3 Houston companies land on Deloitte’s Technology Fast 500 list

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Three Houston companies ranked on Deloitte's annual list, with two cracking the top 100. Photo via Getty Images

Three Houston companies have made this year’s Deloitte North America Technology Fast 500 list.

The report ranks the fastest-growing technology, media, telecommunications, life sciences, fintech, and energy tech companies in North America. The Houston companies to make the list, along with their revenue growth rates from 2021-2024, include:

  • No. 16 Action1 Corp., a provider of cybersecurity software. Growth rate: 7,265 percent
  • No. 92 Cart.com, a commerce and logistics platform. Growth rate: 1,053 percent
  • No. 312 Tellihealth, a remote health care platform. Growth rate: 244 percent

“Houston’s unique blend of entrepreneurial energy and innovation continues to strengthen the local business community, and I’m thrilled to see Houston companies honored on the 2025 Deloitte Technology Fast 500 list. Congratulations to all the winners,” said Melinda Yee, managing partner in Deloitte’s Houston office.

Action1 is no stranger to lists like the Deloitte Technology Fast 500. For instance, the company ranked first among software companies and 29th overall on this year’s Inc. 5000, a list of the country’s fastest-growing private companies. Its growth rate from 2021 to 2024 reached 7,188 percent.

Mike Walters, president and co-founder of Action1, said in August that the Inc. 5000 achievement “reflects the dedication of Action1’s global team, who continue to execute against an ambitious vision: a world where cyberattacks exploiting vulnerabilities are entirely prevented across all types of devices, operating systems, and applications.”

Atlanta-based Impericus, operator of an AI-powered platform that connects health care providers with pharmaceutical and life sciences companies, topped the Deloitte list with a 2021-24 growth rate of 29,738 percent.

“Our mission is to set the standard for ethical AI-powered physician connections to pharma resources, accelerating and expanding patient access to needed treatments,” said Dr. Osama Hashmi, a dermatologist who’s co-founder and CEO of Impiricus. “As we continue to innovate quickly, we remain committed to building ethical bridges across this vital ecosystem.”

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These are the four fastest-growing tech companies in Houston, according to Deloitte. Photo by Shobeir Ansar/Getty Images

4 fast-growing Houston tech companies secure spots on Deloitte list

big wins

Deloitte’s annual North America Technology Fast 500 list includes four Houston companies this year — all boasting of significant growth.

For Houston, Direct Digital Holdings, Inc. took the highest-ranking spot at No. 101 (up from 108 previous year) with 1,184 percent growth. NatGas Hub LLC (No. 286, 407 percent growth), Liongard (No. 437, 246 percent growth), and Stratus Medical LLC (No. 483, 212 percent growth) also made the list, which is an annual ranking of the fastest-growing North American companies in technology, energy tech sectors, telecommunications, life sciences, media, and fintech.

"Houston continues to demonstrate its prowess in fostering growth and technological advancement and I’m incredibly proud to see some of our local companies making significant strides and earning their well-deserved spots on the 2024 Deloitte Technology Fast 500 list,” Houston managing partner at Deloitte Melinda Yee says in a news release.

Award winners were selected based on fiscal year revenue growth from 2019 to 2022.

The companies achieved revenue growth ranging from 201 percent to 153,625 percent over the three-year time frame with an average growth rate of 1,981 percent and a median growth rate of 460 percent, according to a news release. Texas accounts for 6 percent of the winning companies with 73 percent of the companies from Texas are in the software sector.

“These companies exemplify the entrepreneurial spirit and innovative mindset that define Houston's dynamic business ecosystem,” Yee adds.

In 2023, the Houston representation looked similar. Direct Digital Holdings again topped the Houston rankings at No. 108, with Liongard, NatGasHub.com, and P97 Networks also showing substantial growth. As a state, Texas had 30 companies that made the list of the 541 ranked. In 2022, just one Houston company was recognized, as at No. 372 Onit reported revenue increase of 369 percent.

Biopharmaceutical company TG Therapeutics, Inc. was the No.1 spot in 2024 with a growth rate of 153,625 percent from 2020 to 2023. See the full list here.
Three Houston tech companies are seeing big business growth, according to Deloitte's report. Graphic via Deloitte

3 Houston companies make Deloitte's fastest-growing tech list

biz is booming

Three Houston companies have earned spots on this year's edition of the North American Technology Fast 500.

The three Houston honorees are:

  • Enercross, a provider of logistics software for the energy sector. It appears at No. 31 on the Fast 500 list, with revenue growth of 6,230 percent from 2017 to 2020.
  • Onit, which offers workflow and AI technology for legal, compliance, sales, IT, HR, and finance departments. It lands at No. 304, with a 408 percent rise in revenue from 2017 to 2020. According to Crunchbase, Onit has reeled in $216.6 million in venture capital.
  • Graylog, a provider of log management software. It sits at No. 309, with revenue growth of 402 percent from 2017 to 2020. Graylog has collected $27.4 million in venture capital, according to Crunchbase. That includes an $18 million round announced this summer.

The North America Technology Fast 500, sponsored by professional services firm Deloitte, is an annual ranking of the fastest-growing tech, media, telecom, life sciences, and energy tech companies in North America.

"The Houston companies on this year's Fast 500 list are transforming the way our city does business by combining technological innovation with entrepreneurial spirit," Amy Chronis, Houston managing partner at Deloitte, says in a news release. "I'm inspired by the ways these organizations have succeeded amid unprecedented times, and I look forward to seeing their progress in 2022."

The top-ranked company is Irvine, California-based medical device company Axonics, whose revenue soared 87,037 percent from 2017 to 2020. The top-ranked Texas company is Austin-based Shipwell, where revenue climbed 32,670 percent from 2017 to 2020. Shipwell provides a shipment-tracking platform. Overall, 5 percent of the Fast 500 companies are based in Texas.

Both Enercross and Onit showed up on last year's Fast 500. Enercross ranked 37th in 2020, with revenue growth of 5,881 percent, and Onit ranked 190th, with revenue growth of 641 percent. Meanwhile, Graylog is a new entrant this year.

Two Houston companies fell off the Fast 500 this year:

  • Lexicon Pharmaceuticals, which ranked 328th last year with revenue growth of 306 percent.
  • Vendor Credentialing Services (symplr), a tech platform that simplifies vendor services, compliance, and more for health professionals. It appeared at No. 426 last year, notching revenue growth of 221 percent.

Not surprisingly, Silicon Valley accounted for one-fifth of the companies in this year's Fast 500, followed by the New York City metro area (12 percent) and New England (8 percent). Nearly three-fourths of the Fast 500 companies specialize in software, and 81 percent of the companies have received venture capital at some point.

"Each year, the Technology Fast 500 shines a light on leading innovators in technology, and this year is no exception," says Paul Silverglate, leader of the U.S. technology sector at Deloitte. "In the face of innumerable challenges resulting from the pandemic, the best and brightest were able to pivot, reinvent and transform and grow."

Four Houston-based companies have been ranked among the country's fastest growing tech businesses. Photo via Getty Images

4 Houston companies make fastest-growing tech biz list

H-town representing

In a newly released annual ranking, four Houston-based technology companies scored spots.

Deloitte's 26th annual North America Technology Fast 500 is an annual ranking of the fastest-growing North American companies across tech sectors. The companies on the list were selected based on percentage fiscal year revenue growth from 2016 to 2019. The Houston companies that made the top 500 were:

  • No. 37 (5,881 percent growth): Enercross — An oil and gas logistics software company.
  • No. 190 (641 percent growth): Onit — A B2B software company that designs streamlining solutions.
  • No. 328 (306 percent growth): Lexicon Pharmaceuticals Inc. — A biopharmaceutical company developing treatments for diseases.
  • No. 426 (221 percent growth): Vendor Credentialing Services (aka symplr)— A tech platform that simplifies vendor services, compliance, and more for health professionals.

"The varied industries represented in this year's local Fast 500 winners is evidence of Houston's positive momentum in diversifying its core competencies beyond the energy sector," says Amy Chronis, Houston managing partner at Deloitte, in the release. "Innovation continues to be the driving force behind our city's evolution, and the Fast 500 winners are helping spur its progress. They inspire and provide a glimpse into our future."

According to the release, the 2020 Technology Fast 500 companies achieved revenue growth ranging from 175 percent to 106,508 percent over the three-year time frame, with a median growth rate of 450 percent.

Silicon Valley-based companies dominated the list, accounting for the top three companies as well as 20 percent of the entire list. The second largest region represented was New York, with 13 percent of the list.

In terms of sector, software has the biggest hold on the ranking with 71 percent of the companies being categorized in that realm, which is the highest percentage Deloitte has ever seen in this study.

The report also looked ate venture backing and found that this year 81 percent of the 500 fastest-growing tech companies received venture funding, which includes, according to the release, 26 of the top 30 companies.

"Each year the Technology Fast 500 listing validates how important technology innovation is to our daily lives. It was interesting to see this year that while software companies continued to dominate, biotech companies rose to the top of the winners list for the first time, demonstrating that new categories of innovation are accelerating in the pursuit of making life easier, safer and more productive," says Mohana Dissanayake, partner at Deloitte, in the release. "We extend our congratulations to these well-deserved winners — who all embody a spirit of curiosity, and a never-ending commitment to making technology advancements possible."

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Innovative Houston-area hardtech startup closes $5M seed round

fresh funding

Conroe-based hardtech startup FluxWorks has closed a $5 million seed round.

The funding was led by Austin-based Scout Ventures, which invests in early-stage startups working to solve national security challenges.

Michigan Capital Network also contributed to the round from its MCN Venture Fund V. The fund is one of 18 selected by the Department of Defense and Small Business Administration to participate in the Small Business Investment Company Critical Technologies Initiative, which will invest $4 billion into over 1,700 portfolio companies.

FluxWorks reports that it will use the funding to drive the commercialization of its flagship Celestial Gear technology.

"At Scout, we invest in 'frontier tech' that is essential to national interest. FluxWorks is doing exactly that by solving critical hardware bottlenecks with its flagship Celestial Gear technology ... This is about more than just gears; it’s about strengthening our industrial infrastructure," Scout Ventures shared in a LinkedIn post.

Fluxworks specializes in making contactless magnetic gears for use in extreme conditions, which can enhance in-space manufacturing. Its contactless design leads to less wear, debris and maintenance. Its technology is particularly suited for space applications because it does not require lubricants, which can be difficult to control at harsh temperatures and in microgravity.

The company received a grant from the Texas Space Commission last year and was one of two startups to receive the Technology in Space Prize, funded by Boeing and the Center for the Advancement of Science in Space (CASIS), in 2024. It also landed $1.2 million through the National Science Foundation's SBIR Phase II grant this fall.

Fluxworks was founded in College Station by CEO Bryton Praslicka in 2021. Praslicka moved the company to Conroe 2024.

5 Houston scientists named winners of prestigious Hill Prizes 2026

prized research

Five Houston scientists were recognized for their "high-risk, high-reward ideas and innovations" by Lyda Hill Philanthropies and the Texas Academy of Medicine, Engineering, Science and Technology (TAMEST).

The 2026 Hill Prizes provide seed funding to top Texas researchers. This year's prizes were given out in seven categories, including biological sciences, engineering, medicine, physical sciences, public health and technology, and the new artificial intelligence award.

Each recipient’s institution or organization will receive $500,000 in direct funding from Dallas-based Lyda Hill Philanthropies. The organization has also committed to giving at least $1 million in discretionary research funding on an ad hoc basis for highly-ranked applicants who were not selected as recipients.

“It is with great pride that I congratulate this year’s Hill Prizes recipients. Their pioneering spirit and unwavering dedication to innovation are addressing some of the most pressing challenges of our time – from climate resilience and energy sustainability to medical breakthroughs and the future of artificial intelligence,” Lyda Hill, founder of Lyda Hill Philanthropies, said in a news release.

The 2026 Houston-area recipients include:

Biological Sciences: Susan M. Rosenberg, Baylor College of Medicine

Rosenberg and her team are developing ways to fight antibiotic resistance. The team will use the funding to screen a 14,000-compound drug library to identify additional candidates, study their mechanisms and test their ability to boost antibiotic effectiveness in animal models. The goal is to move toward clinical trials, beginning with veterans suffering from recurrent infections.

Medicine: Dr. Raghu Kalluri, The University of Texas MD Anderson Cancer Center

Kalluri is developing eye drops to treat age-related macular degeneration (AMD), the leading cause of vision loss globally. Kalluri will use the funding to accelerate studies and support testing for additional ocular conditions. He was also named to the National Academy of Inventors’ newest class of fellows last month.

Engineering: Naomi J. Halas, Rice University

Co-recipeints: Peter J. A. Nordlander and Hossein Robatjazi, Rice University

Halas and her team are working to advance light-driven technologies for sustainable ammonia synthesis. The team says it will use the funding to improve light-driven catalysts for converting nitrogen into ammonia, refine prototype reactors for practical deployment and partner with industry collaborators to advance larger-scale applications. Halas and Nordlander are co-founders of Syzygy Plasmonics, and Robatjazi serves as vice president of research for the company.

The other Texas-based recipients include:

  • Artificial Intelligence: Kristen Grauman, The University of Texas at Austin
  • Physical Sciences: Karen L. Wooley, Texas A&M University; Co-Recipient: Matthew Stone, Teysha Technologies
  • Public Health: Dr. Elizabeth C. Matsui, The University of Texas at Austin and Baylor College of Medicine
  • Technology: Kurt W. Swogger, Molecular Rebar Design LLC; Co-recipients: Clive Bosnyak, Molecular Rebar Design, and August Krupp, MR Rubber Business and Molecular Rebar Design LLC

Recipients will be recognized Feb. 2 during the TAMEST 2026 Annual Conference in San Antonio. They were determined by a committee of TAMEST members and endorsed by a committee of Texas Nobel and Breakthrough Prize Laureates and approved by the TAMEST Board of Directors.

“On behalf of TAMEST, we are honored to celebrate the 2026 Hill Prizes recipients. These outstanding innovators exemplify the excellence and ambition of Texas science and research,” Ganesh Thakur, TAMEST president and a distinguished professor at the University of Houston, added in the release. “Thanks to the visionary support of Lyda Hill Philanthropies, the Hill Prizes not only recognize transformative work but provide the resources to move bold ideas from the lab to life-changing solutions. We are proud to support their journeys and spotlight Texas as a global hub for scientific leadership.”

Investment bank opens new Houston office focused on energy sector

Investment bank Cohen & Co. Capital Markets has opened a Houston office to serve as the hub of its energy advisory business and has tapped investment banking veteran Rahul Jasuja as the office’s leader.

Jasuja joined Cohen & Co. Capital Markets, a subsidiary of financial services company Cohen & Co., as managing director, and head of energy and energy transition investment banking. Cohen’s capital markets arm closed $44 billion worth of deals last year.

Jasuja previously worked at energy-focused Houston investment bank Mast Capital Advisors, where he was managing director of investment banking. Before Mast Capital, Jasuja was director of energy investment banking in the Houston office of Wells Fargo Securities.

“Meeting rising [energy] demand will require disciplined capital allocation across traditional energy, sustainable fuels, and firm, dispatchable solutions such as nuclear and geothermal,” Jasuja said in a news release. “Houston remains the center of gravity where capital, operating expertise, and execution come together to make that transition investable.”

The Houston office will focus on four energy verticals:

  • Energy systems such as nuclear and geothermal
  • Energy supply chains
  • Energy-transition fuel and technology
  • Traditional energy
“We are making a committed investment in Houston because we believe the infrastructure powering AI, defense, and energy transition — from nuclear to rare-earth technology — represents the next secular cycle of value creation,” Jerry Serowik, head of Cohen & Co. Capital Markets, added in the release.

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This article originally appeared on EnergyCaptialHTX.com.

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