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Substack
Makes it simple for a writer to start a subscription publication
Research & analysis
Latest news
Press, funding announcements and product moves mentioning Substack.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed15 investors entered at this stage
Wei Guo
Fifty Years
The Chernin Group- ESEmmett Shear
- JWJustin Waldron
Naval Ravikant- HMHaroon Mokhtarzada
- MPMark Pincus
Brad Flora- OMOmeed Malik
Y Combinator
VentureSouq
UpHonest Capital
ZhenFund
FundersClub
Series A1 investor entered at this stage
Series B and later9 investors entered at this stage
Wefunder
Bond- AGAudrey Gelman
- TFTRITON FUNDS
General Catalyst- JGJens Grede
- AAAzeem Azhar
- RPRich Paul
- BBBill Bishop
Ownership
Estimated cap table from Dealroom's shareholder data — share of equity by holder. Stakes as last recorded by Dealroom (2026). Percentages are indicative.
Some investors are hidden on this public profile. See the full cap table on Dealroom →
Source: Dealroom Talent Intelligence.
Alumni founders
Former Substack employees who went on to found companies, sorted by Dealroom signal score.
RHReveal HealthTechEst. 2023
Salim AfsharUnited States
Rob CheungUnited States
Tejas GawandeUnited States
PAPassionfrootEst. 2021
Jennifer PhanGermany
PLPlaycoEst. 2020
Justin WaldronUnited StatesGlobal footprint
team presence
across markets
Market sentiment
An AI-synthesised read of the highest-engagement posts about Substack on X, ranked by likes and reposts, corporate channels excluded.
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
See Substack on the full Dealroom platform
Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.