the new economy: investing in tomorrow, today
the future of investing
catalyzing progress by investing in innovative, high-growth, high-return companies that drive technological, environmental, and societal advancements and shape the new economy
We are a Zurich-based investment boutique / multi-family office allocating private and institutional capital in exceptional direct investments and specialized funds in the alternative markets space. We target market returns and risk-return adjusted profiles while aligning our investments with environmental and social goals. Our active, hands-on approach aims at adding value throughout the value chain of our portfolio companies, coaching and helping them grow. Highly collaborative by nature, we pool expertise and capacity with aligned co-investors and specialists, leveraging our vast international network in the sustainability segment to minimize risk and maximize both financial and societal impact.
the swiss impact office
track record
exceptional track record,
spanning three decades,
with 100s of millions
into balanced diversified portfolios (funds and direct investments) sourced from a vast global sustainability network
opportunities
we focus on innovative companies and funds, addressing high growth areas of the future economy, that can deliver superior returns while maintaining balanced risk profiles in alignment with environment and society
our offering
bespoke strategic advisory
paired with comprehensive A-Z investment management,
from sourcing to due diligence, structuring, execution,
and portfolio monitoring and reporting
SIO Ventures: The Private Impact Investors Club
Currated Deals. Shared Values. Real Returns
SIO Ventures is our invitation-only investor club and co-investment platform, designed for fellow private investors, families, and nextgens who want access to institutional-quality opportunities usually not visible or accessible and reserved for larger players and funds. Through our curated pipeline, members can co-invest in high-growth innovation and tech-driven companies combining strong return potential with measurable impact.
What makes SIO Ventures unique is the blend of innovation, exclusivity, and trust. Investments are structured under secure Swiss vehicles, ensuring transparency, governance, and flexibility, while offering access to opportunities that stand out for their quality, resilience, and potential to scale. Members can select the deals that match their strategy and values, always supported by rigorous due diligence provided by the SIO team. Members benefit from rigorous due diligence, and opportunities to combine financial performance with meaningful societal and environmental outcomes, as well as Golden Visa options through innovative investments for non-EU citizens.
Through SIO Ventures, investors are represented by the Swiss Impact Office in each transaction and benefit from our experience, networks, and active involvement. We curate opportunities by analysing value chains before committing capital, optimising investment and business readiness, and structuring deals for long-term resilience. Post-investment, we provide strategic guidance, coaching, and support to portfolio companies, while bringing in strategic co-investors (from specialized funds to corporates), that add value alongside our capital. On the exit side, we work to optimise outcomes, ensuring that both SIO and our fellow investors achieve strong financial performance together.
SIO Ventures is also a community of peers and families, united by a shared vision of mobilising capital for both performance and positive outcomes. Members take part in private gatherings, educational programmes, and exclusive retreats. These encounters strengthen networks, deepen expertise, and create long-term partnerships.
investment areas examples
impact theme example
e-mobility
USD 2 trillion market by 2030
25% annual growth rate
impact theme example
sustainable buildings & materials
The market for green buildings is anticipated to more than double by 2030, driven by increasing environmental concerns and energy efficiency regulation, a rapid growth supported by a shifting consumer preferences toward healthier, eco-friendly spaces
USD 1.3 trillion market by 2030
Close to 10% annual growth rate
Iimpact theme example
sustainable aquaculture
The necessity for food security is putting tremendous pressure on aquatic ecosystems. Sustainable aquaculture has a positive impact on biodiversity as cultured seafood can reduce pressure on over-exploited stocks and organisms and boost natural production
USD 400 billion market by 2030
Over 10% annual growth rate
thought leadership in sustainable investments
our thematic priorities
environmental advancement
nature finance /
carbon strategies
elimination of threats and promotion of global biodiversity, with a pro-active approach, through investments in nature based solutions and innovative technologies
clean tech
clean energy
transition to clean energy sources with renewable energy infrastructure, environmental and energy efficient technologies
sustainable lifestyles
sustainable
food chains
improvement of nutritional value of food, and protection of environmental capital through local production / consumption, new processes, and smart technologies
responsible
consumer goods
transition to responsible consumerism with sustainable, natural, low-waste, carbon-neutral, recycled and recyclable goods in fashion, cosmetics and household
access to finance
sme lending
factoring
promotion of local economic development to alleviate poverty by providing access to finance to micro-, small- and medium enterprises in peripheral Europe and the developing world
trade
finance
transformation of the international trading system to support environmental protection and social progress, through the optimization of trade value chains from sourcing to distribution
environmental advancement
biodiversity
protection
elimination of threats and promotion of global biodiversity, with a pro-active approach, through investments in innovative technologies and smart business models
clean tech
clean energy
transition to clean energy sources with renewable energy infrastructure, environmental and energy efficient technologies
sustainable lifestyles
sustainable
food chains
improvement of nutritional value of food, and protection of environmental capital through local production / consumption, new processes, and smart technologies
responsible
consumer goods
transition to responsible consumerism with sustainable, natural, low-waste, carbon-neutral, recycled and recyclable goods in fashion, cosmetics and household
access to finance
sme lending
factoring
promotion of local economic development to alleviate poverty by providing access to finance to micro-, small- and medium enterprises in peripheral Europe and the developing world
trade
finance
transformation of the international trading system to support environmental protection and social progress, through the optimization of trade value chains from sourcing to distribution
latest talks and appearances
"we need to scale and commercialize technology solutions to address global environmental and social problems effectively"
An exceptional podcast of The Geneva Connection and Building Bridges, on Financing The Future and the role of Impact Investing, with top experts Dimple Sahni and Yuko Takano (many thanks to Luka Biernacki, Gianluca Allaria for hosting us)
"what will it take for more investors to embrace investment strategies that are both high-performing and fully aligned with our future"
Leveraging on our expertise in alternative investments and access to exceptional dealflow, we work closely with private and institutional clients to design well performing, risk adjusted portfolios. (many thanks to ISSIMO and Phenix Capital Group for hosting us)
our focus
strategy
vision / mission alignment
thematic priorities
portfolio construction
direct investments
growth stage venture capital
club deals
co-investments
investment products
special purpose vehicles
specialized funds
new thematic products
funds and companies
governance and strategy
fundraising support
international presence
our focus
strategy
vision / mission alignment
thematic priorities
portfolio construction
direct investments
growth stage venture capital
club deals
co-investments
investment products
special purpose vehicles
specialized funds
new thematic products
comprehensive services offering
INVESTMENT MANAGEMENT
IMPACT FUNDS
Semi-liquid evergreen debt funds
Thematic VC / PE funds
IMPACT DIRECTS
Series A
Series B
ADVISORY
STRATEGY
Vision / mission alignment
Thematic priorities
Portfolio construction
PRODUCTS
Financial impact products structuring
Monitoring & reporting
INVESTMENT READINESS
Compliance to frameworks
“Impact” marketing & fundraising
examples from our fund investments
Food Transition Impact Fund
Luxembourg / Europe
Evergreen impact fund investing in innovative ventures throughout the European food value chain to facilitate the long-term transition to sustainable food and agriculture.
Impact Trade Finance Fund
Luxembourg / Global
Trade finance fund with global operations and strong impact focus focusing on short-term financings with commodity trading, and import/export credit facilities.
SME Lending Impact Fund
Luxembourg / Europe & ΕΜ
Impact fund focusing on providing factoring and short- to medium-term credit products to underserved micro- and small enterprises in peripheral Europe and emerging markets.
Fintech Loans Impact Fund
Luxembourg / Emerging Markets
High performing Impact Fund focusing on access to finance by providing smart loans and fintech solutions to innovative, growth companies in selected, stable emerging markets.
examples from our direct investments
Agrivoltaics Technology
Greece / Netherlands
Market leader in agrivoltaics nanotechnology producing innovative glass solutions for the greenhouse and open installation agricultural photovoltaics markets.
Solar Infrastructure Bond
UK / SE Europe
Primary issue of short-maturity green bond to bridge finance advancement of existing GW pipeline with the development, construction and operation of solar parks in Eastern Europe.
Reforestation & Carbon
Netherlands / Panama
Proven, innovative forestry concept that combines climate protection and economic returns through biodiverse reforestation and carbon sequestration in the tropics.
Ethical Cosmetics
Greece / Cyprus
Pioneering 10-year impact venture focusing on sustainable, ethical and professional personal care products with distribution in online B2C platforms and specialized B2B channels.
tell us about your business model
about the founder
Kostis Tselenis – managing partner SIO
Kostis founded the SIO with the aim of advancing sustainable and impact-driven investments. With over two decades of experience in investment banking and investment management, he has been involved in a range of investments in innovative companies and funds, focusing on long-term positive financial and societal outcomes. He has served on the boards of forward thinking organizations contributing to efforts that bridge finance and sustainability. Kostis values thoughtful decision-making and collaboration, working closely with his international network of investors, experts, and sustainability leaders. He regularly participates in international discussions sharing insights from his experience. His work is driven by a belief in the potential of finance to support a more sustainable and resilient economy.
team
Kostis Tselenis
Yullie Matsouka
Cássia Fernandes de Lima
Isidora Stella
Kostas Dimitrakopoulos
Lewis Chapman
Thanos Didaskalou
advisors
Andrian Mate
Jan Lazar
Nikolaus Hutter
Georgia Fotiou
(legal / Staiger Law)
George Platanas
selected speeches and panels
The Geneva Connection and Building Bridges podcast
Sustainable Finance panel
1st impact conference in Greece Opening Words
impact investing lectures
