Strategic Investing Solutions
Proven Investment Expertise
Since inception, the practice has prioritized transparent methodologies, rigorous due diligence, and measurable outcomes to support long-term client objectives.
Since inception, the practice has prioritized transparent methodologies, rigorous due diligence, and measurable outcomes to support long-term client objectives.
We back a small number of enduring companies, from the first cheque through the public markets, and we hold through the transition most investors treat as an exit.
Capital is patient here. We underwrite structural change, invest our own capital beside our partners, and measure the work in decades rather than quarters.
One firm, two disciplines. Investment conviction across private and public markets, and the strategic counsel of a consultancy that answers for outcomes.
One firm, two disciplines. Patient capital across private and public markets, and the strategic counsel of a long-term owner.
S6i Capital is a crossover firm investing across private and public markets. We are not built for coverage or churn. We are built for a small number of consequential decisions, made with conviction and held for a very long time.
Most capital is organised around the exit. We are organised around the company. We commit early, concentrate deliberately, and remain shareholders through the transition from private to public, the moment most investors sell. Alongside the capital, S6i Advisory brings the operating and strategic judgement of a long-term owner to the decisions that compound.
Based in New York, Montréal, and San Francisco, invested wherever enduring companies are built. Every line on this globe is a company we know as owners, not as tourists.
We invest behind a small number of structural changes we expect to define the next two decades, and the companies positioned to compound advantage as they unfold. Hover a theme to trace its connections.
Linear businesses are priced efficiently. We look for the rare few whose advantage widens with scale, through data, networks, cost, or trust, and we hold long enough for compounding to do the work.
We enter early and stay through the transition most treat as an exit, the point at which a private company becomes a public institution.
S6i Advisory serves boards and leadership teams across every discipline a global consultancy covers. The difference is that we advise the way we invest: concentrated, senior, and accountable to the outcome.
We built our advisory practice because our companies kept asking for it. The counsel is the same we apply to our own capital: clear, delivered by principals, and priced for alignment.
Every practice a global firm fields, brought with the conviction we carry as investors.
Corporate and business-unit strategy, capital allocation, and the financial architecture behind durable growth.
Cost, productivity, supply chain, and the operating discipline that turns strategy into results.
Operating models, talent systems, and the leadership decisions that compound trust across cycles.
Technology strategy and applied intelligence, from architecture through adoption at scale.
Portfolio, roadmap, and the build, buy, or partner decisions that define the next curve of growth.
Pricing, go-to-market, and revenue engines built for durable unit economics.
Enterprise risk, regulatory strategy, and the resilience institutions are underwritten on.
Decarbonisation economics and transition strategy, treated as investment decisions.
Diligence, integration, and value creation across the full transaction lifecycle.
Liquidity, operational reset, and credibility with stakeholders when it matters most.
Preparing private companies for the institutions, disclosure, and discipline of public ownership.
Not a logo wall. A small number of positions we understand deeply and expect to hold for years. Click a logo to visit the company, or the card to read our thesis.
Illustrative and for informational purposes only. Companies shown may include private and public positions, may not reflect current holdings, and do not constitute investment advice or an offer of any kind. Past performance is not indicative of future results. Logos are the property of their respective owners.
We publish long-form research across technology, science, economics, and risk on Substack. Thinking in public keeps our conviction honest.
Why the best companies now stay private through the years that once created public wealth, and what patient capital does about it.
Read on Substack ↗S6i is a small partnership drawn from investing, operating, and research. We invest our own capital alongside our partners, and we keep the team deliberately small.
We introduce the team in full to prospective partners and founders. Discretion is part of the work.
For founders, prospective partners, and companies considering the transition to public markets. We read every message and reply where we can.
S6i Capital handles your details with discretion. They are used solely to respond to your enquiry and are never shared with third parties.
Welcome back. Indicative snapshot · July 10, 2026. Log out
Private view for authorised partners only. Figures are an indicative snapshot and may differ from custodial records. US$ positions are shown converted at 1.37 CAD where combined. Compounding scenarios are illustrative, not a forecast and not advice.
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Most of finance is a contest of speed. We have built S6i around the opposite conviction: that the scarcest edge left is patience. The willingness to concentrate, to be early, and to hold through the years when a great company is merely a good one.
We back a small number of founders, we invest our own capital beside theirs, and we stay through the transition from private to public that most investors treat as the finish line. We think it is closer to the beginning.
If you are building something meant to last, we would like to hear from you.