Company lists · Data refreshed September 2026

Top 25 Co-investment firms worldwide

RevenueBase identified 16,017 co-investment firms worldwide as of September 2026 and tracks 152,875 professional contacts across them, including 58,375 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers co-investment firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026. Country and city lists for co-investment firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
16,017Companies
152,875Contacts tracked
58,375Verified emails
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The 25 largest co-investment firms worldwide

Ranked by team size
Top 25 of 16,017 co-investment firms worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to co-investment firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceMiami, FL, United StatesHQ checked Sep 27, 20261,001-5,0004,261 contacts →

Partial evidence

“Our ambition at Citadel is to be the most successful investment firm of all time.”

Source: RevenueBase Database · checked Sep 27, 2026
2Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 20261,001-5,0002,940 contacts →

Partial evidence

“Nuveen is a global investment leader, managing public and private assets for clients around the world and on behalf of TIAA, our parent company and one of the world’s largest…”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceBoston, MA, United StatesHQ checked Sep 27, 20261,001-5,0002,068 contacts →

Partial evidence

“Founded in 1984, Bain Capital is one of the world’s leading private investment firms.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 20265,001-10,0001,615 contacts →

Indirect evidence

“IAC builds companies.”

Source: RevenueBase Database · checked Sep 27, 2026
5Partial evidence6th October City, EgyptHQ checked Sep 27, 202610001+1,425 contacts →

Partial evidence

“As a distinguished investment company with a robust international footprint, Raya Holding for Financial Investments has experienced remarkable growth driven by a resilient…”

Source: RevenueBase Database · checked Sep 27, 2026
6Indirect evidenceBoston, MA, United StatesHQ checked Sep 27, 20261,001-5,0001,353 contacts →

Indirect evidence

“HarbourVest is an independent, global private markets firm with over 43 years of experience and $161 billion assets under management as of December 31, 2025.”

Source: RevenueBase Database · checked Sep 27, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 20261,001-5,0001,323 contacts →

Partial evidence

“StepStone Group (Nasdaq: STEP) is a global private markets investment firm focused on providing customized investment solutions and advisory and data services to our clients.”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceMiami, FL, United StatesHQ checked Sep 27, 2026501-1,0001,301 contacts →

Indirect evidence

“H.I.G.”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceChicago, IL, United StatesHQ checked Sep 27, 2026501-1,000985 contacts →

Partial evidence

“LaSalle is one of the world's leading investment managers.”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceBoston, MA, United StatesHQ checked Sep 27, 2026201-500881 contacts →

Indirect evidence

“TA is a leading global private equity firm focused on scaling growth in profitable companies.”

Source: RevenueBase Database · checked Sep 27, 2026
11Indirect evidenceAustin, TX, United StatesHQ checked Sep 27, 2026501-1,000839 contacts →

Indirect evidence

“Vista Equity Partners (Vista) is a leading global technology investor specializing in software.”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidenceUnited StatesHQ checked Sep 27, 20261,001-5,000710 contacts →

Partial evidence

“Starwood Capital Group is a private investment firm with a primary focus on global real estate.”

Source: RevenueBase Database · checked Sep 27, 2026
13Partial evidenceParis, GermanyHQ checked Sep 27, 2026201-500624 contacts →

Partial evidence

“Eurazeo is a leading global investment company, with a diversified portfolio of €40 billion in assets under management, including €31 billion from third parties, invested in 600…”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 20261,001-5,000613 contacts →

Indirect evidence

“Established in the U.S.”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceMinnetonka, MN, United StatesHQ checked Sep 27, 2026n/a604 contacts →

Indirect evidence

“Carlson's roots are set in 1938, when Curtis L.”

Source: RevenueBase Database · checked Sep 27, 2026
16Indirect evidenceUnited StatesHQ checked Sep 27, 202651-200571 contacts →

Indirect evidence

“Investissez aux côtés d’Anthony Bourbon Dans les startups de demain À partir de 500€ par projet.”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceWest End, United KingdomHQ checked Sep 27, 2026201-500553 contacts →

Indirect evidence

“Bridgepoint Group is one of the world's leading mid-market investors, specialising in private equity, infrastructure, credit, secondaries and private wealth.”

Source: RevenueBase Database · checked Sep 27, 2026
18Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500547 contacts →

Indirect evidence

“Pantheon has been at the forefront of private markets investing for more than 40 years, earning a reputation for providing innovative solutions covering the full lifecycle of…”

Source: RevenueBase Database · checked Sep 27, 2026
19Indirect evidenceBoston, MA, United StatesHQ checked Sep 27, 2026501-1,000546 contacts →

Indirect evidence

“Founded in Arrowstreet Capital is an independent private partnership based in Boston, Massachusetts.”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceRio De Janeiro, BrazilHQ checked Sep 27, 2026501-1,000488 contacts →

Indirect evidence

“With nearly three decades of experience and twelve offices across Latin America and the United States, our expertise spans Private Equity, Credit, Real Estate, Infrastructure…”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026n/a469 contacts →

Indirect evidence

“We identify the hidden value in companies that are often in challenging or complex situations, but have a strong core offering.”

Source: RevenueBase Database · checked Sep 27, 2026
22Indirect evidenceManchester, NH, United StatesHQ checked Sep 27, 202651-200411 contacts →

Indirect evidence

“Founded in 2014, we’re America’s largest venture firm for individual investors and VC investing partner to over individuals and institutions.”

Source: RevenueBase Database · checked Sep 27, 2026
23Partial evidenceGreenwich, CT, United KingdomHQ checked Sep 27, 2026201-500397 contacts →

Partial evidence

“L Catterton is a market-leading consumer-focused investment firm, managing approximately $39 billion of equity capital across three multi-product platforms: private equity…”

Source: RevenueBase Database · checked Sep 27, 2026
24Indirect evidenceMenlo Park, CA, United StatesHQ checked Sep 27, 202651-200388 contacts →

Indirect evidence

“Sequoia helps daring founders build legendary companies from idea to IPO and beyond.”

Source: RevenueBase Database · checked Sep 27, 2026
25Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 202651-200385 contacts →

Partial evidence

“Founded in 1978, CD & R is an investment firm with an investment strategy predicated on building stronger, more profitable businesses.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 16,017 co-investment firms worldwide

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Co-investment firms worldwide at a glance

As of Sep 27, 2026
38.2%Verified-email coverage
9.5Average contacts per company
1-10Median size (employees)
5.9%Largest-city concentration · New York
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
11,261
11-50
3,646
51-200
767
201-500
174
501-1,000
65
1,001-5,000
56
5,001-10,000
11
10001+
17

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among co-investment firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for co-investment firms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “co-investment firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names co-investment firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among co-investment firms, and records with no verified work email.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 58,375 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Co-investment firms by location

81 lists · largest first

Every Co-investment firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names co-investment firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many co-investment firms are there worldwide?

RevenueBase identified 16,017 co-investment firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Citadel, headquartered in Miami, tops this list with the largest team on record.

Which country has the most co-investment firms?

The United States leads with 6,360 companies, followed by the United Kingdom (895) and Canada (607). Every co-investment firms list by country and city is linked on this page.

Which city has the most co-investment firms?

New York leads with 945 headquartered companies, followed by London (656) and San Francisco (268).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 58,375 verified decision-maker contacts tracked across these 16,017 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.