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Ambienta enters Nordics following launch of €500m small-cap strategy

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Published: 9 July 2025

Ambienta’s majority stake acquisition of the Stockholm-based trenchless water infrastructure firm No Dig Alliance follows on from the launch of new small-cap strategy.

Ambienta has entered the Nordic market for the first time with its stake in Stockholm-based No Dig Alliance | Stockholm cityscape | Ana Borquez on Unsplash

Ambienta, the sustainability-focused asset manager, has entered the Nordic market for the first time with the acquisition of a majority stake in Stockholm-based No Dig Alliance (NDA), which provides trenchless water infrastructure services. 

NDA, which operates across Sweden, Norway and Finland, uses trenchless technology to inspect, clean, and rehabilitate underground pipelines without excavation, thereby minimising carbon emissions, construction waste, and disruption to urban life, it says.

Speaking to Impact Investor, Mauro Roversi, founding partner and chief investment officer at Ambienta said: “Ambienta’s investment represents a strategic milestone as our first platform in the Nordic region, a market we have been assessing for some time, and where the €3bn underground infrastructure market presents strong growth potential driven by sustainability and efficiency imperatives.”

NDA’s trenchless technology directly addresses the need to modernise aging water networks across Europe, a sector where 25% of treated water is lost due to leakage, equating to millions of cubic meters wasted daily, according to Ambienta.

Small-cap launch

The move comes as Ambienta announced the launch of its new small-cap strategy which has raised approximately €500m, surpassing its original €450m target.

The strategy targets European companies with revenues up to €150m that deliver measurable gains in sustainability, particularly in underpenetrated and fragmented sectors.

Ambienta said that the recently launched small-cap strategy is a reinforcement of its commitment to identifying and scaling environmental champions. 

“This new strategy targets smaller companies across Europe that are driving measurable improvements in resource efficiency or pollution control, often in overlooked or fragmented sectors,” Roversi said.

Asked how Ambienta intends to preserve impact integrity while scaling across different sectors and geographies, Roversi told Impact Investor: “We ensure the preservation of the integrity of our environmental impact while scaling through our proprietary Environmental Impact Analysis tool, which quantitatively assesses the impact of each investment across 11 environmental metrics. Only companies with quantifiable and material sustainability benefits are eligible for investment – and this approach is applied and consistent across all our strategies. 

“This rigorous screening is supported by our “ESG in Action” programme – a proven framework that embeds ESG principles into every stage of the value creation process, from governance and supply chain to product development and reporting, to ensure each of our investments delivers measurable, positive ESG outcomes,” he added.

Looking ahead, Roversi said that while the strategy is sector-agnostic, it remains aligned to Ambienta’s overarching investment conviction that sustainability drives value.

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