Company lists · Data refreshed September 2026

Top 25 Add-on acquisition firms based in Chicago, United States

Name: Add-on acquisition 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 19, 2026 254 companies tracked

RevenueBase identified 254 add-on acquisition firms headquartered in Chicago, United States as of September 2026 and tracks 3,978 professional contacts across them, including 2,376 with verified work emails. New York is the largest hub.

This list covers add-on acquisition 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 19, 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 19, 2026 86% judged on-target in blind review

254Companies

3,978Contacts tracked

2,376Verified emails

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The 25 largest add-on acquisition firms based in Chicago, United States

Ranked by team size

Top 25 of 254 add-on acquisition firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to add-on acquisition 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	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	327 contacts →
	Indirect 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 19, 2026
2	Thoma Bravo	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	201-500	309 contacts →
	Indirect evidence “Thoma Bravo is the world’s largest software-focused investment firm, with more than $172 billion in assets under management as of March 31, 2026.” Source: RevenueBase Database · checked Sep 19, 2026
3	Gtcr LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	237 contacts →
	Indirect 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 19, 2026
4	BPOC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	131 contacts →
	Indirect evidence “Experience.” Source: RevenueBase Database · checked Sep 19, 2026
5	Madison Dearborn Partners, LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	99 contacts →
	Indirect 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 19, 2026
6	Equity Group Investments	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	86 contacts →
	Indirect evidence “Equity Group Investments (EGI) is the private investment firm founded by Sam Zell in 1968.” Source: RevenueBase Database · checked Sep 19, 2026
7	Green Courte Partners, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	85 contacts →
	Partial evidence “Green Courte Partners, LLC is a high energy, fast-paced private equity real estate investment firm focused on building industry-leading companies within niche real estate sectors.” Source: RevenueBase Database · checked Sep 19, 2026
8	Waud Capital Partners	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	82 contacts →
	Indirect evidence “Based in Chicago, Waud Capital Partners is a leading growth-oriented private equity firm.” Source: RevenueBase Database · checked Sep 19, 2026
9	Linden Capital Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	81 contacts →
	Partial evidence “Linden Capital Partners is a Chicago-based private equity firm focused exclusively on leveraged buyouts in the healthcare and life sciences industries.” Source: RevenueBase Database · checked Sep 19, 2026
10	Flexpoint Ford	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 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 19, 2026
11	Wind Point Partners	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	78 contacts →
	Indirect 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 19, 2026
12	RCP Advisors	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	78 contacts →
	Indirect evidence “Founded in 2001, RCP Advisors, a strategy of Ridgepost Capital (NYSE: RPC), is a private equity investment firm that provides access to North American small buyout fund managers…” Source: RevenueBase Database · checked Sep 19, 2026
13	PPC Pritzker Private Capital	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “PPC partners with middle-market companies based in North America with positions in the manufactured products and services sectors.” Source: RevenueBase Database · checked Sep 19, 2026
14	Morgan Street Holdings	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	65 contacts →
	Indirect evidence “Morgan Street Holdings is a holding company and private investment group with a growth mindset, owning a diverse portfolio across industries.” Source: RevenueBase Database · checked Sep 19, 2026
15	Water Street Healthcare Partners	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	64 contacts →
	Indirect evidence “At Water Street, we are dedicated to building market leaders in healthcare.” Source: RevenueBase Database · checked Sep 19, 2026
16	Chicago Pacific Founders	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	63 contacts →
	Partial evidence “Chicago Pacific Founders (“CPF”) is a strategic healthcare investment firm with a focus on healthcare services.” Source: RevenueBase Database · checked Sep 19, 2026
17	Tyree & D'angelo Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	59 contacts →
	Partial evidence “Tyree & D'Angelo Partners ("TDP") is a private equity investment firm that focuses on control investments in the lower middle market (companies with $1-5M of EBITDA).” Source: RevenueBase Database · checked Sep 19, 2026
18	Core Industrial Partners	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	57 contacts →
	Indirect 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 19, 2026
19	Sheridan Capital Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	53 contacts →
	Partial evidence “Sheridan Capital Partners is a healthcare private equity firm that focuses on lower middle market buyouts and growth equity in the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
20	Frontenac	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	51 contacts →
	Indirect evidence “Frontenac is a Chicago-based private equity firm.” Source: RevenueBase Database · checked Sep 19, 2026
21	Baird Capital	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	49 contacts →
	Indirect evidence “Baird Capital makes venture capital, growth equity and private equity investments in strategically targeted sectors around the world.” Source: RevenueBase Database · checked Sep 19, 2026
22	Riverbend Industries	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	501-1,000	45 contacts →
	Indirect evidence “Riverbend Industries is a family-owned business that acquires and operates North American manufacturing companies in the building and industrial products sectors.” Source: RevenueBase Database · checked Sep 19, 2026
23	Keystone Capital	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 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 19, 2026
24	Civc Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 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 19, 2026
25	PSP Partners	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	42 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 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: add-on acquisition 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 add-on acquisition firms.
Partial evidence: Its own public description names part of add-on acquisition firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name add-on acquisition 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 254 add-on acquisition firms based in Chicago, United States

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Add-on acquisition firms based in Chicago, United States at a glance

As of Sep 19, 2026

59.7%Verified-email coverage

15.7Average contacts per company

1-10Median size (employees)

257.5%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

163

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 254 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 add-on acquisition 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 “add-on acquisition 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 add-on acquisition 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 add-on acquisition 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, 2,376 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 19, 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.

Add-on acquisition firms by metro in the United States

Add-on acquisition firms in New York654
Add-on acquisition firms in Chicago254
Add-on acquisition firms in Dallas210
Add-on acquisition firms in Los Angeles150
Add-on acquisition firms in Houston149
Add-on acquisition firms in Boston142
Add-on acquisition firms in Austin140
Add-on acquisition firms in San Francisco117
Add-on acquisition firms in Miami115
Add-on acquisition firms in Atlanta93
Add-on acquisition firms in Denver82
Add-on acquisition firms in Charlotte62
Add-on acquisition firms in Greenwich44
Add-on acquisition firms in Nashville43
Add-on acquisition firms in Washington42
Add-on acquisition firms in Tampa40
Add-on acquisition firms in Cleveland34
Add-on acquisition firms in Philadelphia34
Add-on acquisition firms in Seattle34
Add-on acquisition firms in Newport Beach33
Add-on acquisition firms in Minneapolis32
Add-on acquisition firms in San Diego31
Add-on acquisition firms in Birmingham30
Add-on acquisition firms in Salt Lake City28
Add-on acquisition firms in Boca Raton27
Add-on acquisition firms in Beverly Hills25

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 add-on acquisition 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 add-on acquisition firms are there based in Chicago, United States?

RevenueBase identified 254 add-on acquisition 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 add-on acquisition firms?

New York leads with 654 headquartered companies, followed by Chicago (254) and Dallas (210).

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 2,376 verified decision-maker contacts tracked across these 254 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 19, 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.