Company lists · Data refreshed September 2026

Top 25 Venture capital portfolio companies based in Boston, United States

Name: Venture capital portfolio companies based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 128 companies tracked

RevenueBase identified 128 venture capital portfolio companies headquartered in Boston, United States as of September 2026 and tracks 1,745 professional contacts across them, including 671 with verified work emails. New York is the largest hub.

This list covers venture capital portfolio companies headquartered in Boston, 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 14, 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 14, 2026 86% judged on-target in blind review

128Companies

1,745Contacts tracked

671Verified emails

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The 25 largest venture capital portfolio companies based in Boston, United States

Ranked by team size

Top 25 of 128 venture capital portfolio companies based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to venture capital portfolio companies: 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	RA Capital Management	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	201-500	251 contacts →
	Partial evidence “Founded in 2004, RA Capital Management is an active, multi-stage investment manager dedicated to evidence-based, science-led investing in public and private healthcare, life…” Source: RevenueBase Database · checked Sep 14, 2026
2	Battery Ventures	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	211 contacts →
	Indirect evidence “Battery invests in potentially cutting-edge, category-defining businesses in markets including application software, IT infrastructure technologies, consumer-internet and mobile…” Source: RevenueBase Database · checked Sep 14, 2026
3	FA Technology Ventures	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	n/a	109 contacts →
	Strong evidence “FA Technology Ventures is an independent, established venture capital firm.” Source: RevenueBase Database · checked Sep 14, 2026
4	Polaris Partners	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	55 contacts →
	Indirect evidence “Exceptional entrepreneurs.” Source: RevenueBase Database · checked Sep 14, 2026
5	Openview	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	47 contacts →
	Strong evidence “OpenView is a venture capital firm on a mission to change the way the world works.” Source: RevenueBase Database · checked Sep 14, 2026
6	Glasswing Ventures	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	45 contacts →
	Strong evidence “Glasswing Ventures is an early stage venture capital firm investing in the next generation of AI and frontier technology startups that are enabling the rise of the intelligent…” Source: RevenueBase Database · checked Sep 14, 2026
7	Companyon Ventures	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	n/a	41 contacts →
	Indirect evidence “We back just a few fast-moving, founder-led B2B startups each year.” Source: RevenueBase Database · checked Sep 14, 2026
8	M33 Growth	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	38 contacts →
	Partial evidence “M33 Growth is a venture and growth stage investment firm that seeks to partner with founders and CEOs to rapidly scale their companies and break through as industry leaders.” Source: RevenueBase Database · checked Sep 14, 2026
9	PJC	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	n/a	38 contacts →
	Strong evidence “PJC is an early-stage venture capital firm focused on investing in, supporting, and building relationships with entrepreneurs who are creating the future.” Source: RevenueBase Database · checked Sep 14, 2026
10	Venture Guides	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	36 contacts →
	Strong evidence “Venture Guides is an early-stage infrastructure software investment firm with a unique team based approach that has resulted in over 80% of portfolio companies generating positive…” Source: RevenueBase Database · checked Sep 14, 2026
11	Conjoin Group	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	201-500	36 contacts →
	Strong evidence “The ConJoin Group aligns with Venture Capital and Private Equity firms by investing our own capital,$250M in committed funds, and delivering a suite of services designed to…” Source: RevenueBase Database · checked Sep 14, 2026
12	Mendoza Ventures	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	n/a	34 contacts →
	Partial evidence “Firm overview Mendoza Ventures is an early-stage and growth venture fund based in Boston.” Source: RevenueBase Database · checked Sep 14, 2026
13	Elephant	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	27 contacts →
	Strong evidence “Elephant is a venture capital firm focused on investing in fast-growing, capital-efficient technology companies.” Source: RevenueBase Database · checked Sep 14, 2026
14	Raptor Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	27 contacts →
	Indirect evidence “At The Raptor Group, we source and invest in companies across various stages and asset classes, ranging from early stage to both private and public equity to funds.” Source: RevenueBase Database · checked Sep 14, 2026
15	Digital Fuel Capital	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	26 contacts →
	Indirect evidence “We are passionate about digital marketing: the marriage of science and art, the ability to test and innovate rapidly and the opportunities to serve distinct consumer interests and…” Source: RevenueBase Database · checked Sep 14, 2026
16	Equal Opportunity Ventures	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	21 contacts →
	Partial evidence “EO Ventures invests in early-stage businesses that increase opportunity in America.” Source: RevenueBase Database · checked Sep 14, 2026
17	January Ventures	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	21 contacts →
	Partial evidence “January Ventures is a VC fund focused on angel/pre-seed in the US & Europe.” Source: RevenueBase Database · checked Sep 14, 2026
18	SSC Venture Partners	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	20 contacts →
	Strong evidence “SSC Venture Partners is a venture capital fund made up of BC alums who love entrepreneurship and want to see BC alumni and students successfully launch their own companies.” Source: RevenueBase Database · checked Sep 14, 2026
19	Techrupt Innovations	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	19 contacts →
	Partial evidence “We are a venture studio building and investing in transformative companies across ed tech, AI, consumer products, and B2B SaaS.” Source: RevenueBase Database · checked Sep 14, 2026
20	Saturn Partners	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	15 contacts →
	Strong evidence “Since 1993, Saturn has been an opportunistic investor that takes a hands-on approach to investing in proprietary seed and early stage venture capital opportunities located…” Source: RevenueBase Database · checked Sep 14, 2026
21	CUE Ball Capital	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	14 contacts →
	Strong evidence “Cue Ball is a venture capital firm built on a distinct, human capital-centric philosophy.” Source: RevenueBase Database · checked Sep 14, 2026
22	Myriad Venture Partners	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	14 contacts →
	Partial evidence “An early-stage venture firm defining the future of business solutions.” Source: RevenueBase Database · checked Sep 14, 2026
23	Liquidmetal Ventures	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	13 contacts →
	Strong evidence “LiquidMetal Ventures is a Boston based, early-stage focused venture capital fund focusing on Energy & Sustainability, Biotech & Healthcare and AI & Robotics, with a mission…” Source: RevenueBase Database · checked Sep 14, 2026
24	Foundersedge	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	12 contacts →
	Indirect evidence “FoundersEdge is a data-driven pre-seed fund investing in exceptional founders using technology to change the world.” Source: RevenueBase Database · checked Sep 14, 2026
25	Romulus Capital	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	11 contacts →
	Indirect evidence “We're hiring!” Source: RevenueBase Database · checked Sep 14, 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: venture capital portfolio companies. 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 venture capital portfolio companies.
Partial evidence: Its own public description names part of venture capital portfolio companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name venture capital portfolio companies. 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 128 venture capital portfolio companies based in Boston, United States

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Venture capital portfolio companies based in Boston, United States at a glance

As of Sep 14, 2026

38.5%Verified-email coverage

13.6Average contacts per company

1-10Median size (employees)

412.5%Largest-city concentration · New York

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

103

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 128 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 venture capital portfolio companies, 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 Boston, United States whose own description of what they do matches “venture capital portfolio companies”. 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 venture capital portfolio companies), 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 venture capital portfolio companies, and records with no verified work email. Companies headquartered outside Boston 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, 671 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 14, 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.

Venture capital portfolio companies 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 venture capital portfolio companies, 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 venture capital portfolio companies are there based in Boston, United States?

RevenueBase identified 128 venture capital portfolio companies headquartered in Boston, 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?

RA Capital Management, headquartered in Boston, tops this list with the largest team on record.

Which city has the most venture capital portfolio companies?

New York leads with 528 headquartered companies, followed by San Francisco (490) and Palo Alto (155).

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 671 verified decision-maker contacts tracked across these 128 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 14, 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.