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Company lists · Data refreshed September 2026

Top 25 Private equity backed companies based in Chicago, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 384 companies tracked

RevenueBase identified 384 private equity backed companies headquartered in Chicago, United States as of September 2026 and tracks 6,835 professional contacts across them, including 3,956 with verified work emails. New York is the largest hub.

This list covers private equity backed companies 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
384Companies
6,835Contacts tracked
3,956Verified emails
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The 25 largest private equity backed companies based in Chicago, United States

Ranked by team size
Top 25 of 384 private equity backed companies based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names private equity backed companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Peak6Indirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 20261,001-5,000429

“We're In The Business Of What Ought To Be The business of doing, creating, and building the world the way we see fit.”

Source: company website · checked Sep 5, 2026
2
Adams Street PartnersPartial evidence
Chicago, IL, United StatesHQ checked Sep 5, 2026201-500367

“Adams Street Partners is a global investment firm managing a comprehensive suite of private markets investment solutions.”

Source: company website · checked Sep 5, 2026
3
Shore Capital PartnersStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200327

“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: company website · checked Sep 5, 2026
4
Monroe Capital LLCPartial evidence
Chicago, IL, United StatesHQ checked Sep 5, 2026201-500325

“Monroe Capital LLC (“Monroe”) is a premier asset management firm specializing in private credit markets across various strategies, including direct lending, technology finance…”

Source: company website · checked Sep 5, 2026
5
Thoma BravoIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 2026201-500309

“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: company website · checked Sep 5, 2026
6
Gtcr LLCStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200237

“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: company website · checked Sep 5, 2026
7
The Heico Companies LLCIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 20265,001-10,000202

“Heico has a long history of success.”

Source: company website · checked Sep 5, 2026
8
The Vistria GroupPartial evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200147

“The Vistria Group is building a new kind of private investment firm that seeks to deliver both financial returns and societal impact.”

Source: company website · checked Sep 5, 2026
9
Pgim Private CapitalIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200134

“We use a patient, long-term investment strategy applying our scale, relationships, and experience.”

Source: company website · checked Sep 5, 2026
10
BPOCIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-50131

“Experience.”

Source: company website · checked Sep 5, 2026
11
TPG Twin Brook Capital PartnersIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200129

“TPG Twin Brook Capital Partners, TPG Angelo Gordon’s middle market direct lending business, is a direct lending finance company focused on providing cash-flow based financing…”

Source: company website · checked Sep 5, 2026
12
Madison Dearborn Partners, LLCStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20099

“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: company website · checked Sep 5, 2026
13
Equity Group InvestmentsStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20086

“Equity Group Investments (EGI) is the private investment firm founded by Sam Zell in 1968.”

Source: company website · checked Sep 5, 2026
14
Green Courte Partners, LLCStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20085

“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: company website · checked Sep 5, 2026
15
Waud Capital PartnersStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20082

“Based in Chicago, Waud Capital Partners is a leading growth-oriented private equity firm.”

Source: company website · checked Sep 5, 2026
16
Linden Capital PartnersStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20081

“Linden Capital Partners is a Chicago-based private equity firm focused exclusively on leveraged buyouts in the healthcare and life sciences industries.”

Source: company website · checked Sep 5, 2026
17
Flexpoint FordStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20079

“Flexpoint Ford is a specialist private equity firm focused on financial services and adjacent verticals.”

Source: company website · checked Sep 5, 2026
18
Wind Point PartnersStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5078

“Wind Point Partners is a Chicago-based private equity investment firm with approximately $6 billion in assets under management*.”

Source: company website · checked Sep 5, 2026
19
RCP AdvisorsStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20078

“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: company website · checked Sep 5, 2026
20
PPC Pritzker Private CapitalIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20067

“PPC partners with middle-market companies based in North America with positions in the manufactured products and services sectors.”

Source: company website · checked Sep 5, 2026
21
Morgan Street HoldingsPartial evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20065

“Morgan Street Holdings is a holding company and private investment group with a growth mindset, owning a diverse portfolio across industries.”

Source: company website · checked Sep 5, 2026
22
Water Street Healthcare PartnersIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5064

“At Water Street, we are dedicated to building market leaders in healthcare.”

Source: company website · checked Sep 5, 2026
23
Chicago Pacific FoundersIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5063

“Chicago Pacific Founders (“CPF”) is a strategic healthcare investment firm with a focus on healthcare services.”

Source: company website · checked Sep 5, 2026
24
Sterling PartnersIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20060

“Sterling Partners is an investment management platform.”

Source: company website · checked Sep 5, 2026
25
Tyree & D'angelo PartnersStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5059

“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: company website · checked Sep 5, 2026

Showing 25 of 384 private equity backed companies based in Chicago, United States

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Private equity backed companies based in Chicago, United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 1145 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
254
11-50
90
51-200
28
201-500
6
501-1,000
1
1,001-5,000
4
5,001-10,000
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 384 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 private equity backed companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “private equity backed companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among private equity backed companies, 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 an evidence 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, 3,956 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 5, 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.

Private equity backed companies by metro in the United States

Frequently asked

How many private equity backed companies are there based in Chicago, United States?

RevenueBase identified 384 private equity backed companies 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?

Peak6, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most private equity backed companies?

New York leads with 1145 headquartered companies, followed by Chicago (384) and Dallas (336).

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 3,956 verified decision-maker contacts tracked across these 384 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 5, 2026.

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Related lists

Browse: Companies home · Private equity backed companies in United States · All United States lists · All Private equity backed companies lists · New lists

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.

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