Company lists · Data refreshed September 2026

Top 25 Operational improvement equity firms based in the United States

Name: Operational improvement equity firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 4,010 companies tracked

RevenueBase identified 4,010 company matches for operational improvement equity firms associated with the United States as of September 2026 and tracks 57,624 professional contacts across them, including 32,770 with verified work emails. New York is the largest hub.

This list covers company matches for operational improvement equity firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built

4,010Companies

57,624Contacts tracked

32,770Verified emails

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The 25 largest operational improvement equity firms based in the United States

Ranked by team size

Top 25 of 4,010 company matches for operational improvement equity firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Alvarez & Marsal	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	13,099 contacts →
	Exact match “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	L.E.K. Consulting	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	4,093 contacts →
	Exact match “L.E.K.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	H.I.G. Capital	Exact match	Miami, FL, United StatesHQ recorded Sep 20, 2026	501-1,000	1,301 contacts →
	Exact match “H.I.G.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Riveron	Exact match	Dallas, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,160 contacts →
	Exact match “With over 1,200 professionals across 18 international offices, Riveron delivers tailored solutions for CFOs, private equity firms, and key stakeholders.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Advent	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	501-1,000	1,025 contacts →
	Exact match “Advent is a leading global private equity investor committed to working in partnership with management teams, entrepreneurs, and founders to help transform businesses.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	TA Associates	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	201-500	881 contacts →
	Exact match “TA is a leading global private equity firm focused on scaling growth in profitable companies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	PSG	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	513 contacts →
	Exact match “PSG is a growth equity firm that partners with software and technology-enabled services companies to help them navigate transformational growth, capitalize on strategic…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	SPARQ	Exact match	Atlanta, GA, United StatesHQ recorded Sep 20, 2026	501-1,000	487 contacts →
	Exact match “Sparq is an economic performance engineering partner, built for the age of AI.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	The Riverside Company	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	201-500	447 contacts →
	Exact match “The Riverside Company is a global investment firm focused on being one of the leading private capital options for business owners and employees at the smaller end of the middle…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Cd&r	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	51-200	385 contacts →
	Exact match “Founded in 1978, CD & R is an investment firm with an investment strategy predicated on building stronger, more profitable businesses.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Shore Capital Partners	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	51-200	327 contacts →
	Exact match “Shore Capital, a Chicago-based private equity firm with an office in Nashville, is an investor in lower-middle market companies in the Healthcare, Food and Beverage, Business…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Alpha Alternatives	Exact match	New York, United StatesHQ recorded Sep 20, 2026	201-500	301 contacts →
	Exact match “Alpha Alternatives is the specialist alternatives consulting division of Alpha FMC, dedicated to creating value for private markets clients-including Private Equity, Private Debt…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	GGG Partners, LLC Previously Grisanti, Galef & Goldress	Exact match	Atlanta, GA, United StatesHQ recorded Sep 20, 2026	n/a	283 contacts →
	Exact match “Partners, LLC has transformed under-performing companies into high performance operations for more than 60 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Alpine Investors	Exact match	San Francisco, CA, United StatesHQ recorded Sep 20, 2026	51-200	278 contacts →
	Exact match “Alpine Investors is a people-driven private equity firm that invests in software and services businesses.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Clearlake Capital Group	Exact match	Santa Monica, CA, United StatesHQ recorded Sep 20, 2026	51-200	266 contacts →
	Exact match “Clearlake Capital is a leading global alternative asset manager founded in 2006 with over $185 billion of assets under management.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Berkshire Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	201-500	255 contacts →
	Exact match “Berkshire Partners is a 100% employee-owned, multi-sector specialist investor in private and public equity, with a focus on North American-based, middle-market companies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Gtcr LLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	51-200	237 contacts →
	Exact match “Founded in 1980, GTCR is a leading private equity firm that invests behind The Leaders Strategy™ – finding and partnering with management leaders in core domains to identify…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Charlesbank Capital Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	236 contacts →
	Exact match “Based in Boston and New York City, Charlesbank is a leading middle-market private investment firm with $21.5 billion in assets under management as of 3/31/2026.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	American Securities	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	51-200	220 contacts →
	Exact match “Founded in 1994, American Securities is a leading U.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	USC Consulting Group	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	51-200	204 contacts →
	Exact match “USC Consulting Group (USCCG) is an operations management and process improvement firm that empowers your people.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	FDG Associates	Exact match	New York, CA, United StatesHQ recorded Sep 20, 2026	n/a	199 contacts →
	Exact match “FdG Associates is a leading private equity investment firm with a strong track record of partnering with management in recapitalizations and management buyouts of middle-market…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Dpo&co.	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	51-200	187 contacts →
	Exact match “DPO & Co specializes in helping Private Equity firms and their portfolio companies gain fact-based insights during the diligence process and realize post-close synergies and value…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Maine Pointe	Exact match	Bloomfield, NJ, United StatesHQ recorded Sep 20, 2026	51-200	178 contacts →
	Exact match “Maine Pointe, a member of the SGS Group, is a global supply chain and operations consulting firm trusted by many chief executives and private equity firms to drive compelling…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Portage Point Partners	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	201-500	173 contacts →
	Exact match “Portage Point is a business advisory, interim management and investment banking firm intensely focused on the middle market.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Star Mountain Capital	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	51-200	172 contacts →
	Exact match “Bringing large market expertise to smaller companies, Star Mountain’s philosophies include a data-driven and systematic approach to investing.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “operational improvement equity firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 4,010 operational improvement equity firms based in the United States

See the full list, filter by size, metro and specialty, and access 32,770 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Operational improvement equity firms based in the United States at a glance

As of Sep 20, 2026

56.9%Verified-email coverage

14.4Average contacts per company

1-10Median size (employees)

11.3%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

2,837

11-50

916

51-200

189

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 4,010 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “operational improvement equity firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 32,770 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Operational improvement equity firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “operational improvement equity firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many operational improvement equity firms are there based in the United States?

RevenueBase identified 4,010 company matches for operational improvement equity firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Alvarez & Marsal tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most operational improvement equity firms?

New York leads with 452 company records, followed by Chicago (218) and Dallas (149).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 32,770 professional contacts with verified work emails tracked across these 4,010 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 SmartSearch, 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.