Company lists · Data refreshed September 2026

Top 25 Impact investment firms based in the United States

Name: Impact investment 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 3, 2026 925 companies tracked

RevenueBase identified 925 impact investment firms headquartered in the United States as of September 2026 and tracks 9,053 professional contacts across them, including 3,902 with verified work emails and 3,929 with mobile numbers. New York is the largest hub.

This list covers impact investment 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 3, 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 3, 2026 86% judged on-target in blind review

925Companies

9,053Contacts tracked

3,902Verified emails

3,929Mobile numbers

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The 25 largest impact investment firms based in the United States

Ranked by team size

Top 25 of 925 impact investment firms based in the United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to impact investment 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	Allspring Global Investments	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,106 contacts →
	Indirect evidence “Allspring is welcoming a new era of investing that pursues both financial returns and positive outcomes.” Source: RevenueBase Database · checked Sep 3, 2026
2	Tiger Global	Partial evidence	New York, NY, United StatesHQ checked Sep 3, 2026	51-200	281 contacts →
	Partial evidence “Tiger Global is a research-driven investment firm pursuing a long-term approach to partnering with high-quality, innovative companies across different stages of their lifecycle.” Source: RevenueBase Database · checked Sep 3, 2026
3	Advantage Capital	Strong evidence	New Orleans, CA, United StatesHQ checked Sep 3, 2026	51-200	240 contacts →
	Strong evidence “Advantage Capital is an impact investment firm with an emphasis on driving capital to underserved areas – often in partnership with the public sector.” Source: RevenueBase Database · checked Sep 3, 2026
4	The Vistria Group	Strong evidence	Chicago, IL, United StatesHQ checked Sep 3, 2026	51-200	146 contacts →
	Strong evidence “The Vistria Group is building a new kind of private investment firm that seeks to deliver both financial returns and societal impact.” Source: RevenueBase Database · checked Sep 3, 2026
5	REDF	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 3, 2026	51-200	111 contacts →
	Indirect evidence “For 25 years, REDF has invested in businesses that reveal and reinforce the talent of people overcoming barriers to employment.” Source: RevenueBase Database · checked Sep 3, 2026
6	AXA Investment Managers	Partial evidence	New York City, NY, United StatesHQ checked Sep 3, 2026	10001+	106 contacts →
	Partial evidence “Equity and Fixed Income Products Sustainable investments (ESG) Alternative assets (e.g.” Source: RevenueBase Database · checked Sep 3, 2026
7	Parnassus Investments	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 3, 2026	51-200	98 contacts →
	Partial evidence “Since 1984, Parnassus Investments has invested differently.” Source: RevenueBase Database · checked Sep 3, 2026
8	The Global Impact Investing Network	Partial evidence	New York, NY, United StatesHQ checked Sep 3, 2026	11-50	91 contacts →
	Partial evidence “The Global Impact Investing Network, Inc.(GIIN) is the leading industry body for impact investing.” Source: RevenueBase Database · checked Sep 3, 2026
9	Delphos	Indirect evidence	Washington, DC, United StatesHQ checked Sep 3, 2026	51-200	87 contacts →
	Indirect evidence “At Delphos, we believe that progress and sustainability drive everyone’s aspirations, regardless of geography, religion or ethnicity.” Source: RevenueBase Database · checked Sep 3, 2026
10	SEAF	Partial evidence	Washington, DC, United StatesHQ checked Sep 3, 2026	51-200	83 contacts →
	Partial evidence “Small Enterprise Assistance Funds (SEAF) is a global impact private equity manager focused on providing growth capital and operational support to small and medium-sized…” Source: RevenueBase Database · checked Sep 3, 2026
11	Calvert Research And Management	Indirect evidence	Washington, DC, United StatesHQ checked Sep 3, 2026	51-200	77 contacts →
	Indirect evidence “Calvert Research and Management is a leader in Responsible Investing.” Source: RevenueBase Database · checked Sep 3, 2026
12	Trillium Asset Management	Partial evidence	Boston, CA, United StatesHQ checked Sep 3, 2026	11-50	76 contacts →
	Partial evidence “Trillium Asset Management offers investment strategies and services that advance humankind towards a global sustainable economy, a just society, and a better world.” Source: RevenueBase Database · checked Sep 3, 2026
13	Social Investment Managers & Advisors Sima Funds	Strong evidence	New York, NY, United StatesHQ checked Sep 3, 2026	51-200	68 contacts →
	Strong evidence “SIMA Funds is a pioneering impact investment firm and social asset manager dedicated to transforming lives at the Bottom of the Pyramid (BoP).” Source: RevenueBase Database · checked Sep 3, 2026
14	Rising Realty Partners	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 3, 2026	11-50	66 contacts →
	Partial evidence “Rising Realty Partners is a Los Angeles-based real estate investment and operating firm, focused on acquiring, developing, and managing world-class commercial properties across…” Source: RevenueBase Database · checked Sep 3, 2026
15	Cultivo	Partial evidence	Berkeley, CA, United StatesHQ checked Sep 3, 2026	11-50	63 contacts →
	Partial evidence “Cultivo accelerates investment into nature at scale.” Source: RevenueBase Database · checked Sep 3, 2026
16	Tuck Advisors	Indirect evidence	New Hope, PA, United StatesHQ checked Sep 3, 2026	11-50	63 contacts →
	Indirect evidence “Our firm was founded by serial entrepreneurs who believe founder-CEOs deserve better M&A support.” Source: RevenueBase Database · checked Sep 3, 2026
17	ICA Fund	Partial evidence	West Oakland, CA, United StatesHQ checked Sep 3, 2026	11-50	62 contacts →
	Partial evidence “ICA Fund’s impact investing practice creates pathways for businesses to grow through active partnership, personalized advising, and flexible capital.” Source: RevenueBase Database · checked Sep 3, 2026
18	Grassroots Business Fund	Indirect evidence	Washington, DC, United StatesHQ checked Sep 3, 2026	11-50	61 contacts →
	Indirect evidence “Grassroots Business Fund (GBF) strives to create a world where economic opportunity reaches everyone, growing viable businesses that generate sustainable earnings or savings for…” Source: RevenueBase Database · checked Sep 3, 2026
19	Impactassets	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 3, 2026	51-200	60 contacts →
	Partial evidence “ImpactAssets is an impact investing trailblazer, dedicated to changing the trajectory of our planet’s future and improving the lives of all people.” Source: RevenueBase Database · checked Sep 3, 2026
20	The Cashmere Fund	Indirect evidence	Boulder, CO, United StatesHQ checked Sep 3, 2026	n/a	60 contacts →
	Indirect evidence “The Cashmere Fund invests in companies we believe can benefit from influence to grow faster than their competitors.” Source: RevenueBase Database · checked Sep 3, 2026
21	Calvert Impact	Strong evidence	Bethesda, MD, United StatesHQ checked Sep 3, 2026	11-50	58 contacts →
	Strong evidence “Calvert Impact is a global impact investment firm that helps everyday investors and financial professionals invest in solutions that benefit people and the planet.” Source: RevenueBase Database · checked Sep 3, 2026
22	RSF Regenerative Social Finance	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 3, 2026	11-50	58 contacts →
	Indirect evidence “RSF’s mission is to change finance and finance change.” Source: RevenueBase Database · checked Sep 3, 2026
23	Capricorn Investment Group	Partial evidence	Palo Alto, NY, United StatesHQ checked Sep 3, 2026	11-50	53 contacts →
	Partial evidence “One of the largest mission-aligned firms in the world, Capricorn Investment Group was born from a belief that sustainable investment practices can enhance risk-adjusted returns.” Source: RevenueBase Database · checked Sep 3, 2026
24	Sandbox Industries	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 3, 2026	11-50	51 contacts →
	Indirect evidence “Sandbox Industries fosters innovation to drive lasting change in industries that are crucial to our future: healthcare, insurance and sustainability.” Source: RevenueBase Database · checked Sep 3, 2026
25	E8 Angels	Partial evidence	Seattle, WA, United StatesHQ checked Sep 3, 2026	n/a	49 contacts →
	Partial evidence “E8 is a nonprofit membership community of over 140 impact investors dedicated to funding high-impact cleantech startups.” Source: RevenueBase Database · checked Sep 3, 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: impact investment 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 impact investment firms.
Partial evidence: Its own public description names part of impact investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name impact investment 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 925 impact investment firms based in the United States

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Impact investment firms based in the United States at a glance

As of Sep 3, 2026

43.1%Verified-email coverage

43.4%Mobile-number coverage

9.8Average contacts per company

1-10Median size (employees)

15.1%Largest-city concentration · New York

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

652

11-50

227

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

30431–60

2,24661–90

1,33390–180

19180+

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 impact investment 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 the United States whose own description of what they do matches “impact investment 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 impact investment 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 impact investment 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 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, 3,902 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 3, 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.

Impact investment firms by metro

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 impact investment 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 impact investment firms are there based in the United States?

RevenueBase identified 925 impact investment 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?

Allspring Global Investments, headquartered in Charlotte, tops this list with the largest team on record.

Which city has the most impact investment firms?

New York leads with 140 headquartered companies, followed by San Francisco (61) and Washington (38).

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 3,902 verified decision-maker contacts tracked across these 925 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 3, 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.