Company lists · Data refreshed September 2026

Top 25 Outsourcing advisory firms based in the United States

Name: Outsourcing advisory firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 6,806 companies tracked

RevenueBase identified 6,806 company matches for outsourcing advisory firms associated with the United States as of September 2026 and tracks 75,123 professional contacts across them, including 29,679 with verified work emails. New York is the largest hub.

This list covers company matches for outsourcing advisory firms associated with the United States, 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 21, 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 21, 2026 How this list was built

6,806Companies

75,123Contacts tracked

29,679Verified emails

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The 25 largest outsourcing advisory firms based in the United States

Ranked by team size

Top 25 of 6,806 company matches for outsourcing advisory firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Alvarez & Marsal	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	10001+	13,099 contacts →
	Exact match “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Integreon	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	3,678 contacts →
	Exact match “Integreon is a trusted provider of legal, creative and business outsourced services to corporations and law firms worldwide.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Information Evolution, INC	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	1,238 contacts →
	Exact match “We are a boutique outsourcing firm specializing in keeping our customers' databases up-to-date, accurate, and as robust as possible.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Riveron	Exact match	Dallas, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,160 contacts →
	Exact match “With over 1,200 professionals across 18 international offices, Riveron delivers tailored solutions for CFOs, private equity firms, and key stakeholders.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	W3global	Exact match	Frisco, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	1,149 contacts →
	Exact match “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Zinnov	Exact match	The Woodlands, TX, United StatesHQ recorded Sep 21, 2026	201-500	1,101 contacts →
	Exact match “Zinnov is a full-stack global management consulting firm specializing in GCC set-up and scale-up, M&A, PE advisory, AI strategy, and partner ecosystem growth for technology…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Eclaro	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,024 contacts →
	Exact match “ECLARO is an award-winning Talent Solutions firm headquartered in New York City and operating in the U.S, Canada and the Philippines.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Perella Weinberg	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	883 contacts →
	Exact match “Perella Weinberg is a leading global independent financial services firm, founded in 2006 to address the need for experienced, trusted and unconflicted advice in the financial…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Clark Schaefer Hackett	Exact match	Dayton, OH, United StatesHQ recorded Sep 21, 2026	501-1,000	683 contacts →
	Exact match “Clark Schaefer Hackett is more than an accounting and advisory firm; we’re striving to be your most valued advisor.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Not Available	Exact match	Na, United StatesHQ recorded Sep 21, 2026	n/a	658 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Global Strategic Business Process Solutions	Exact match	Burlington, NC, United StatesHQ recorded Sep 21, 2026	1,001-5,000	553 contacts →
	Exact match “Global Strategic is a business process outsourcing partner that builds high-performing teams through custom onshore, nearshore, and offshore solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Pride Global	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	448 contacts →
	Exact match “Pride Global is a minority-owned integrated human capital solutions & advisory firm headquartered in New York with operating companies throughout the United States, United…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Valueonshore 'vos' Advisors	Exact match	San Jose, CA, United StatesHQ recorded Sep 21, 2026	501-1,000	429 contacts →
	Exact match “Valueonshore (‘VOS’) Advisors is a global business advisory services firm of Big 4 alumni and industry executives.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	The Functionary	Exact match	Aubrey, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	415 contacts →
	Exact match “The Functionary helps companies scale operations around the reality of their business, not a standard model.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Outsource Partners International Alumni	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	397 contacts →
	Exact match “Outsource Partners International (OPI) is a professional services firm dedicated to the outsourcing of finance, accounting, and analytics business processes.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	CC Pace	Exact match	Fairfax, VA, United StatesHQ recorded Sep 21, 2026	51-200	390 contacts →
	Exact match “CC Pace is a trusted partner with 40+ years of experience helping organizations achieve lasting success.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	EDS Service Solutions	Exact match	Atlanta, GA, United StatesHQ recorded Sep 21, 2026	5,001-10,000	342 contacts →
	Exact match “EDS service solutions is the number one outsourcing solution for Fortune 500 companies throughout the US.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Sellside Group, LLC	Exact match	Dallas, TX, United StatesHQ recorded Sep 21, 2026	51-200	339 contacts →
	Exact match “Selling a business is one of the most important financial decisions you'll ever make.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	ATS	Exact match	Cambridge, United StatesHQ recorded Sep 21, 2026	n/a	313 contacts →
	Exact match “ATS – 40 Years: Advancing Projects, Boosting Profits, and Cutting Costs For over 40 years, ATS has partnered with organizations worldwide to deliver outstanding results.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Montpac	Exact match	Granite Bay, CA, United StatesHQ recorded Sep 21, 2026	201-500	298 contacts →
	Exact match “Montgomery Pacific Corporation (MontPac) is an outsourced accounting and financial management firm with personnel in the US, UK, and the Philippines.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	World Connection	Exact match	Boise, ID, United StatesHQ recorded Sep 21, 2026	1,001-5,000	284 contacts →
	Exact match “World Connection helps founder-led, private equity-backed, and growth-stage small to mid-market companies transform customer experience into measurable business outcomes.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Managed Labor Solutions	Exact match	Allentown, PA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	275 contacts →
	Exact match “Managed Labor Solutions (MLS) is a unique provider of outsourced labor to companies large and small.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	NPI	Exact match	Atlanta, GA, United StatesHQ recorded Sep 21, 2026	51-200	267 contacts →
	Exact match “NPI is an IT procurement advisory services company that helps enterprises identify and eliminate overspending on IT purchases.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	SAPRO	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	252 contacts →
	Exact match “SAPRO is a global, tech-enabled talent outsourcing firm specializing in Assurance, Tax, Advisory, and Client Accounting Services (CAS).” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Bridgepoint Consulting	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	201-500	250 contacts →
	Exact match “Bridgepoint Consulting, an Addison Group company, is a leading management consulting firm that offers a full suite of services and solutions to help companies navigate the…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “outsourcing advisory firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 6,806 outsourcing advisory firms based in the United States

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Outsourcing advisory firms based in the United States at a glance

As of Sep 21, 2026

39.5%Verified-email coverage

11.0Average contacts per company

1-10Median size (employees)

7.6%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

4,930

11-50

1,369

51-200

365

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 6,806 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 the United States whose business descriptions match “outsourcing advisory 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 29,679 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 21, 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.

Outsourcing advisory 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 “outsourcing advisory firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsourcing advisory firms are there based in the United States?

RevenueBase identified 6,806 company matches for outsourcing advisory firms associated with the United States 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?

Alvarez & Marsal tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most outsourcing advisory firms?

New York leads with 517 company records, followed by Atlanta (171) and Chicago (163).

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 29,679 professional contacts with verified work emails tracked across these 6,806 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 21, 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 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.