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- Signals by Signal - Week 46
Signals by Signal - Week 46
Preview the power of data-driven intelligence in private markets

Welcome to Signals by Signal, brought to you by the team here at Signal.
Get a sneak peek of what our platform can do with this data-driven newsletter, crafted to help investors discover stealth founders, emerging startups, and growing companies. Enjoy this week’s edition — we’re excited to have you with us!
Heads up! The data in the Signals by Signal newsletter are intentionally delayed to give our customers a strategic advantage. Access real-time signals by requesting a free trial.
Stealth Detector
Signal detects thousands of new stealth founders every month. Here’s a glimpse of some of the individuals operating under the radar, along with their backgrounds and expertise.
![]() | Laurens Voogd |
![]() | Almo Sutedjo |
![]() | Dr. Maximilian Hofer |
Newly launched startups
Signal uncovers newly launched startups ready to disrupt their industries. This section highlights some of the recent startups we spotted.
![]() | ReBloom |
![]() | Relief Technologies |
![]() | VoxNow |
Growing companies
Signal monitors fast-growing companies in real-time, offering updates on key performance metrics, funding, team growth and much more. Here are some of the growing companies we recently spotted.
![]() | Industry: Technology, Information and Internet Location: London, United Kingdom What they do: Popp AI is a conversational AI tool designed to transform recruitment by enabling open, authentic conversations with candidates at scale Last Funding date: Nov 9, 2023 Latest Funding: N/A Signal: Popp AI has grown to 14 employees, a 27% increase in 30 days, and acquired 3 new customers. Additionally, Popp AI launched a new product and is hiring in one area |
![]() | Industry: Renewable Energy Equipment Manufacturing Location: Muhos, Finland What they do: Cactos develops distributed energy storage systems based on batteries Last funding date: Jan 10, 2024 Latest funding amount: $28.5M Signal: Cactos has made significant strides with a 16% increase in employees over 15 days, reaching a total of 35. The company has secured a new customer, Faast. Additionally, Cactos launched a new product and made a key hire, David Hérault, as a Full Stack Engineer |
![]() | Industry: Consumer Services Location: Cologne, Germany What they do: Niostem develops innovative regenerative technologies, with a focus on a smart wearable device (nio1) that stops hair loss within 3 months and supports hair regrowth from 6 months Last funding date: N/A Last funding amount: N/A Signal: Niostem has shown significant growth with 18 employees, a 12% increase in 20 days. Website traffic surged to 20.3k visits, more than doubling in 30 days. Instagram followers grew to 4.1k, a 7% rise over 20 days. The company is actively hiring, with job posts for two areas |

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