Company lists · Data refreshed September 2026
Top 25 Lower middle market equity firms based in Chicago, United States
RevenueBase identified 169 lower middle market equity firms headquartered in Chicago, United States as of September 2026 and tracks 2,882 professional contacts across them, including 1,793 with verified work emails. New York is the largest hub.
This list covers lower middle market 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.
The 25 largest lower middle market equity firms based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 504 contacts → | ||||
Indirect evidence “BDT & MSD Partners is a merchant bank serving founders, family business owners, and long-term strategic investors.” Source: RevenueBase Database · checked Sep 20, 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 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 138 contacts → | ||||
Indirect evidence “Founded in 1954, the Association for Corporate Growth (ACG) has 60 chapters worldwide, representing members.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 129 contacts → | ||||
Strong 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 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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, 2026Thanks. The Data Team will review it. | |||||
| 8 | 67 contacts → | ||||
Strong 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 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 59 contacts → | ||||
Indirect evidence “For over 40 years, First Analysis has been at the forefront of supporting emerging growth companies and established leaders across high-growth, technology-driven sectors.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 58 contacts → | ||||
Strong evidence “Peakstone is the trusted partner and leading force in the lower middle market U.S.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 57 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 13 | 53 contacts → | ||||
Strong 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 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 51 contacts → | ||||
Partial evidence “Frontenac is a Chicago-based private equity firm.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 49 contacts → | ||||
Partial evidence “Baird Capital makes venture capital, growth equity and private equity investments in strategically targeted sectors around the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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, 2026Thanks. The Data Team will review it. | |||||
| 17 | 43 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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, 2026Thanks. The Data Team will review it. | |||||
| 19 | 31 contacts → | ||||
Strong evidence “Invision Capital, is a middle market private equity firm providing “Flexible Capital” to facilitate buyouts, recapitalizations and growth investments in manufacturing…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 28 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 21 | 28 contacts → | ||||
Strong evidence “Founded in 2005 and based in Chicago, IL, Twin Bridge Capital Partners is an independent private equity firm focused on investing in North American small and lower middle market…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 26 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 23 | 26 contacts → | ||||
Strong evidence “The Copia Group is a diverse-owned investment adviser that provides debt and equity capital solutions to privately held, lower middle-market, U.S-based companies.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 23 contacts → | ||||
Indirect evidence “Shorehill has been listed amongst Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 21 contacts → | ||||
Strong evidence “Benford Capital Partners is a Chicago-based private equity investment firm focused on leveraged buyouts and recapitalizations of lower middle market companies.” Source: RevenueBase Database · checked Sep 20, 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: lower middle market 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 lower middle market equity firms.
- Partial evidence
- Its own public description names part of lower middle market equity firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name lower middle market 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 169 lower middle market equity firms based in Chicago, United States
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Lower middle market equity firms based in Chicago, United States at a glance
As of Sep 20, 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 169 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 lower middle market 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 “lower middle market 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 lower middle market 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 lower middle market 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, 1,793 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.
Lower middle market equity firms by metro in the United States
- Lower middle market equity firms in New York410
- Lower middle market equity firms in Chicago169
- Lower middle market equity firms in Dallas121
- Lower middle market equity firms in Los Angeles108
- Lower middle market equity firms in Boston70
- Lower middle market equity firms in Houston68
- Lower middle market equity firms in San Francisco67
- Lower middle market equity firms in Atlanta65
- Lower middle market equity firms in Austin54
- Lower middle market equity firms in Miami51
- Lower middle market equity firms in Denver42
- Lower middle market equity firms in Charlotte39
- Lower middle market equity firms in Greenwich33
- Lower middle market equity firms in Minneapolis25
- Lower middle market equity firms in San Diego25
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 lower middle market 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 lower middle market equity firms are there based in Chicago, United States?
RevenueBase identified 169 lower middle market 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?
BDT & MSD Partners, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most lower middle market equity firms?
New York leads with 410 headquartered companies, followed by Chicago (169) and Dallas (121).
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 1,793 verified decision-maker contacts tracked across these 169 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.
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