April 10, 2024

Dawn Capital and Insight Partners back Spain’s data startup Onum with a $28m Series A

The startup will use the money to expand to the US

Zosia Wanat

2 min read

Madrid-based Onum has raised a $28m Series A led by Dawn Capital — just seven months after its launch. The startup, which helps companies manage and monitor big datasets, will use the money to expand globally, mostly to the US. 

What does Onum do? 

Onum’s mission is to help companies isolate and observe valuable information within large datasets in real-time. 

According to the company, only about 15% of a typical organisation’s data is business-critical, requiring immediate analysis. Since most businesses have no way of discerning the valuable information from the noise, however, many organisations send all of their data to analytics platforms for analysis, resulting in higher costs and longer processing times.


Onum gives the example of a large bank that’s trying to enhance its IT network security capabilities and meet strict compliance requirements. The startup says it allows the bank to focus exclusively on the data that matters, so they can more accurately and cost-effectively detect security threats based on warning signs in their data across their whole network.

Unlike some of its competitors, Onum says it doesn’t only reduce the amount of data that a client needs to process, but can also tailor the service to individual business needs, such as risk reduction, compliance, customer usage, and network efficiency.

The startup was cofounded in October 2023 by Lucas Varela, Pedro Tortosa and Pedro Castillo, the latter of whom also founded cloud analytics and security platform Devo, valued at more than $2bn. It says it’s already won several enterprise customers including major financial institutions, global consulting firms and large telecommunications companies, mostly in Spain. 

Where will the money go? 

Onum employs nearly 50 employees, and plans to use the fresh funding to accelerate product development and hire more people this year, opening a new office in Boston. 

Who has invested? 

  • Dawn Capital, London-based B2B software VC venture capital; 
  • Kibo Ventures, Madrid-based VC;
  • Insight Partners, New York-based VC.

Zosia Wanat

Zosia Wanat is a senior reporter at Sifted. She covers the CEE region and policy. Follow her on X and LinkedIn