Company lists · Data refreshed September 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 Data refreshed Sep 14, 2026 644 companies tracked

RevenueBase identified 644 algorithmic trading software companies headquartered in the United States as of September 2026 and tracks 20,226 professional contacts across them, including 8,641 with verified work emails. 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. 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

644Companies

20,226Contacts tracked

8,641Verified emails

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

Ranked by team size

Top 25 of 644 algorithmic trading software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to algorithmic trading software 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	Topstep	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	n/a	2,964 contacts →
	Partial evidence “Topstep didn’t enter the prop trading space.” Source: RevenueBase Database · checked Sep 14, 2026
2	Citadel Securities	Indirect evidence	Miami, FL, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,156 contacts →
	Indirect evidence “Citadel Securities is a technology-driven, next-generation global market maker.” Source: RevenueBase Database · checked Sep 14, 2026
3	Squarepoint	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,979 contacts →
	Indirect evidence “Squarepoint is a leading global investment management firm that develops quantitative investment strategies to achieve high quality returns for our clients.” Source: RevenueBase Database · checked Sep 14, 2026
4	Jump Trading	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,747 contacts →
	Partial evidence “For more than 25 years, Jump Trading has been home to people who see trading as the most fascinating problem in the world and want to solve it from every angle.” Source: RevenueBase Database · checked Sep 14, 2026
5	Tower Research Capital	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,327 contacts →
	Partial evidence “Tower Research Capital is a leading quantitative trading firm that has built its business on a high-performance platform and independent trading teams.” Source: RevenueBase Database · checked Sep 14, 2026
6	Flextrade	Partial evidence	Great Neck, NY, United StatesHQ checked Sep 14, 2026	501-1,000	682 contacts →
	Partial evidence “For 30 years, FlexTrade Systems has delivered customized multi‑asset execution and order management trading solutions to buy‑ and sell‑side financial institutions worldwide.” Source: RevenueBase Database · checked Sep 14, 2026
7	Instinet Incorporated	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	474 contacts →
	Partial evidence “When Instinet gave birth to electronic trading in 1969, we were a small tech-focused start-up with a simple point of view: technology can bring great efficiency to the financial…” Source: RevenueBase Database · checked Sep 14, 2026
8	Ninjatrader	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	201-500	429 contacts →
	Indirect evidence “NinjaTrader: Driving innovation, empowering traders, and building a global community.” Source: RevenueBase Database · checked Sep 14, 2026
9	Belvedere Trading, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	201-500	371 contacts →
	Partial evidence “In March of 2002, Belvedere Trading emerged as Chicago’s newest market makers, soon to join the ranks of the Windy City’s elite proprietary trading firms.” Source: RevenueBase Database · checked Sep 14, 2026
10	TS Imagine	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	292 contacts →
	Partial evidence “TS Imagine delivers a best-in-class SaaS platform for integrated electronic front-office trading, portfolio management, and financial risk management tools to the buy-side and…” Source: RevenueBase Database · checked Sep 14, 2026
11	EXEGY	Partial evidence	St. Louis, MO, United StatesHQ checked Sep 14, 2026	201-500	220 contacts →
	Partial evidence “Trade Better with Exegy \| Scalable, Reliable Market Data and Trading Infrastructure for Capital Markets Exegy powers global capital markets with low-latency, mission-critical…” Source: RevenueBase Database · checked Sep 14, 2026
12	Trafix LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	180 contacts →
	Indirect evidence “TRAFiX is a broker-neutral FinTech company providing cutting-edge, innovative Order & Execution Management solutions, as well as real-time FIX connectivity and normalized API…” Source: RevenueBase Database · checked Sep 14, 2026
13	Onezero Financial Systems	Partial evidence	Somerville, MA, United StatesHQ checked Sep 14, 2026	201-500	173 contacts →
	Partial evidence “oneZero develops multi-asset class trading technology, which empowers financial institutions and brokers to compete in today’s ever-changing global markets.” Source: RevenueBase Database · checked Sep 14, 2026
14	Headlands Technologies LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	51-200	170 contacts →
	Partial evidence “Headlands Technologies, LLC is a global quantitative trading company based in Chicago, with offices in New York, Austin, Amsterdam, London and Singapore.” Source: RevenueBase Database · checked Sep 14, 2026
15	Transmarket Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	51-200	162 contacts →
	Partial evidence “Founded in 1980 as Aardvark Financial, TransMarket Group (TMG) is a privately held global markets proprietary trading firm with offices in Chicago, Puerto Rico and Switzerland.” Source: RevenueBase Database · checked Sep 14, 2026
16	Chimera Securities, LLC	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	150 contacts →
	Partial evidence “Chimera Securities, LLC is a leading proprietary trading broker-dealer located in the heart of New York City.” Source: RevenueBase Database · checked Sep 14, 2026
17	Dash Financial Technologies	Partial evidence	New York, United StatesHQ checked Sep 14, 2026	51-200	144 contacts →
	Partial evidence “Dash Financial Technologies is a leading trading technology provider to the institutional trading community.” Source: RevenueBase Database · checked Sep 14, 2026
18	Kershner Trading Group	Partial evidence	Austin, TX, United StatesHQ checked Sep 14, 2026	51-200	130 contacts →
	Partial evidence “Kershner Trading Group, LLC, wants to be known as the best place in the world where short term traders make the most money and grow their career.” Source: RevenueBase Database · checked Sep 14, 2026
19	HPR	Partial evidence	Needham, MA, United StatesHQ checked Sep 14, 2026	51-200	123 contacts →
	Partial evidence “HPR is a comprehensive platform-as-a-service, pioneering hardware-based trading infrastructure solutions as the natural evolution in capital markets.” Source: RevenueBase Database · checked Sep 14, 2026
20	Simplex Trading LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	51-200	112 contacts →
	Partial evidence “As a leading, technology-driven, proprietary market-making firm, we work with the most advanced technology and software in the market.” Source: RevenueBase Database · checked Sep 14, 2026
21	Eagle Seven	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	51-200	108 contacts →
	Indirect evidence “Globally positioned, we combine the latest technology with a unique group of professional traders and innovative developers to achieve the highest results.” Source: RevenueBase Database · checked Sep 14, 2026
22	Quantlab Financial, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 14, 2026	51-200	106 contacts →
	Partial evidence “Quantlab is a quantitative trading firm where Technology and Scientific Research are central to our business and key to our success.” Source: RevenueBase Database · checked Sep 14, 2026
23	Spiderrock	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	51-200	95 contacts →
	Partial evidence “SpiderRock is a leading provider of advanced trading, risk management, and data solutions for global derivatives markets.” Source: RevenueBase Database · checked Sep 14, 2026
24	Flyer Financial Technologies	Partial evidence	NY, United StatesHQ checked Sep 14, 2026	51-200	85 contacts →
	Partial evidence “Legacy trading infrastructure can’t keep pace with the way modern wealth firms operate.” Source: RevenueBase Database · checked Sep 14, 2026
25	ETNA	Strong evidence	Boca Raton, FL, United StatesHQ checked Sep 14, 2026	51-200	81 contacts →
	Strong evidence “ETNA is a software development company empowering brokers, dealers, and financial advisors with trading, wealth management, and back-office solutions for 22+ years.” 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: algorithmic trading software 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 algorithmic trading software companies.
Partial evidence: Its own public description names part of algorithmic trading software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name algorithmic trading software 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 644 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 Sep 14, 2026

42.7%Verified-email coverage

31.4Average contacts per company

1-10Median size (employees)

18.0%Largest-city concentration · New York

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

389

11-50

172

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 644 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 algorithmic trading software 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 the United States whose own description of what they do matches “algorithmic trading software 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 algorithmic trading software 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 algorithmic trading software companies, 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, 8,641 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.

Algorithmic trading software companies by metro

Algorithmic trading software companies in New York116
Algorithmic trading software companies in Chicago81
Algorithmic trading software companies in Miami26
Algorithmic trading software companies in San Francisco25

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

RevenueBase identified 644 algorithmic trading software companies 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?

Topstep, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most algorithmic trading software companies?

New York leads with 116 headquartered companies, followed by Chicago (81) and Miami (26).

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 8,641 verified decision-maker contacts tracked across these 644 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.