Company lists · Data refreshed September 2026
Top 25 Due diligence consulting firms based in New York, United States
RevenueBase identified 358 due diligence consulting firms headquartered in New York, United States as of September 2026 and tracks 14,406 professional contacts across them, including 6,056 with verified work emails and 3,570 with mobile numbers. New York is the largest hub.
This list covers due diligence consulting firms headquartered in New York, 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 11, 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 due diligence consulting firms based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,912 contacts → | ||||
Indirect evidence “Founded in 1848, Lazard is the preeminent financial advisory and asset management firm, with operations in North and South America, Europe, the Middle East, Asia, and Australia.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,296 contacts → | ||||
Indirect evidence “Evercore (NYSE: EVR) is a premier global independent investment banking advisory firm.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 3 | 904 contacts → | ||||
Indirect evidence “Nassau Street Partners is an independent capital advisory firm focused on mergers and acquisitions, capital markets advisory, and strategic financial solutions for early-stage and…” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 4 | 883 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 5 | 693 contacts → | ||||
Indirect evidence “Centerview Partners is a premier provider of independent investment-banking advisory services.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 6 | 625 contacts → | ||||
Indirect evidence “Greenhill & Co, Inc.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 7 | 427 contacts → | ||||
Indirect evidence “Solomon Partners is a leading investment bank – one of the first independent firms in the industry.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 8 | 142 contacts → | ||||
Indirect evidence “We are an Independent Financial Services & Business Advisory Firm In business, it is crucial to track every dollar that goes in and out; each business decision impacts your…” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 9 | 110 contacts → | ||||
Indirect evidence “We are global M&A and financial advisory professionals, determined to help ambitious entrepreneurs and evolving companies reach their full potential.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 10 | 107 contacts → | ||||
Indirect evidence “Ardea Partners is a boutique investment bank that takes a differentiated approach to financial advisory services where we view our clients as partners.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 11 | 99 contacts → | ||||
Indirect evidence “Ducera Partners is a leading investment banking advisory practice focused on providing trusted, independent advice and innovative solutions to decision makers in complex and…” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 12 | 92 contacts → | ||||
Indirect evidence “TM Capital, now part of Capstone Partners, is the client-first investment banking team advising industry-leading companies across North America.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 13 | 83 contacts → | ||||
Indirect evidence “Oberon Securities LLC (“Oberon”) is a New York City based investment bank that provides buy-side/sell-side M&A advisory and private equity/debt financing services.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 14 | 80 contacts → | ||||
Indirect evidence “Bentley Associates L.P.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 15 | 79 contacts → | ||||
Indirect evidence “For 40 years*, Berkshire Global Advisors has been a leading provider of trusted M&A and strategic advice to the financial services industry.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 16 | 78 contacts → | ||||
Indirect evidence “GLC Advisors & Co.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 17 | 75 contacts → | ||||
Strong evidence “Blue Heron Research Partners is an international leader in qualitative due diligence.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 18 | 73 contacts → | ||||
Indirect evidence “M3 Partners is a corporate advisory firm that specializes in maximizing performance and creating long term value for its clients.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 19 | 64 contacts → | ||||
Indirect evidence “ThinkEquity is a boutique investment bank created by experienced professionals that have worked together for over a decade, collectively financing over $50 billion of public and…” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 20 | 57 contacts → | ||||
Indirect evidence “Broadhaven is an independent investment bank serving the financial services industry.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 21 | 44 contacts → | ||||
Indirect evidence “GreensLedge is a global investment banking and advisory firm established in 2008 with the belief that there is an opportunity within the global capital markets for a firm to offer…” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 22 | 42 contacts → | ||||
Strong evidence “Hilton Global Associates is a professional investigative research firm providing expert due diligence and unparalleled client service.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 23 | 42 contacts → | ||||
Indirect evidence “HPIS helps decision-makers increase productivity by delegating their analytical tasks to us.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 24 | 40 contacts → | ||||
Indirect evidence “Across every industry and through the most challenging market conditions, we offer business owners superior financial advice on all aspects of selling a business.” Source: RevenueBase Database · checked Sep 11, 2026Thanks. The Data Team will review it. | |||||
| 25 | 39 contacts → | ||||
Indirect evidence “BrightTower is a New York City-headquartered investment bank focused on M&A advisory services, capital raising, and debt capital markets.” Source: RevenueBase Database · checked Sep 11, 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: due diligence consulting 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 due diligence consulting firms.
- Partial evidence
- Its own public description names part of due diligence consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name due diligence consulting 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 358 due diligence consulting firms based in New York, United States
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Due diligence consulting firms based in New York, United States at a glance
As of Sep 11, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 13.0dCompany record updated
Median 49.0dHow 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 due diligence consulting 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 New York, United States whose own description of what they do matches “due diligence consulting 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 due diligence consulting 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 due diligence consulting firms, and records with no verified work email. Companies headquartered outside New York 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, 6,056 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 11, 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.
Due diligence consulting firms by metro in the United States
- Due diligence consulting firms in New York30
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 due diligence consulting 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 due diligence consulting firms are there based in New York, United States?
RevenueBase identified 358 due diligence consulting firms headquartered in New York, 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?
Lazard, headquartered in New York, tops this list with the largest team on record.
Which city has the most due diligence consulting firms?
New York leads with 30 headquartered companies, followed by Chicago (13) and Washington (12).
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 6,056 verified decision-maker contacts tracked across these 358 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 11, 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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