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Power Law company profile

Substack

Consumer Services · San Francisco, United States · Founded 2017 Unicorn

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Valuation
$1–2.5B
Latest valuation · 2026
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Revenue
$10–50M
Latest reported FY
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Headcount
2–5k
Current team size
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Featured in Unicorn$1B+ valuation tier · Power Law dataset 2026 $1B+ revenueColt · Power Law growth-stage

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Investors

26 investors on Substack's cap table

Sourced from Dealroom's funding history. Investor profile links are shown where available.

Seed 16 investors entered at this stage
Fifty Years
UpHonest Capital
Zachary Ginsburg
Wei Guo
Brad Flora
Omeed Malik
ZhenFund
VentureSouq
Justin Waldron
The Chernin Group
Emmett Shear
Y Combinator
Naval Ravikant
Mark Pincus
FundersClub
Haroon Mokhtarzada
Series A 1 investor entered at this stage
Andreessen Horowitz
Series B+ 9 investors entered at this stage
General Catalyst
TRITON FUNDS
Azeem Azhar
Rich Paul
Audrey Gelman
Bill Bishop
Wefunder
Jens Grede
Bond

Substack mafia

Startups founded by Substack alumni

Former Substack employees who went on to start their own companies. Sorted by Dealroom signal score.

Reveal HealthTechEst. 2023
Salim AfsharUnited States
Signal score88
Substrate LabEst. 2023
Rob CheungUnited States
Signal score84
ChronicleEst. 2021
Tejas GawandeUnited States
Signal score84
PassionfrootEst. 2021
Jennifer PhanGermany
Signal score76
PlaycoEst. 2020
Justin WaldronUnited States
Signal score69
LexEst. 2023
Nathan BaschezUnited States
Signal score51

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Global footprint

Where Substack has talent and traffic

AI talent share
0.4% of workforce is AI talent
(14 of 3,290 staff)
Core AI40.12%
Other AI100.3%
Non-AI workforce3,27699.57%
Workforce by country
69 countries with
team presence
🇺🇸 United States45.8%
🇬🇧 United Kingdom11.2%
🇮🇳 India9%
🇳🇬 Nigeria4.1%
🇨🇦 Canada4.1%
Top 5 of 69 shown
Web traffic by country
170M monthly visits
across markets
🇺🇸 United States55.3%
🇬🇧 United Kingdom7.5%
🇨🇦 Canada5.3%
🇦🇺 Australia3%
🇮🇳 India2.7%
Top 5 markets shown

Sentiment on X

What X is saying about Substack

An AI-synthesized read of the highest-engagement posts about Substack on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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