Company lists · Data refreshed September 2026
Top 24 Lower middle market equity firms based in Spain
RevenueBase identified 114 lower middle market equity firms headquartered in Spain as of September 2026 and tracks 1,348 professional contacts across them, including 267 with verified work emails. Madrid is the largest hub.
This list covers lower middle market equity firms headquartered in Spain, 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 24 largest lower middle market equity firms based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 314 contacts → | ||||
Partial evidence “AltamarCAM is a leading investment manager in private markets whose main objective is to provide institutional investors, including insurance companies, pension funds and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 139 contacts → | ||||
Indirect evidence “We are active in investment banking, asset management and direct investments.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 100 contacts → | ||||
Partial evidence “Miura Partners is a purpose-driven private equity firm founded in 2008, with offices in Barcelona and Madrid.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 69 contacts → | ||||
Indirect evidence “Leading financial services firm focused on investment and wealth management solutions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 62 contacts → | ||||
Indirect evidence “Tresmares Capital is a growth-focused alternative asset manager currently operating in Spain, the UK and Portugal, with c.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 44 contacts → | ||||
Partial evidence “Sherpa Capital, with over 14 years of experience, is the leading private equity firm in Iberia.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 33 contacts → | ||||
Indirect evidence “Redefinimos la inversión a largo plazo.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 29 contacts → | ||||
Partial evidence “Talde Private Equity es una gestora de Capital Privado que invierte fundamentalmente en Pequeñas y Medianas Empresas españolas a las que apoyamos en el diseño y ejecución de…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 26 contacts → | ||||
Partial evidence “Oquendo provides flexible capital solutions targeted at performing Iberian and French mid-market companies in the context of acquisitions, growth or shareholder reorganizations.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 22 contacts → | ||||
Indirect evidence “Altria Corpo, with offices in Barcelona and Madrid, is made up of professionals with more than 25 years of experience in corporate banking, investment banking, commercial banking…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 21 contacts → | ||||
Strong evidence “Corpfin Capital is an independent private equity fund management company with +30 years of experience in the mid-market segment in Spain.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 20 contacts → | ||||
Indirect evidence “LEVERAGING OPERATING PERFORMANCE & INTERNATIONAL EXPANSION Nexxus Iberia Fund I plans to invest in 8 to 10 small to medium sized companies in Spain and generate compelling returns…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 18 contacts → | ||||
Indirect evidence “Mirai Investments es un proyecto de inversión especializado en el desarrollo industrial sostenible.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 16 contacts → | ||||
Partial evidence “JB46 Partners is a microcap private equity investment firm.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 16 contacts → | ||||
Partial evidence “ABE Capital Partners is a private equity fund manager targeting long-term equity investments in Small and Mid-Enterprises (“SMEs”) with growth potential.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 16 contacts → | ||||
Indirect evidence “Stellum Capital es una gestora independiente de Capital Privado con diversos fondos bajo gestión, que invierten en empresas a las que dan soporte en el diseño y ejecución de sus…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 15 contacts → | ||||
Indirect evidence “Clave es COMPROMISO Impulsamos proyectos innovadores y pymes industriales, a través de inversiones o de la inmersión en el proceso de creación de valor de la empresa.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 11 contacts → | ||||
Indirect evidence “XesGalicia is a Galician Venture Capital Management firm in which Galician Institute for Economic Promotion (IGAPE) has a 100% participation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 contacts → | ||||
Indirect evidence “Somos un grupo inversor orientado a dinamizar el crecimiento de los negocios en el segmento de la pequeña y mediana empresa.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 8 contacts → | ||||
Indirect evidence “FANDIS nace en julio de 2022 como vehículo de inversión de un grupo de amigos de diferentes sectores.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Indirect evidence “We make active Investments in exceptional Small and Medium Enterprises with a collaborative approach, and advise clients with the same mindset and commitment.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Indirect evidence “We are a firm that invests in leading Spanish mid-sized companies, and actively helps them execute their investment plans.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 7 contacts → | ||||
Indirect evidence “Kaizaharra Corporación Empresarial (KCE) is a business corporation with headquarters in Bilbao and participation in different companies, including Aernnova, an aeronautical…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Indirect evidence “Adapta Capital invierte en pequeñas y medianas empresas en España y Portugal.” 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 24 of 114 lower middle market equity firms based in Spain
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Lower middle market equity firms based in Spain at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 114 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 Spain 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 Spain 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, 267 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
- Lower middle market equity firms in Madrid55
- Lower middle market equity firms in Barcelona25
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 Spain?
RevenueBase identified 114 lower middle market equity firms headquartered in Spain 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?
Altamarcam Partners, headquartered in Madrid, tops this list with the largest team on record.
Which city has the most lower middle market equity firms?
Madrid leads with 55 headquartered companies, followed by Barcelona (25) and Bilbao (4).
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 267 verified decision-maker contacts tracked across these 114 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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