Company lists · Data refreshed September 2026

Top 25 Portfolio company consulting firms worldwide

Name: Portfolio company consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 26,603 companies tracked

RevenueBase identified 26,603 portfolio company consulting firms worldwide as of September 2026 and tracks 204,429 professional contacts across them, including 71,470 with verified work emails. The United States is the largest market and London the largest hub.

This list covers portfolio company consulting 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 29, 2026. Country and city lists for portfolio company consulting 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 29, 2026 86% judged on-target in blind review

26,603Companies

204,429Contacts tracked

71,470Verified emails

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The 25 largest portfolio company consulting firms worldwide

Ranked by team size

Top 25 of 26,603 portfolio company consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to portfolio company consulting 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ey-Parthenon	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	10001+	17,070 contacts →
	Indirect evidence “Our unique combination of transformative strategy, transactions and corporate finance delivers real-world value – solutions that work in practice, not just on paper.” Source: RevenueBase Database · checked Sep 29, 2026
2	Alvarez & Marsal	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	10001+	13,099 contacts →
	Indirect evidence “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Source: RevenueBase Database · checked Sep 29, 2026
3	L.E.K. Consulting	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	1,001-5,000	4,093 contacts →
	Indirect evidence “L.E.K.” Source: RevenueBase Database · checked Sep 29, 2026
4	Lazard	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,912 contacts →
	Indirect evidence “Founded in 1848, Lazard is the preeminent financial advisory and asset management firm, with operations in North and South America, Europe, the Middle East, Asia, and Australia.” Source: RevenueBase Database · checked Sep 29, 2026
5	TENEO	Indirect evidence	New York City, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,930 contacts →
	Indirect evidence “Teneo is the global CEO advisory firm.” Source: RevenueBase Database · checked Sep 29, 2026
6	Lincoln International	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,489 contacts →
	Partial evidence “Lincoln International, Inc.(NYSE: LCLN) is a trusted investment banking advisor to business owners and senior executives of leading private equity firms and their portfolio…” Source: RevenueBase Database · checked Sep 29, 2026
7	Riveron	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,160 contacts →
	Indirect evidence “With over 1,200 professionals across 18 international offices, Riveron delivers tailored solutions for CFOs, private equity firms, and key stakeholders.” Source: RevenueBase Database · checked Sep 29, 2026
8	Advent	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	501-1,000	1,025 contacts →
	Indirect evidence “Advent is a leading global private equity investor committed to working in partnership with management teams, entrepreneurs, and founders to help transform businesses.” Source: RevenueBase Database · checked Sep 29, 2026
9	Eight Advisory	Partial evidence	Paris, FranceHQ checked Sep 29, 2026	501-1,000	895 contacts →
	Partial evidence “Eight Advisory, Europe's leading independent advisory firm specialising in financial, operational and strategy consulting, is involved in transactions, restructuring and…” Source: RevenueBase Database · checked Sep 29, 2026
10	Perella Weinberg	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	883 contacts →
	Indirect evidence “Perella Weinberg is a leading global independent financial services firm, founded in 2006 to address the need for experienced, trusted and unconflicted advice in the financial…” Source: RevenueBase Database · checked Sep 29, 2026
11	TA Associates	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	201-500	881 contacts →
	Indirect evidence “TA is a leading global private equity firm focused on scaling growth in profitable companies.” Source: RevenueBase Database · checked Sep 29, 2026
12	Accuracy	Partial evidence	Paris, SingaporeHQ checked Sep 29, 2026	501-1,000	868 contacts →
	Partial evidence “Accuracy is a wholly independent international consulting firm providing advice to company management and shareholders for their strategic or critical decisions, notably in…” Source: RevenueBase Database · checked Sep 29, 2026
13	FRP Advisory	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	501-1,000	731 contacts →
	Indirect evidence “FRP is a leading national business advisory firm.” Source: RevenueBase Database · checked Sep 29, 2026
14	デロイトトーマツコンサルティング(合同)	Partial evidence	千代田区, JapanHQ checked Sep 29, 2026	501-1,000	696 contacts →
	Partial evidence “is a management consulting company based out of, Japan.” Source: RevenueBase Database · checked Sep 29, 2026
15	Centerview Partners	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	693 contacts →
	Indirect evidence “Centerview Partners is a premier provider of independent investment-banking advisory services.” Source: RevenueBase Database · checked Sep 29, 2026
16	Hilco Global	Indirect evidence	Northbrook, IL, United StatesHQ checked Sep 29, 2026	501-1,000	528 contacts →
	Indirect evidence “Hilco Global is a privately held diversified financial services company and the world’s preeminent authority on maximizing the value of assets for both healthy and distressed…” Source: RevenueBase Database · checked Sep 29, 2026
17	Virtual Connection	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 29, 2026	1,001-5,000	504 contacts →
	Indirect evidence “A Virtual Connection é uma empresa empreendedora, com espírito inovativo que constantemente busca alavancar resultados financeiros em nossos clientes através de ferramentas como…” Source: RevenueBase Database · checked Sep 29, 2026
18	Benchmark International	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 29, 2026	201-500	503 contacts →
	Indirect evidence “Benchmark International is a global M&A firm that provides business owners with creative, value-maximizing solutions for growing and exiting their businesses.” Source: RevenueBase Database · checked Sep 29, 2026
19	Sc&h	Partial evidence	Hunt Valley, MD, United StatesHQ checked Sep 29, 2026	201-500	500 contacts →
	Partial evidence “SC & H is an employee-owned, global consulting and financial services firm driving business, technology, and teams forward.” Source: RevenueBase Database · checked Sep 29, 2026
20	GVA	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	51-200	499 contacts →
	Indirect evidence “Créé en 1975, GVA est composé de 80 personnes, pour près de 10 millions de chiffre d’affaires.” Source: RevenueBase Database · checked Sep 29, 2026
21	Privet Capital LLP	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	n/a	469 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 29, 2026
22	APAX	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	201-500	438 contacts →
	Indirect evidence “Apax Partners LLP ("Apax") is a global private equity advisory firm investing in mid-market businesses across the Technology, Services, and Internet/Consumer sectors.” Source: RevenueBase Database · checked Sep 29, 2026
23	Valueonshore 'vos' Advisors	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 29, 2026	501-1,000	429 contacts →
	Indirect evidence “Valueonshore (‘VOS’) Advisors is a global business advisory services firm of Big 4 alumni and industry executives.” Source: RevenueBase Database · checked Sep 29, 2026
24	Kaiser Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	51-200	397 contacts →
	Indirect evidence “Kaiser Associates was founded in 1981 with a simple yet powerful mission: to help executives make more informed strategic and operational decisions by incorporating external…” Source: RevenueBase Database · checked Sep 29, 2026
25	Cd&r	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	385 contacts →
	Indirect 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 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: portfolio company consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names portfolio company consulting firms.
Partial evidence: Its own public description names part of portfolio company consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name portfolio company consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 26,603 portfolio company consulting firms worldwide

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Portfolio company consulting firms worldwide at a glance

As of Sep 29, 2026

35.0%Verified-email coverage

7.7Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

20,417

11-50

5,003

51-200

798

201-500

184

501-1,000

1,001-5,000

5,001-10,000

10001+

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 portfolio company consulting 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 portfolio company consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “portfolio company consulting 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 portfolio company consulting 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 portfolio company consulting 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, 71,470 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 29, 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.

Portfolio company consulting firms by location

135 lists · largest first

Every Portfolio company consulting 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 portfolio company consulting 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 portfolio company consulting firms are there worldwide?

RevenueBase identified 26,603 portfolio company consulting 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?

Ey-Parthenon, headquartered in London, tops this list with the largest team on record.

Which country has the most portfolio company consulting firms?

The United States leads with 7,862 companies, followed by the United Kingdom (1,764) and France (1,100). Every portfolio company consulting firms list by country and city is linked on this page.

Which city has the most portfolio company consulting firms?

London leads with 889 headquartered companies, followed by New York (801) and Sao Paulo (483).

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 71,470 verified decision-maker contacts tracked across these 26,603 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 29, 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.