Nordic Capital has agreed to acquire BMLL, a UK-based provider of harmonised historical trading data and analytics for capital markets, in partnership with the company’s management team and minority shareholder Optiver.

The investment will accelerate BMLL’s next stage of growth, supporting its mission to provide the market’s trusted base layer of analytics-ready, high-quality historical order book data across all major exchange-traded asset classes.

Founded in 2014 by Cambridge academics, BMLL offers Level 1, 2, and 3 order book data spanning global equities, ETFs, futures, and US options. Its proprietary technology cleans and standardises raw market data from more than 120 venues, making it accessible through its cloud-native platform for trading, analytics, and compliance use cases.

As part of the deal, Nordic Capital will provide significant primary capital to expand BMLL’s global coverage, increase historical data depth, and strengthen multi-asset class capabilities. The funding will also help scale its AI-ready data products and deepen partnerships with exchanges, technology providers, and market infrastructure firms.

Paul Humphrey, CEO of BMLL, said: “With Nordic Capital by our side, along with Optiver, we are excited about BMLL’s future, and the impact we will have on participants’ ability to navigate complex market dynamics globally. We will keep raising the bar for data quality and delivering this data to every corner of the market.”

David Samuelson, Partner at Nordic Capital Advisors, added: “BMLL stands out for the precision, transparency and insight it brings to market participants. We see a clear opportunity to extend its reach globally and help more firms harness the power of harmonised, high-quality data.”

Nordic Capital is one of Europe’s most active technology investors, with deep expertise in financial software and data-driven solutions. Previous investments in the sector include ActiveViam, Duco, Itiviti, Regnology, Trustly, and Zafin.

Financial terms of the transaction were not disclosed.

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