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Mercari
eCommerce & Marketplaces · Tokyo, Japan · Founded 2013 · IPO 2018 Unicorn
Mercari mafia
Startups founded by Mercari alumni
Former Mercari employees who went on to start their own companies. Sorted by Dealroom signal score.
Ren ItoJapan
John LagerlingUnited States
Koki IdeJapan
Dani ArnaoutUnited States
Yosuke IshikawaJapan
Kyosuke TakahashiJapan
Kosuke KuzuokaJapan
Tatsuya YagiJapan
Tamiki SugiyamaJapan
Jemma StaceyUnited Kingdom
Sota OharaJapanGlobal footprint
Where Mercari has talent and traffic
(10 of 1,784 staff)
team presence
across markets
Patent intelligence
$8M patent portfolio · 111 active families
Where Mercari concentrates vs peers
Each axis is a top-10 topic across Mercari and its closest peers. #1 = 100, #10 = 10, absent = 0.
Source: Dealroom Patent Intelligence · Patsnap. Request a demo for the full per-sub-category breakdown, individual records, and quality-score history.
Capital deployed
Mercari's 19 investments and acquisitions.
Every disclosed deal where Mercari appeared as a backer or acquirer, 2016–2025. 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.
19 deals across Mercari's capital deployment.
Where the deals concentrate by sector, stage, and decade.
02 · Portfolio market map
Mercari'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
What the market is saying about Mercari
An AI-synthesized read of the highest-engagement posts about Mercari 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
See Mercari on the full Dealroom platform
Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.