Company lists · Data refreshed September 2026
Top 25 Private equity backed companies based in Chicago, United States
RevenueBase identified 406 private equity backed companies headquartered in Chicago, United States as of September 2026 and tracks 6,671 professional contacts across them, including 3,941 with verified work emails. Across the United States, New York is the largest hub for this category (1,327 companies); Chicago follows with 406.
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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 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.
The 25 largest private equity backed companies based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 367 contacts → | ||||
Partial evidence “Adams Street Partners is a global investment firm managing a comprehensive suite of private markets investment solutions.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 327 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 325 contacts → | ||||
Partial evidence “Monroe Capital LLC (“Monroe”) is a premier asset management firm specializing in private credit markets across various strategies, including direct lending, technology finance…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 237 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 202 contacts → | ||||
Indirect evidence “Heico has a long history of success.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 147 contacts → | ||||
Partial evidence “The Vistria Group is building a new kind of private investment firm that seeks to deliver both financial returns and societal impact.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 134 contacts → | ||||
Indirect evidence “We use a patient, long-term investment strategy applying our scale, relationships, and experience.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 131 contacts → | ||||
Indirect evidence “Experience.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 129 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 110 contacts → | ||||
Partial evidence “Chicago Atlantic is a private market investment firm combining deep expertise with an entrepreneurial approach to multi-asset class investing.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 99 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 86 contacts → | ||||
Strong evidence “Equity Group Investments (EGI) is the private investment firm founded by Sam Zell in 1968.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 85 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 82 contacts → | ||||
Strong evidence “Based in Chicago, Waud Capital Partners is a leading growth-oriented private equity firm.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 81 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 79 contacts → | ||||
Strong evidence “Flexpoint Ford is a specialist private equity firm focused on financial services and adjacent verticals.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 78 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 78 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 65 contacts → | ||||
Partial 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 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 64 contacts → | ||||
Indirect evidence “At Water Street, we are dedicated to building market leaders in healthcare.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 63 contacts → | ||||
Indirect evidence “Chicago Pacific Founders (“CPF”) is a strategic healthcare investment firm with a focus on healthcare services.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 60 contacts → | ||||
Indirect evidence “Sterling Partners is an investment management platform.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 59 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
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: private equity backed companies. 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 private equity backed companies.
- Partial evidence
- Its own public description names part of private equity backed companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name private equity backed companies. 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 406 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 14, 2026Companies by employee count
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 406 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 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 “private equity backed companies”. 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 private equity backed companies), 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 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 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, 3,941 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 14, 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
- Private equity backed companies in New York1327
- Private equity backed companies in Dallas392
- Private equity backed companies in Los Angeles280
- Private equity backed companies in Houston261
- Private equity backed companies in San Francisco255
- Private equity backed companies in Boston250
- Private equity backed companies in Miami246
- Private equity backed companies in Austin223
- Private equity backed companies in Atlanta188
- Private equity backed companies in Denver145
- Private equity backed companies in Charlotte105
- Private equity backed companies in Washington89
- Private equity backed companies in San Diego81
- Private equity backed companies in Nashville76
- Private equity backed companies in Tampa71
- Private equity backed companies in Newport Beach69
- Private equity backed companies in Philadelphia62
- Private equity backed companies in Seattle61
- Private equity backed companies in Salt Lake City57
- Private equity backed companies in Beverly Hills54
- Private equity backed companies in Minneapolis54
- Private equity backed companies in Birmingham51
- Private equity backed companies in Cleveland51
- Private equity backed companies in New York City51
- Private equity backed companies in Scottsdale49
- Private equity backed companies in Boca Raton46
- Private equity backed companies in Phoenix45
- Private equity backed companies in Stamford43
- Private equity backed companies in Santa Monica42
- Private equity backed companies in Menlo Park41
- Private equity backed companies in Orlando40
- Private equity backed companies in West Palm Beach40
- Private equity backed companies in Fort Lauderdale39
- Private equity backed companies in Las Vegas39
- Private equity backed companies in Palo Alto39
- Private equity backed companies in Cincinnati34
- Private equity backed companies in Fort Worth34
- Private equity backed companies in Irvine34
- Private equity backed companies in Raleigh34
- Private equity backed companies in Pittsburgh33
- Private equity backed companies in Columbus31
- Private equity backed companies in Miami Beach31
- Private equity backed companies in Portland31
- Private equity backed companies in Indianapolis30
- Private equity backed companies in Omaha27
- Private equity backed companies in San Antonio27
- Private equity backed companies in Westport27
- Private equity backed companies in Charleston26
- Private equity backed companies in Coral Gables26
- Private equity backed companies in Kansas City26
- Private equity backed companies in Bethesda25
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 private equity backed companies, 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 private equity backed companies are there based in Chicago, United States?
RevenueBase identified 406 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?
Adams Street Partners, headquartered in Chicago, tops this list with the largest team on record.
Which city in the United States has the most private equity backed companies?
New York leads the United States with 1,327 headquartered companies, followed by Chicago (406) and Dallas (392).
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 3,941 verified decision-maker contacts tracked across these 406 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 14, 2026.
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Private equity backed companies by geography
- Private equity backed companies based in the United States
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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.
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