Who we are

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

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

Our founding story

rezonanz traces back to ETH-Zürich, where we all did our advanced degrees. Siyana embarked on a PhD journey, while Eleanor was drawn to the world of sustainable finance. At RobecoSAM in Zürich, Eleanor and Dan built ESG portfolio management software together, forging a friendship over a shared passion for building great software, belief in stewardship as the future of responsible investment, and insight that strategic data-sharing has the potential to increase investors' impact.

The trio recognized that stewardship can be benchmarked, and that Siyana's PhD research in political science could help in this regard. In early 2024, rezonanz was born with the vision of amplifying responsible investors voices to enable better decisions.

Meet our team

Eleanor Willi

Eleanor Willi

Chief Executive Officer
Dr. Siyana Gurova

Dr. Siyana Gurova

Chief Scientific Officer
Dan Bondor

Dan Bondor

Chief Technology Officer

Our values

rezonanz is a company driven by a core mission to increase investor impact. We believe that by empowering investors with unique insights into proxy voting and engagement activities, we can foster a more sustainable financial system. Our purpose is to bridge the gap between data and decision-making, ensuring that responsible investment practices lead to real-world change.

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Transparency

We believe in open, data-driven insights that empower informed decision-making and build trust.

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Collaboration

Our frameworks tackle investment stewardship as a collective challenge, identifying key contributors to long-term value creation amidst concentrated costs and dispersed benefits.

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Impact-Oriented

We're convinced that stewardship is the key channel for investors in public markets to have impact and are dedicated to creating measurable, lasting change by designing solutions that amplify investor influence & drive sustainable outcomes.

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 academia, the financial industry, corporates and regulatory bodies.