Who we are

We're a team of interdisciplinary experts, researchers and builders in sustainability, data science, political science and software engineering.

We're an interdisciplinary team combining expertise in sustainability, data science, political science & software engineering.

Our founding story

What do a Sustainability Expert, a Political Scientist and a Software Engineer have in common?

A passion for empowering investors to drive real change through collaborative data-sharing, and a deeply-held conviction that stewardship can be measured.

Eleanor, Siyana and Dan leveraged their diverse academic backgrounds and private sector experience to build rezonanz's dynamic insight and collaboration engine. Their shared vision for amplifying investors' voices has guided them each step of the way.

Our values

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Meaningful change

We believe that effective stewardship has the power to drive meaningful change and create lasting value.

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Transparency

We believe that open, data-driven insights lead to better-informed decisions.

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Collaboration

We believe that collaboration is central to creating real impact.

What our clients are saying

"We have had the pleasure of collaborating with rezonanz on a project focused on assessing asset management proxy voting and stewardship activities. We were extremely satisfied with the partnership and the outcomes delivered. Their communication was consistently clear, and our expectations were effectively managed and met.

We were impressed by rezonanz's customizable benchmarking solution, which enabled us to effectively assess proxy voting results against our own criteria focussed on environmental impact. This feature was invaluable in helping us with our assessments.

Niki Vischer

Voices from our network

“There is still too often a significant difference between the aspirations of asset owners and the way asset managers vote at general meetings, particularly when it comes to sustainability issues. A ranking of this kind is therefore all the more important because it enables asset owners to form an idea of how asset managers vote on their behalf.”

Vincent Kaufmann

CEO of Ethos

“rezonanz provides comPlan with valuable insights into our voting track record, enabling us to benchmark this critical aspect of stewardship against other investors. With rezonanz's advanced analytics, we can identify gaps and strengthen our commitment to long-term sustainability alignment.”

Roman Denkinger

Head of Investment Management
comPlan

"More and more asset managers disclose all their votes online, providing more opportunity for sweeping analysis of their voting behaviour. New players have emerged in the sustainable finance ecosystem, such as the Swiss start-up rezonanz, to mine this information. The company has developed a tool for benchmarking voting behaviour and continued commitment to sustainability priorities, aggregating and analysing large volumes of data. In time, we could have more nuanced and data-driven insights that run deeper than simply analysing the rate of support for shareholder proposals, which are still far from the norm in all markets."

Novethic

Report "Stewardship: A Balancing Act for Investors"

Network and Partners

Our Supporters

Our Network

Where we're based

We're building Swiss Made Software in Switzerland's leading financial center: Zürich. The city’s dynamic sustainable finance ecosystem promotes collaboration among the financial industry, corporates, academics and regulatory bodies.