Company lists · Data refreshed September 2026

Top 25 Operational improvement equity firms based in Chicago, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 218 companies tracked

RevenueBase identified 218 operational improvement equity firms headquartered in Chicago, United States as of September 2026 and tracks 2,872 professional contacts across them, including 1,567 with verified work emails. New York is the largest hub.

This list covers operational improvement equity firms headquartered in Chicago, United States, 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 20, 2026.

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 20, 2026 86% judged on-target in blind review

218Companies

2,872Contacts tracked

1,567Verified emails

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The 25 largest operational improvement equity firms based in Chicago, United States

Ranked by team size

Top 25 of 218 operational improvement equity firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to operational improvement equity 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	Shore Capital Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	327 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
2	Gtcr LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	237 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
3	Dpo&co.	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	187 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
4	Portage Point Partners	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	201-500	173 contacts →
	Indirect evidence “Portage Point is a business advisory, interim management and investment banking firm intensely focused on the middle market.” Source: RevenueBase Database · checked Sep 20, 2026
5	BPOC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	131 contacts →
	Indirect evidence “Experience.” Source: RevenueBase Database · checked Sep 20, 2026
6	Madison Dearborn Partners, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	99 contacts →
	Partial evidence “Madison Dearborn Partners, LLC ("MDP") is a leading private equity investment firm based in Chicago that, since its formation in 1992, has raised aggregate capital of…” Source: RevenueBase Database · checked Sep 20, 2026
7	Equity Group Investments	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	86 contacts →
	Partial evidence “Equity Group Investments (EGI) is the private investment firm founded by Sam Zell in 1968.” Source: RevenueBase Database · checked Sep 20, 2026
8	Flexpoint Ford	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	79 contacts →
	Partial evidence “Flexpoint Ford is a specialist private equity firm focused on financial services and adjacent verticals.” Source: RevenueBase Database · checked Sep 20, 2026
9	Wind Point Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	78 contacts →
	Partial evidence “Wind Point Partners is a Chicago-based private equity investment firm with approximately $6 billion in assets under management*.” Source: RevenueBase Database · checked Sep 20, 2026
10	The Keystone Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	63 contacts →
	Indirect evidence “The Keystone Group is a results-oriented management consulting firm.” Source: RevenueBase Database · checked Sep 20, 2026
11	Core Industrial Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	57 contacts →
	Partial evidence “CORE is an industrials-focused private equity firm with more than $1.58 billion in total limited partner capital commitments across four funds investing in North American lower…” Source: RevenueBase Database · checked Sep 20, 2026
12	Frontenac	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	51 contacts →
	Partial evidence “Frontenac is a Chicago-based private equity firm.” Source: RevenueBase Database · checked Sep 20, 2026
13	Messina Group Consulting Solutions	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	201-500	50 contacts →
	Partial evidence “Messina Group is a Trusted Advisor to Private Equity Firms, their Portfolio companies, and Investment Banks to Accelerate Value Creation at the intersection of Business…” Source: RevenueBase Database · checked Sep 20, 2026
14	Keystone Capital	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	44 contacts →
	Indirect evidence “Keystone was founded in 1994 with the objective of investing the personal capital of its partners in high-quality businesses; patiently building long-term value alongside…” Source: RevenueBase Database · checked Sep 20, 2026
15	Civc Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	43 contacts →
	Partial evidence “CIVC Partners is a private equity firm, based in Chicago, focused on middle market buyout, recapitalization, and growth equity investments in industry sectors where our firm can…” Source: RevenueBase Database · checked Sep 20, 2026
16	Silverman Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	42 contacts →
	Indirect evidence “Silverman Consulting is a Midwest-based management advisory firm with a legacy of helping companies navigate their most critical moments.” Source: RevenueBase Database · checked Sep 20, 2026
17	Focus Management Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	37 contacts →
	Indirect evidence “Focus Management Group is headquartered in Chicago, IL, with offices in Tampa, and Cleveland.” Source: RevenueBase Database · checked Sep 20, 2026
18	The Edgewater Funds	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	35 contacts →
	Partial evidence “The Edgewater Funds is a Chicago-based private equity firm with over $4 billion of capital commitments raised since 2001.” Source: RevenueBase Database · checked Sep 20, 2026
19	Mcnally Capital	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	34 contacts →
	Partial evidence “McNally Capital is a private equity firm based in Chicago, Illinois.” Source: RevenueBase Database · checked Sep 20, 2026
20	The Proaction Group	Strong evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	29 contacts →
	Strong evidence “The ProAction Group is the “Go-To” Operational Resource focused on Private Equity/Portfolio companies.” Source: RevenueBase Database · checked Sep 20, 2026
21	NEW Harbor Capital	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	28 contacts →
	Partial evidence “New Harbor Capital is a Chicago-based private equity firm focused on investing in lower middle market, growth-oriented healthcare, education, and business services companies.” Source: RevenueBase Database · checked Sep 20, 2026
22	MAY River Capital	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	26 contacts →
	Partial evidence “Based in Chicago, May River Capital is a private equity investment firm founded by three partners seeking to help lower middle-market, high-caliber industrial businesses grow and…” Source: RevenueBase Database · checked Sep 20, 2026
23	Kinzie Capital Partners LP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	26 contacts →
	Partial evidence “Kinzie Capital Partners is a Chicago-based private equity firm.” Source: RevenueBase Database · checked Sep 20, 2026
24	Pfingsten Partners	Strong evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	25 contacts →
	Strong evidence “Pfingsten is an operationally oriented private equity firm based in Chicago.” Source: RevenueBase Database · checked Sep 20, 2026
25	RED Arts Capital	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	23 contacts →
	Indirect evidence “Based in Chicago, Red Arts Capital is a rapidly growing investment firm specializing in family-owned, middle market businesses across the supply chain, transportation, and…” Source: RevenueBase Database · checked Sep 20, 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: operational improvement equity 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 operational improvement equity firms.
Partial evidence: Its own public description names part of operational improvement equity firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name operational improvement equity 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 218 operational improvement equity firms based in Chicago, United States

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Operational improvement equity firms based in Chicago, United States at a glance

As of Sep 20, 2026

54.6%Verified-email coverage

13.2Average contacts per company

1-10Median size (employees)

198.2%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

143

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 218 companies.

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 operational improvement equity 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.
What qualifies: Companies headquartered in Chicago, United States whose own description of what they do matches “operational improvement equity 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 operational improvement equity 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 operational improvement equity firms, and records with no verified work email. Companies headquartered outside Chicago are excluded even when they keep an office there.
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, 1,567 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 20, 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.

Operational improvement equity firms by metro in the United States

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 operational improvement equity 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 operational improvement equity firms are there based in Chicago, United States?

RevenueBase identified 218 operational improvement equity firms headquartered in Chicago, United States 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?

Shore Capital Partners, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most operational improvement equity firms?

New York leads with 432 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 1,567 verified decision-maker contacts tracked across these 218 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 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 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.