Company lists · Data verified August 2026

Top 25 Algorithmic trading software companies based in the United States

Name: Algorithmic trading software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 638 companies tracked

There are 638 algorithmic trading software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 18,541 professional contacts across them, including 7,338 with verified work emails and 4,606 with mobile numbers. New York is the largest hub.

This list covers algorithmic trading software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

638Companies

18,541Contacts tracked

7,338Verified emails

4,606Mobile numbers

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The 25 largest algorithmic trading software companies based in the United States

Ranked by team size

Top 25 of 638 algorithmic trading software companies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	ION	Dallas, TX	10001+	3,700	2,167
2	Topstep	Chicago, IL	n/a	2,934	138
3	Citadel Securities	New York, NY	1,001-5,000	2,168	1,139
4	Tower Research Capital	New York, NY	1,001-5,000	1,307	950
5	Ninjatrader	Chicago, IL	201-500	432	217
6	Belvedere Trading, LLC	Boulder, CO	201-500	371	227
7	TS Imagine	New York, NY	201-500	292	207
8	EXEGY	St. Louis, MO	201-500	219	173
9	Genesis Global	Miami, FL	201-500	217	98
10	Quod Financial	New York	51-200	191	87
11	Trafix LLC	New York, NY	51-200	180	114
12	Transmarket Group	Chicago, IL	51-200	157	87
13	Chimera Securities, LLC	New York, NY	51-200	151	74
14	Dash Financial Technologies	York	51-200	143	59
15	Kershner Trading Group	Austin, TX	51-200	128	47
16	Simplex Trading LLC	Chicago, IL	51-200	111	94
17	Eagle Seven	Chicago, IL	51-200	108	97
18	Quantlab Financial, LLC	Houston, TX	51-200	106	7
19	Spiderrock	Chicago, IL	51-200	95	79
20	Istra Research LTD	New York, NY	51-200	89	72
21	Flyer Financial Technologies	NY	51-200	87	50
22	Enuit LLC	Houston, TX	51-200	84	39
23	ETNA	Boca Raton, FL	51-200	81	9
24	Crabel Capital Management, LLC	Los Angeles, CA	51-200	73	35
25	Sterling Trading Tech	Chicago, IL	51-200	70	39

Showing 25 of 638 algorithmic trading software companies based in the United States

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Algorithmic trading software companies based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 115 HQs

4,606Contacts with mobile numbers

38Emails re-verified in last 30 days

Companies by employee count

1-10

392

11-50

172

51-200

201-500

501-1,000

1,001-5,000

10001+

Algorithmic trading software companies by metro

Metro	Companies
Algorithmic trading software companies in New York	115
Algorithmic trading software companies in Chicago	67
Algorithmic trading software companies in Miami	24
Algorithmic trading software companies in San Francisco	22
Algorithmic trading software companies in Los Angeles	15
Algorithmic trading software companies in Austin	14
Algorithmic trading software companies in Orlando	10

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “algorithmic trading software companies”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 38 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many algorithmic trading software companies are there based in the United States?

There are 638 algorithmic trading software companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

ION, headquartered in Dallas, tops this list with the largest team on record.

Which city has the most algorithmic trading software companies?

New York leads with 115 headquartered companies, followed by Chicago (67) and Miami (24).

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 7,338 verified decision-maker contacts tracked across these 638 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.