfolio companies+82% in 5 years

21 Unicorns

4 Decacorns

146 Investments

Jan 2026 Last investment

01 · Knowledge graph

News Musk loses OpenAI lawsuit as jury says he waited too long to sue May 19, 2026

02 · Biggest holdings

Sam Altman’s biggest current holdings.

The most valuable companies Sam Altman still holds, ordered by Dealroom’s latest valuation. Companies that have been acquired or gone public are in Exits instead. Dealroom has no parsed shareholder register for Sam Altman, so the size of each stake isn’t shown.

#CompanyValuation

1 OpenAICenticorn · Enterprise Software · USA $852B
2 StripeCenticorn · Fintech · USA $159B
3 Helion EnergyDecacorn · Energy · USA $15.5B
4 NeuralinkUnicorn · Health · USA $9.7B
5 Retro BiosciencesUnicorn · Health · USA $5.0B
6 CoalitionUnicorn · Security · USA $5.0B
7 PatreonUnicorn · Music · USA $4.0B
8 LatticeUnicorn · Jobs Recruitment · USA $3.0B
9 QuoraUnicorn · Media · USA $2.0B
10 Wave Mobile MoneyUnicorn · Fintech · Senegal $1.7B
11 Formation BioUnicorn · Health · USA $1.5B
12 Boom SupersonicUnicorn · Transportation · USA $1.2B

Unicorns and thoroughbreds Sam Altman has backed and still holds, at Dealroom’s latest valuation. Sam Altman also appears inside investor groups in Boom Supersonic, Coalition, Neuralink, OpenAI, Quora, World, where a standalone stake isn’t disclosed. See the underlying shareholder registers on Dealroom →

03 · Exits

Sam Altman’s biggest exits.

Portfolio companies that IPO’d or were acquired at $1B+, with the valuation recorded at exit and — for those still public — their value today. Exit events come from each company’s funding-round history; entry stage from Sam Altman’s transaction record.

$6.4B IPO · 2024

Entered Series B+Now $28BMedia

Oklo

$850M IPO · 2023

Entered SeedNow $6.0BEnergy

Opendoor

$4.8B IPO · 2020

Entered Series ANow $4.4BReal Estate

Asana

$4.4B IPO · 2020

Entered Series B+Now $2.0BEnterprise Software

Cruise

$1.0B acquisition · 2016

Entered Series ARobotics

04 · Portfolio analysis

Where Sam Altman’s portfolio is concentrated.

Distribution of portfolio companies by headquarters country, sector, entry stage and current growth stage. Across all 121 portfolio companies. "Stage entered" is the first priced round the investor joined, derived from the investor’s transaction history.

By countryCount

USA130
Canada3
UK3
Israel2
Italy2
Germany1
Ghana1
India1
Ireland1
Mexico1
Netherlands1
New Zealand1

By sectorCount

Enterprise Software29
Health23
Fintech19
Media15
Education12
Transportation12
Jobs Recruitment9
Marketing7
Robotics6
Energy5
Food5
Real Estate5

By stage enteredCount

Seed70
Series A30
Series B+18

By growth stageCount

Breakout Stage57
Early Growth46
Late Growth45

05 · Portfolio market map

Inside Sam Altman’s portfolio.

The 60 highest-funded portfolio companies, of 121 tracked.

OpenAI

Enterprise Software · Centicorn

Real Estate · Unicorn

Transportation · Unicorn

Transportation · Unicorn

$1.0B

Asana

Enterprise Software · Unicorn

$2.0B

SingleStore

Enterprise Software · Unicorn

Aspen Neuroscience

Health

$738M

Lattice

Jobs Recruitment · Unicorn

BRINC

Security

$500M

LE TOTE

Fashion

$140M

Meter

Telecom · Unicorn

$1.0B

Humane Ai

Legal

$400M

Humane

Consumer Electronics

$400M

Titan

Fintech

$400M

Ashvattha Therapeutics

Health

$345M

Meanwhile

Fintech

$328M

Coco

Food

$320M

Airlift Technologies

Transportation

Alt Platform

Fintech

$325M

Campus

Education

$184M

Panorama Education

Education

$300M

Slope

Fintech

$130M

Science Exchange

Health

$80M

Codecademy

Education

$160M

Lob

Enterprise Software

$200M

Atrium

Legal

Warp

Enterprise Software

$200M

Change.org

Legal

$120M

PlanGrid

Real Estate

$875M

Galy

Fashion

$132M

Motion

Media

$550M

TrueNorth

Transportation

$200M

Roboflow

Robotics

$160M

Exowatt

Energy

$140M

TripleByte

Telecom

$140M

Vital Bio

Health

$192M

Verifiable

Enterprise Software

$108M

Nautilus Labs

Transportation

$136M

Routable

Fintech

$120M

Rain

Semiconductors

$125M

Uncommon

Food

$120M

Magrathea

Energy

$96M

Terraformation

Energy

$150M

06 · Portfolio founders

Where Sam Altman’s portfolio founders come from.

147 founders across the 100 highest-funded portfolio companies — by current location, university attended, and the companies they worked at before founding. Sourced from the founder records the API links to each portfolio company.

LocationCount