Company lists · Data refreshed September 2026

Top 25 Platform investment private equity firms based in Newport Beach, United States

Name: Platform investment private equity firms based in Newport Beach, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 55 companies tracked

RevenueBase identified 55 platform investment private equity firms headquartered in Newport Beach, United States as of September 2026 and tracks 521 professional contacts across them, including 193 with verified work emails. Across the United States, New York is the largest hub for this category (986 companies); Newport Beach has 55.

This list covers platform investment private equity firms headquartered in Newport Beach, 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 29, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

55Companies

521Contacts tracked

193Verified emails

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The 25 largest platform investment private equity firms based in Newport Beach, United States

Ranked by team size

Top 25 of 55 platform investment private equity firms based in Newport Beach, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to platform investment private equity firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	KBS	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	51-200	207 contacts →
	Indirect evidence “KBS is proud to celebrate over 30 years in business, now guided by our next generation of leadership.” Source: RevenueBase Database · checked Sep 29, 2026
2	Mark IV Capital	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	51-200	79 contacts →
	Strong evidence “Mark IV Capital is a privately held investment platform that specializes in commercial real estate and private equity.” Source: RevenueBase Database · checked Sep 29, 2026
3	Sway Capital	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	51-200	32 contacts →
	Indirect evidence “At Sway Capital, we're transforming capital into catalysts and investing in tomorrow's breakthroughs.” Source: RevenueBase Database · checked Sep 29, 2026
4	L Squared Capital Partners	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	11-50	16 contacts →
	Strong evidence “L Squared Capital Partners is a private equity investment firm headquartered in Newport Beach, CA, with approximately $5.3 billion of cumulative capital commitments that seeks to…” Source: RevenueBase Database · checked Sep 29, 2026
5	Jupiter Holdings LLC	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	11 contacts →
	Strong evidence “Jupiter Holdings LLC is a Newport Beach, California-based private investment firm specializing in alternative investments and the pursuit of superior absolute returns.” Source: RevenueBase Database · checked Sep 29, 2026
6	Greenfield Solomon	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	10 contacts →
	Strong evidence “Greenfield Solomon is a private equity firm that specializes in providing alternative financing for small-to-midsize companies and real estate syndications.” Source: RevenueBase Database · checked Sep 29, 2026
7	Ault & Company, INC	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	11-50	9 contacts →
	Strong evidence “Ault & Company is a private holding company located in Orange County, California with a focus on Private Equity and Venture Capital.” Source: RevenueBase Database · checked Sep 29, 2026
8	Real Estate Development Associates, LLC	Partial evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	7 contacts →
	Partial evidence “Real Estate Development Associates (REDA) is a diversified investment company which acquires and develops industrial and office properties in Southern California.” Source: RevenueBase Database · checked Sep 29, 2026
9	Intrust Property Group	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	6 contacts →
	Strong evidence “InTrust is an owner-driven diversified real estate investment company whose Principals have an established track record in development and real estate debt and equity Investments.” Source: RevenueBase Database · checked Sep 29, 2026
10	Lotus Domaine	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	11-50	6 contacts →
	Strong evidence “Lotus Domaine is a private equity fund that builds wealth for its investors by acquiring, transforming, and exiting high-potential, small to mid-size technology companies that…” Source: RevenueBase Database · checked Sep 29, 2026
11	Systm Brands	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Indirect evidence “SYSTM Brands is a team of proven executives, experienced operators and passionate founders who are dedicated to growing brands that deliver truly impactful and innovative products.” Source: RevenueBase Database · checked Sep 29, 2026
12	Solis Capital Partners LLC	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Strong evidence “Solis Capital Partners is a private equity firm based in Southern California.” Source: RevenueBase Database · checked Sep 29, 2026
13	Riviera Capital Partners	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Strong evidence “Riviera Capital is a leading private equity firm investing in micro-cap companies.” Source: RevenueBase Database · checked Sep 29, 2026
14	Valkyrie	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Strong evidence “Valkyrie Brands, LLC (‘Valkyrie’), Private Equity.” Source: RevenueBase Database · checked Sep 29, 2026
15	Eagle Four Partners	Partial evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	201-500	3 contacts →
	Partial evidence “Eagle Four Partners has participated as the lead equity investor in numerous real estate transactions throughout the United States, including most notably the acquisition of the…” Source: RevenueBase Database · checked Sep 29, 2026
16	Emerald Creek Group, LLC	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “Emerald Creek Group, LLC is a Southern California based private equity firm focused on real estate with the primary objective of building an investment portfolio focused on…” Source: RevenueBase Database · checked Sep 29, 2026
17	Aero-Mark, LLC	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “Aero-mark, LLC is a private investment firm with over 35 years of experience in the acquisition, growth, and improvement of companies.” Source: RevenueBase Database · checked Sep 29, 2026
18	XMF Capital	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “XMF Capital is a global private investment firm.” Source: RevenueBase Database · checked Sep 29, 2026
19	Five Crowns Capital	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “Founded in January 2003, Five Crowns Capital is a private investment firm that sponsors buyouts of small and middle market companies.” Source: RevenueBase Database · checked Sep 29, 2026
20	Hotel Innvestor	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “Hotel Innvestor is a hotel investment platform dedicated to identifying compelling investment opportunities in acquiring or recapitalizing existing hotels or ground up development…” Source: RevenueBase Database · checked Sep 29, 2026
21	Axle Point Capital	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	2 contacts →
	Indirect evidence “Axle Point Capital leverages its extensive experience in the lower middle market business services and diversified industrials sectors to invest in and partner with talented…” Source: RevenueBase Database · checked Sep 29, 2026
22	Excelsior Capital Partners, LLC	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	11-50	2 contacts →
	Indirect evidence “Excelsior Capital Partners is focused on investing in distressed debt, special situations, and specialty lending across commercial real estate and operating companies.” Source: RevenueBase Database · checked Sep 29, 2026
23	Groundswell Real Estate	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	51-200	1 contacts →
	Strong evidence “A new Commercial Real Estate equity investment platform, Groundswell Real Estate Investments, LLC is an affiliate of Columnar West Holdings, LLC and Traylor Capital.” Source: RevenueBase Database · checked Sep 29, 2026
24	Capy Capital	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	1 contacts →
	Indirect evidence “We buy and grow family owned businesses.” Source: RevenueBase Database · checked Sep 29, 2026
25	TBG Equity	Partial evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	1-10	1 contacts →
	Partial evidence “TBG Equity was founded by a team that partners with current business owners to invest and grow companies.” Source: RevenueBase Database · checked Sep 29, 2026

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: platform investment 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 platform investment private equity firms.
Partial evidence: Its own public description names part of platform investment 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 platform investment 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 55 platform investment private equity firms based in Newport Beach, United States

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Platform investment private equity firms based in Newport Beach, United States at a glance

As of Sep 29, 2026

37.0%Verified-email coverage

9.5Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Newport Beach, so it is reported there. Company counts and contact totals on this page are exact for Newport Beach, over 55 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 platform investment 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 Newport Beach, United States whose own description of what they do matches “platform investment 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 platform investment 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 platform investment private equity firms, and records with no verified work email. Companies headquartered outside Newport Beach 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, 193 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 29, 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.

Platform investment private equity firms by metro in the United States

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 platform investment 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 platform investment private equity firms are there based in Newport Beach, United States?

RevenueBase identified 55 platform investment private equity firms headquartered in Newport Beach, 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?

KBS, headquartered in Newport Beach, tops this list with the largest team on record.

Which city in the United States has the most platform investment private equity firms?

New York leads the United States with 986 headquartered companies, followed by Chicago (311) and Dallas (302). Newport Beach has 55.

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 193 verified decision-maker contacts tracked across these 55 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 29, 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.