Company lists · Data refreshed September 2026
Top 25 Lower middle market private equity firms based in the United States
RevenueBase identified 6,364 lower middle market private equity firms headquartered in the United States as of September 2026 and tracks 111,333 professional contacts across them, including 53,486 with verified work emails and 48,286 with mobile numbers. New York is the largest hub.
This list covers lower middle market private equity firms headquartered in the 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 4, 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 private equity firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,975 contacts → | ||||
Indirect evidence “Ares Management Corporation (NYSE: ARES) is a leading global alternative investment manager offering clients complementary primary and secondary investment solutions across the…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,915 contacts → | ||||
Indirect evidence “We are a leading global investment firm that invests as long-term owners on behalf of institutions and individuals worldwide.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,940 contacts → | ||||
Partial evidence “Nuveen is a global investment leader, managing public and private assets for clients around the world and on behalf of TIAA, our parent company and one of the world’s largest…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,515 contacts → | ||||
Strong evidence “Carlyle (NASDAQ: CG) is a global investment firm with deep industry expertise that deploys private capital across three business segments: Global Private Equity, Global Credit…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,068 contacts → | ||||
Partial evidence “Founded in 1984, Bain Capital is one of the world’s leading private investment firms.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,979 contacts → | ||||
Indirect evidence “TPG (Nasdaq: TPG) is a leading global alternative asset management firm, founded in San Francisco in 1992, with $306 billion of assets under management and investment and…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,301 contacts → | ||||
Indirect evidence “H.I.G.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,290 contacts → | ||||
Indirect evidence “Warburg Pincus LLC is the pioneer of global growth investing.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,126 contacts → | ||||
Strong evidence “Golub Capital is a market-leading, award-winning direct lender and experienced private credit manager.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,025 contacts → | ||||
Strong evidence “Advent is a leading global private equity investor committed to working in partnership with management teams, entrepreneurs, and founders to help transform businesses.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 881 contacts → | ||||
Strong evidence “TA is a leading global private equity firm focused on scaling growth in profitable companies.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 839 contacts → | ||||
Partial evidence “Vista Equity Partners (Vista) is a leading global technology investor specializing in software.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 820 contacts → | ||||
Indirect evidence “General Atlantic is a leading global investor with more than four and a half decades of experience providing capital and strategic support to over 830 companies throughout its…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 802 contacts → | ||||
Indirect evidence “Sixth Street is a global investment firm with over $135 billion in assets under management and committed capital.* The firm uses its long-term flexible capital, data-enabled…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 722 contacts → | ||||
Indirect evidence “Founded in 1964, Alger is recognized as a pioneer of growth-style investment management.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | 613 contacts → | ||||
Indirect evidence “Established in the U.S.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 604 contacts → | ||||
Indirect evidence “Carlson's roots are set in 1938, when Curtis L.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 577 contacts → | ||||
Partial evidence “Founded in 1995 by Tom Gores, Platinum Equity is a global investment firm with approximately ~$48 billion of assets under management and a portfolio of approximately 60 operating…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 543 contacts → | ||||
Indirect evidence “Hunt Companies is a family-owned principal investment firm founded in 1947, based in El Paso, TX, with interests in the real estate, infrastructure, and financial services sectors.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | 513 contacts → | ||||
Partial evidence “PSG is a growth equity firm that partners with software and technology-enabled services companies to help them navigate transformational growth, capitalize on strategic…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 465 contacts → | ||||
Partial evidence “Summit Partners is a global alternative investment firm with capital dedicated to growth equity, fixed income, and public equity opportunities.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | 464 contacts → | ||||
Strong evidence “Northland is a real estate private equity firm with $8 billion of assets under management, including more than residential units and 1.3 million square feet of commercial space…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 23 | 447 contacts → | ||||
Strong evidence “The Riverside Company is a global investment firm focused on being one of the leading private capital options for business owners and employees at the smaller end of the middle…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 24 | 385 contacts → | ||||
Indirect evidence “Founded in 1978, CD & R is an investment firm with an investment strategy predicated on building stronger, more profitable businesses.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 25 | 368 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 4, 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 private 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 private equity firms.
- Partial evidence
- Its own public description names part of lower middle market private 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 private 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 6,364 lower middle market private equity firms based in the United States
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Lower middle market private equity firms based in the United States at a glance
As of Sep 4, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 private 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 the United States whose own description of what they do matches “lower middle market private 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 private 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 private equity firms, and records with no verified work email. Companies headquartered outside United States 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, 53,486 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 4, 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 private equity firms by metro
- Lower middle market private equity firms in New York933
- Lower middle market private equity firms in Chicago321
- Lower middle market private equity firms in Dallas286
- Lower middle market private equity firms in Los Angeles221
- Lower middle market private equity firms in Boston183
- Lower middle market private equity firms in Houston179
- Lower middle market private equity firms in Austin167
- Lower middle market private equity firms in San Francisco161
- Lower middle market private equity firms in Miami153
- Lower middle market private equity firms in Atlanta142
- Lower middle market private equity firms in Denver102
- Lower middle market private equity firms in Charlotte89
- Lower middle market private equity firms in Greenwich65
- Lower middle market private equity firms in Washington58
- Lower middle market private equity firms in San Diego53
- Lower middle market private equity firms in Tampa53
- Lower middle market private equity firms in Nashville50
- Lower middle market private equity firms in Minneapolis46
- Lower middle market private equity firms in Newport Beach43
- Lower middle market private equity firms in Seattle43
- Lower middle market private equity firms in Cleveland40
- Lower middle market private equity firms in Philadelphia39
- Lower middle market private equity firms in Birmingham38
- Lower middle market private equity firms in Salt Lake City34
- Lower middle market private equity firms in Phoenix33
- Lower middle market private equity firms in Boca Raton32
- Lower middle market private equity firms in Santa Monica32
- Lower middle market private equity firms in Beverly Hills31
- Lower middle market private equity firms in New York City30
- Lower middle market private equity firms in West Palm Beach30
- Lower middle market private equity firms in Cincinnati29
- Lower middle market private equity firms in Stamford29
- Lower middle market private equity firms in Scottsdale28
- Lower middle market private equity firms in Pittsburgh26
- Lower middle market private equity firms in Columbus25
- Lower middle market private equity firms in Fort Lauderdale25
- Lower middle market private equity firms in Orlando25
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 private 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 private equity firms are there based in the United States?
RevenueBase identified 6,364 lower middle market private equity firms headquartered in the 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?
Ares Management, headquartered in Los Angeles, tops this list with the largest team on record.
Which city has the most lower middle market private equity firms?
New York leads with 933 headquartered companies, followed by Chicago (321) and Dallas (286).
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 53,486 verified decision-maker contacts tracked across these 6,364 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 4, 2026.
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Lower middle market private equity firms by geography
- Lower middle market private equity firms based in the United Kingdom
- Lower middle market private equity firms based in Canada
- Lower middle market private equity firms based in Germany
- Lower middle market private equity firms based in Australia
- Lower middle market private equity firms based in the Netherlands
- Lower middle market private equity firms based in France
- Lower middle market private equity firms based in Brazil
- Lower middle market private equity firms based in Sweden
- Lower middle market private equity firms based in Switzerland
- Lower middle market private equity firms based in Spain
- Lower middle market private equity firms based in South Africa
- Lower middle market private equity firms based in Italy
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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