X
X.
Formerly known as "Twitter", X is a microblogging and social networking service on which users post and interact with messages
At a glance
- Founded
- 2006
- Headquarters
- Bastrop, United States
- Listing
- IPO 2013
- Sector
- Consumer Services
- Power Law
- Decacorn$10B+ valuation tierThoroughbred$100M+ revenue
Research & analysis
News
Court lets Twitter rival keep 'tweet' as judge finds X abandoned the mark
Sep 6, 2026
News
X shuts down seven-year-old Nitter with cease-and-desist letters
Aug 26, 2026
News
X Money launches in the US for paying subscribers
Jul 28, 2026
Market map
Non-Fungible Token (NFT) startups
Market map
NYC AI Map by Lux Capital
Market map
Next-gen social media startups
Latest news
Press, funding announcements and product moves mentioning X..
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Series A11 investors entered at this stage
Union Square Ventures- BPBrian Pokorny
- DMDave Morin
- DCDick Costolo
- GYGreg Yaitanes
Chris Sacca
SV Angel
CRV
Marc Andreessen
Ron Conway- DSDavid Sacks
Series B and later14 investors entered at this stage
Slow Ventures- DSDST Global Solutions
Kleiner Perkins
Insight Partners
Benchmark- TFTimothy Ferriss
- 1C1789 Capital
- MVMolten Ventures
IVP
Morgan Stanley- KRKevin Rose
- EMElon Musk
Bezos Expeditions- DPDarsana Capital Partners
Source: Dealroom Talent Intelligence.
Alumni founders
Former X. employees who went on to found companies, sorted by Dealroom signal score.
XAxAIEst. 2023
SISierraEst. 2023
Bret TaylorUnited States
TETempoEst. 2025
Matt HuangUnited States
OPOpenSpaceEst. 2017
Michael FleischmanUnited States
PSParallel Web SystemsEst. 2023
Parag AgrawalUnited StatesGlobal footprint
team presence
across markets
Patents
1,635 active patent families included in this estimate.
A patent family groups patent filings for the same invention. Source: Dealroom · PatSnap.
Investments and acquisitions
Disclosed deals where X. was the backer or acquirer, 2008–2026. Toggle between venture rounds, M&A, or both. The map below is grouped by the target company's sector — the colored pill on each chip is the round type.
84 deals across X.'s capital deployment.
Where the deals concentrate by sector, stage, and decade.
Where X. deploys vs peers
Each axis is a Dealroom topic tag — picked from the cluster's most-tagged themes. Values are normalized per axis: the peer with the highest tag-coverage on that axis sits at the edge, others scale relative to them. Toggle between M&A, venture, or both.
X.'s portfolio, mapped.
Each chip is one company. Pill colour shows round type — green for Seed, blue for Series A, purple for B/C+, pink for late-stage, amber for M&A. Bigger sectors keep their full list behind “+ N more”.
Market sentiment
An AI-synthesised read of the highest-engagement posts about X. 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 X. on the full Dealroom platform
Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.