Company lists · Data refreshed September 2026

Top 25 Investment management law firms based in the United States

RevenueBase identified 11,085 investment management law firms headquartered in the United States as of September 2026 and tracks 248,301 professional contacts across them, including 127,015 with verified work emails and 121,761 with mobile numbers. New York is the largest hub.

This list covers investment management law firms headquartered in the 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review
11,085Companies
248,301Contacts tracked
127,015Verified emails
121,761Mobile numbers
Unlock all 11,085 companies Free signup · no credit card · 500 free credits

The 25 largest investment management law firms based in the United States

Ranked by team size
Top 25 of 11,085 investment management law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names investment management law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Merrill LynchPartial evidence
New York, NY, United StatesHQ checked Sep 4, 202610001+32,861

“Founded in 1914, Merrill is one of the largest wealth management businesses in the world.”

Source: company website · checked Sep 4, 2026
2
Kirkland & EllisPartial evidence
Chicago, TX, United StatesHQ checked Sep 4, 20265,001-10,0008,319

“As one of the world’s leading law firms, we serve a broad range of clients with market-leading practices in private equity, M&A and other complex corporate transactions…”

Source: company website · checked Sep 4, 2026
3New York, NY, United StatesHQ checked Sep 4, 202610001+4,833

“At J.P.”

Source: company website · checked Sep 4, 2026
4
Mayer BrownPartial evidence
Chicago, TX, United StatesHQ checked Sep 4, 20261,001-5,0004,209

“Mayer Brown is a leading international law firm, positioned to represent the world’s major corporations, funds and financial institutions in their most important and complex…”

Source: company website · checked Sep 4, 2026
5
Paul HastingsIndirect evidence
Worldwide, CA, United StatesHQ checked Sep 4, 20261,001-5,0003,028

“With widely recognized elite teams in finance, mergers & acquisitions, private equity, restructuring and special situations, litigation, employment and real estate, Paul Hastings…”

Source: company website · checked Sep 4, 2026
6
Neuberger BermanPartial evidence
New York, NY, United StatesHQ checked Sep 4, 20261,001-5,0002,689

“Neuberger Berman is an employee-owned, private, independent investment manager founded in 1939 with 2,800 employees in 26 countries.”

Source: company website · checked Sep 4, 2026
7
Morrison FoersterIndirect evidence
San Francisco, DC, United StatesHQ checked Sep 4, 20261,001-5,0002,660

“Morrison Foerster transforms complexity into advantage.”

Source: company website · checked Sep 4, 2026
8New York, NY, United StatesHQ checked Sep 4, 20261,001-5,0002,652

“Paul, Weiss, Rifkind, Wharton & Garrison LLP is a global law firm of more than 1,500 lawyers focused on helping clients navigate their most complex legal and business challenges.”

Source: company website · checked Sep 4, 2026
9
Arnold & PorterIndirect evidence
Washington, DC, United StatesHQ checked Sep 4, 20261,001-5,0002,324

“Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.”

Source: company website · checked Sep 4, 2026
10
Proskauer Rose LLPIndirect evidence
New York, NY, United StatesHQ checked Sep 4, 20261,001-5,0002,091

“We are 800+ lawyers serving clients from offices located in the leading financial and business centers in the Americas, Europe and Asia.”

Source: company website · checked Sep 4, 2026
11
Dechert LLPPartial evidence
Philadelphia, PA, United StatesHQ checked Sep 4, 20261,001-5,0002,056

“Dechert is the law firm that helps business leaders lead.”

Source: company website · checked Sep 4, 2026
12Columbia, SC, United StatesHQ checked Sep 4, 20261,001-5,0002,036

“Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.”

Source: company website · checked Sep 4, 2026
13
Creative PlanningIndirect evidence
Overland Park, FL, United StatesHQ checked Sep 4, 20261,001-5,0001,851

“Independent wealth advisory firm Creative Planning and its affiliates manage and advise on 710 billion in combined assets and serve clients in all 50 states and abroad.* At…”

Source: company website · checked Sep 4, 2026
14
Venable LLPPartial evidence
Washington, DC, United StatesHQ checked Sep 4, 20261,001-5,0001,791

“Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…”

Source: company website · checked Sep 4, 2026
15
Federated HermesPartial evidence
Pittsburgh, PA, United StatesHQ checked Sep 4, 20261,001-5,0001,742

“Federated Hermes, Inc.(FHI) is one of the nation's largest investment managers offering equity, international, fixed income, alternative and money market strategies.”

Source: company website · checked Sep 4, 2026
16
Ballard Spahr LLPPartial evidence
Philadelphia, DC, United StatesHQ checked Sep 4, 20261,001-5,0001,720

“Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.”

Source: company website · checked Sep 4, 2026
17New York, FL, United StatesHQ checked Sep 4, 20261,001-5,0001,634

“At Rockefeller Capital Management, we aspire to bring the unique promise of the Rockefeller legacy together with a culture of innovation and cutting-edge technology to help…”

Source: company website · checked Sep 4, 2026
18Chicago, CA, United StatesHQ checked Sep 4, 20261,001-5,0001,493

“Katten is a full-service law firm with nearly 650 attorneys in locations across the United States and in London and Shanghai.”

Source: company website · checked Sep 4, 2026
19
Mercer AdvisorsIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 2026501-1,0001,417

“Are you looking to amplify and simplify your financial life?”

Source: company website · checked Sep 4, 2026
20
Clark Hill LAWIndirect evidence
Detroit, MI, United StatesHQ checked Sep 4, 20261,001-5,0001,355

“At Clark Hill, our value proposition is simple.”

Source: company website · checked Sep 4, 2026
21
Quarles & Brady LLPIndirect evidence
Milwaukee, WI, United StatesHQ checked Sep 4, 20261,001-5,0001,333

“For over 125 years, Quarles & Brady LLP has provided quality legal services to a wide range of industries on a national stage.”

Source: company website · checked Sep 4, 2026
22
Focus PartnersPartial evidence
Clayton, IL, United StatesHQ checked Sep 4, 20261,001-5,0001,238

“Focus is an organization of wealth, asset, and business management resources that brings strength, innovation, and partnership to client relationships.”

Source: company website · checked Sep 4, 2026
23
Hinshaw & Culbertson LLPPartial evidence
Chicago, CA, United StatesHQ checked Sep 4, 2026501-1,0001,193

“Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.”

Source: company website · checked Sep 4, 2026
24
Lord AbbettIndirect evidence
Jersey City, NJ, United StatesHQ checked Sep 4, 2026501-1,0001,181

“Our Vision We aspire to be the most respected asset manager in the world, admired for our people, our performance, our relationships, and our organizational agility.”

Source: company website · checked Sep 4, 2026
25
Stinson LLPIndirect evidence
500 Attorneys. 16 Locations Nationwide., CO, United StatesHQ checked Sep 4, 2026501-1,0001,170

“Stinson LLP collaborates with clients ranging from individuals and privately held enterprises to national companies and international public corporations.”

Source: company website · checked Sep 4, 2026

Showing 25 of 11,085 investment management law firms based in the United States

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Investment management law firms based in the United States at a glance

As of Sep 4, 2026
1-10Median size (employees)
New YorkLargest hub · 747 HQs
121,761Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
7,401
11-50
2,800
51-200
599
201-500
126
501-1,000
55
1,001-5,000
46
5,001-10,000
5
10001+
9

Verified emails by last verification

0–30
0
31–60
11,288
61–90
67,036
90–180
48,035
180+
656

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 investment management law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “investment management law firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among investment management law firms, and records with no verified work email. Companies headquartered outside United States 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 an evidence 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, 127,015 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 4, 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.

Investment management law firms by metro

Frequently asked

How many investment management law firms are there based in the United States?

RevenueBase identified 11,085 investment management law firms headquartered in the 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?

Merrill Lynch, headquartered in New York, tops this list with the largest team on record.

Which city has the most investment management law firms?

New York leads with 747 headquartered companies, followed by Chicago (258) and Atlanta (186).

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 127,015 verified decision-maker contacts tracked across these 11,085 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 4, 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.