Company lists · Data refreshed September 2026

Top 24 Lower middle market investment firms based in Spain

RevenueBase identified 101 company matches for lower middle market investment firms associated with Spain as of September 2026 and tracks 2,392 professional contacts across them, including 639 with verified work emails. Madrid is the largest hub.

This list covers company matches for lower middle market investment firms associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built
101Companies
2,392Contacts tracked
639Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 24 largest lower middle market investment firms based in Spain

Ranked by team size
Top 24 of 101 company matches for lower middle market investment firms based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMadrid, SpainHQ recorded Sep 28, 2026201-500314 contacts →

Exact match

“AltamarCAM is a leading investment manager in private markets whose main objective is to provide institutional investors, including insurance companies, pension funds and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchMadrid, SpainHQ recorded Sep 28, 2026201-500279 contacts →

Exact match

“Arcano Partners, founded in 2003, is an independent global firm with more than 20 years of experience in international financial advisory and private markets asset management.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchMadrid, SpainHQ recorded Sep 28, 202651-200188 contacts →

Exact match

“ONEtoONE Group is an M&A Advisory Network specializing in Global M&A Advisory for the Middle-Market and Alternative Assets Management.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchMadrid, SpainHQ recorded Sep 28, 202651-200139 contacts →

Exact match

“We are active in investment banking, asset management and direct investments.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchSan Sebastián, SpainHQ recorded Sep 28, 202611-5069 contacts →

Exact match

“Leading financial services firm focused on investment and wealth management solutions.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Sep 28, 202611-5062 contacts →

Exact match

“Tresmares Capital is a growth-focused alternative asset manager currently operating in Spain, the UK and Portugal, with c.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchMadrid, SpainHQ recorded Sep 28, 202611-5044 contacts →

Exact match

“Sherpa Capital, with over 14 years of experience, is the leading private equity firm in Iberia.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchMadrid, SpainHQ recorded Sep 28, 202611-5033 contacts →

Exact match

“Redefinimos la inversión a largo plazo.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchMarbella, SpainHQ recorded Sep 28, 202651-20028 contacts →

Exact match

“Gestionamos todo tipo de productos financieros, líderes en capital privado, especializados en préstamos con garantía hipotecaria.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchMadrid, SpainHQ recorded Sep 28, 202611-5026 contacts →

Exact match

“Oquendo provides flexible capital solutions targeted at performing Iberian and French mid-market companies in the context of acquisitions, growth or shareholder reorganizations.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchBarcelona, SpainHQ recorded Sep 28, 202611-5022 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchMadrid, SpainHQ recorded Sep 28, 202611-5021 contacts →

Exact match

“Corpfin Capital is an independent private equity fund management company with +30 years of experience in the mid-market segment in Spain.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchMadrid, SpainHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“JB46 Partners is a microcap private equity investment firm.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchDonostia-san Sebastián, SpainHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“Gestora de fondos de capital privado, con más de 10 años de track record.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchMadrid, SpainHQ recorded Sep 28, 202611-5015 contacts →

Exact match

“Magnum Capital is a leading private equity firm focused on the Iberian middle market.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchMadrid, SpainHQ recorded Sep 28, 202611-5011 contacts →

Exact match

“Óptima provides investment banking services and financial and strategic advisory.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchBarcelona, SpainHQ recorded Sep 28, 20261-109 contacts →

Exact match

“The company specialized in mergers and acquisitions for mid-sized companies, family businesses and financial investors.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchBarcelona, SpainHQ recorded Sep 28, 20261-109 contacts →

Exact match

“INVERGROUP es una Gestora de Inversiones que tiene como objetivo buscar oportunidades de negocio prósperas para los inversores, tanto a nivel económico como en el aspecto social y…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchMadrid, SpainHQ recorded Sep 28, 20261-108 contacts →

Exact match

“Gestora independiente de vehículos de inversión, especializada en private equity y financiación alternativa.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchMadrid, SpainHQ recorded Sep 28, 20261-107 contacts →

Exact match

“ALMA V is an investment firm that specialises in corporate debt, primarily Senior Secured Loans as well as High-Yield Bonds and Structured Credit.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchMadrid, SpainHQ recorded Sep 28, 20261-106 contacts →

Exact match

“Carlac Capital is a firm specialized in providing personalized and high added value financial advice services.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchMadrid, SpainHQ recorded Sep 28, 20261-106 contacts →

Exact match

“Resilience Partners brings together local knowledge, alongside a global mindset, to assist best-in-class SMEs in Iberia execute their growth plans by offering them…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchMadrid, SpainHQ recorded Sep 28, 202651-2005 contacts →

Exact match

“Holding empresarial e Inversor profesional.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 24 of 101 lower middle market investment firms based in Spain

See the full list, filter by size, metro and specialty, and access 639 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Lower middle market investment firms based in Spain at a glance

As of Sep 28, 2026
26.7%Verified-email coverage
23.7Average contacts per company
1-10Median size (employees)
60.4%Largest-city concentration · Madrid
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
64
11-50
27
51-200
7
201-500
2
501-1,000
1

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 101 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Spain whose business descriptions match “lower middle market investment firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 639 professional contacts with verified work emails across the full matched dataset. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Lower middle market investment firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “lower middle market investment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many lower middle market investment firms are there based in Spain?

RevenueBase identified 101 company matches for lower middle market investment firms associated with Spain as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Altamarcam Partners tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most lower middle market investment firms?

Madrid leads with 61 company records, followed by Barcelona (18) and Marbella (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 639 professional contacts with verified work emails tracked across these 101 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 101 lower middle market investment firms based in Spain. Start with a free account, no credit card.

Download this list →

Related lists

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 SmartSearch, 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.