• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
TechCybersecurity

A.I.-driven cybersecurity firm Darktrace rises nearly 40% in London debut

By Siva Sithraputhran
April 30, 2021, 5:24 AM ET

Darktrace PLC, the buzzy U.K.-based cybersecurity tech firm that uses artificial intelligence to combat cyberthreats, lived up to its hype on Friday as shares shot higher on the first day of trading on the London Stock Exchange.

The stock soared nearly 40% from its IPO price of ₤2.50.

The listing adds to the flurry of IPOs in London this year and helps allay concerns that the city may be losing some of its allure after the disappointment brought on by the lackluster debut of meal delivery firm Deliveroo, which slumped about 30% when it floated at the end of March. What a difference a month makes.

The Darktrace IPO at ₤2.50 values the company at ₤1.7 billion, a lot lower than early speculation about a figure closer to ₤5.0 billion.

The float is small, at only around 9.6 % of the company.

“Our company is deeply rooted in the U.K.’s tradition of scientific and mathematic research so we are especially proud to be listing on the London Stock Exchange,” CEO Poppy Gustafsson said in a regulatory statement.

Celebrating the listing, Gustafsson paid tribute to her R&D center in Cambridge: “Not only have you created a fundamental technology that 4,700 organizations now rely on to help them tackle novel and advanced cyberthreats, but you remain committed to innovation, pushing the envelope and shaping the world with your ideas. Today is just the beginning.”

U.S. investment bank Jefferies is the sole sponsor of the IPO as well as joint global coordinator and joint bookrunners.

Darktrace also said it has been named one of Time magazine’s Most Influential Companies of the year.

“Darktrace AI identified and investigated a nation-state attack last year, two weeks before it was publicly attributed to the Chinese cyber-espionage group APT41,” it added.

Our mission to make business better is fueled by readers like you. To enjoy unlimited access to our journalism, subscribe today.


Latest in Tech

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
Fortune Secondary Logo
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Tech

AIAnthropic
Anthropic’s investors could be the key to ending its Pentagon standoff—but some investors have opposite views
By Jessica MathewsMarch 5, 2026
9 hours ago
AIGoogle
Google’s AI chatbot convinced a man they were in love. It then allegedly told him to stage a ‘mass casualty attack’ in newly released lawsuit
By Jake AngeloMarch 5, 2026
9 hours ago
Startups & VentureBillionaires
Silicon Valley legend Vinod Khosla has ‘no plans to leave California’ amid billionaire tax uproar—but he has another idea to fix the wealth loophole
By Nick LichtenbergMarch 5, 2026
11 hours ago
Side-by-side photos of OpenAI CEO Sam Altman and Anthropic CEO Dario Amodei
AIEye on AI
The Anthropic–OpenAI feud and their Pentagon dispute expose a deeper problem with AI safety
By Sharon GoldmanMarch 5, 2026
13 hours ago
Sam Altman speaking.
AIOpenAI
OpenAI launches GPT-5.4, its most powerful model for enterprise work—and a direct shot at Anthropic
By Beatrice NolanMarch 5, 2026
14 hours ago
shlomo
CommentaryMarkets
Tech billionaire Shlomo Kramer: the cyber selloff proved that Wall Street can’t price tech anymore
By Shlomo KramerMarch 5, 2026
15 hours ago

Most Popular

placeholder alt text
Health
Palantir and other tech companies are stocking offices with nicotine products to increase worker productivity
By Catherina GioinoMarch 4, 2026
2 days ago
placeholder alt text
Success
Uber CEO says his ‘really demanding’ work culture includes expecting employees to answer his emails over the weekend: ‘Don’t come here if you want to coast’
By Emma BurleighMarch 4, 2026
2 days ago
placeholder alt text
Newsletters
The Iran war is giving rise to a centuries-old economic theory—and laying waste to the WTO-based world order
By Diane BradyMarch 5, 2026
22 hours ago
placeholder alt text
Economy
Trump's loss of $1.7 trillion in tariff revenue will send the national debt to $58 trillion by 2036, think tank projects
By Nick LichtenbergMarch 5, 2026
17 hours ago
placeholder alt text
AI
OpenAI investor Vinod Khosla predicts today’s 5-year-olds won’t ever need to get jobs thanks to AI
By Sasha RogelbergMarch 4, 2026
2 days ago
placeholder alt text
Success
Tech investor Bill Gurley says workers who went through the ‘college conveyor belt’ and chased safe jobs are at high risk of AI automation
By Emma BurleighMarch 3, 2026
3 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.