Company lists · Data refreshed September 2026
Top 25 Mid market pe firms based in Chicago, United States
RevenueBase identified 313 mid market pe firms headquartered in Chicago, United States as of September 2026 and tracks 5,128 professional contacts across them, including 3,089 with verified work emails. New York is the largest hub.
This list covers mid market pe 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 21, 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 mid market pe firms 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 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 134 contacts → | ||||
Indirect evidence “We use a patient, long-term investment strategy applying our scale, relationships, and experience.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 131 contacts → | ||||
Indirect evidence “Experience.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 129 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 86 contacts → | ||||
Indirect evidence “Equity Group Investments (EGI) is the private investment firm founded by Sam Zell in 1968.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 85 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 82 contacts → | ||||
Indirect evidence “Based in Chicago, Waud Capital Partners is a leading growth-oriented private equity firm.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 81 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 79 contacts → | ||||
Indirect evidence “Flexpoint Ford is a specialist private equity firm focused on financial services and adjacent verticals.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 67 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 64 contacts → | ||||
Partial evidence “At Water Street, we are dedicated to building market leaders in healthcare.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 58 contacts → | ||||
Partial evidence “Peakstone is the trusted partner and leading force in the lower middle market U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 54 contacts → | ||||
Indirect evidence “Founded in 2011, G Squared is aligned to a fundamental shift: venture-backed companies are staying private longer.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 51 contacts → | ||||
Indirect evidence “Frontenac is a Chicago-based private equity firm.” Source: RevenueBase Database · checked Sep 21, 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: mid market pe 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 mid market pe firms.
- Partial evidence
- Its own public description names part of mid market pe firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name mid market pe 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 313 mid market pe firms based in Chicago, United States
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Mid market pe firms based in Chicago, United States at a glance
As of Sep 21, 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 313 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 mid market pe 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 “mid market pe 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 mid market pe 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 mid market pe 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, 3,089 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 21, 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.
Mid market pe firms by metro in the United States
- Mid market pe firms in New York929
- Mid market pe firms in Chicago313
- Mid market pe firms in Dallas282
- Mid market pe firms in Los Angeles195
- Mid market pe firms in Boston186
- Mid market pe firms in Houston186
- Mid market pe firms in Austin178
- Mid market pe firms in San Francisco162
- Mid market pe firms in Miami153
- Mid market pe firms in Atlanta136
- Mid market pe firms in Denver106
- Mid market pe firms in Charlotte82
- Mid market pe firms in Greenwich64
- Mid market pe firms in Nashville58
- Mid market pe firms in Washington56
- Mid market pe firms in Tampa53
- Mid market pe firms in Newport Beach47
- Mid market pe firms in Seattle47
- Mid market pe firms in Minneapolis45
- Mid market pe firms in Cleveland43
- Mid market pe firms in Philadelphia43
- Mid market pe firms in San Diego43
- Mid market pe firms in Birmingham40
- Mid market pe firms in Boca Raton38
- Mid market pe firms in Salt Lake City38
- Mid market pe firms in New York City34
- Mid market pe firms in Cincinnati33
- Mid market pe firms in Beverly Hills30
- Mid market pe firms in Phoenix30
- Mid market pe firms in Santa Monica30
- Mid market pe firms in Scottsdale29
- Mid market pe firms in West Palm Beach29
- Mid market pe firms in Stamford28
- Mid market pe firms in Fort Lauderdale26
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 mid market pe 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 mid market pe firms are there based in Chicago, United States?
RevenueBase identified 313 mid market pe 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?
Adams Street Partners, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most mid market pe firms?
New York leads with 929 headquartered companies, followed by Chicago (313) and Dallas (282).
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 3,089 verified decision-maker contacts tracked across these 313 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 21, 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.
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