Portfolio Concept
Portfolio Concept is a multi-family office headquartered in Cologne, Germany. Founded in 1984 by investment professional Günter T.
Portfolio Concept
Portfolio Concept is a multi-family office headquartered in Cologne, Germany. Founded in 1984 by investment professional Günter T. Schlösser, it originates from wealth created in financial services and builds on four decades of independent asset-management expertise. The firm advises private and institutional clients on portfolio construction, estate planning and philanthropic mandates, leveraging open-architecture investment selection and in-house research—delivers disciplined, conflict-free wealth stewardship.
General information
Firm type
Multi Family Office
Year founded
1984
AUM
—
Location
Region
Europe
Country
—
City
Koln
Corporate office
Max-Pechstein-Str. 23, 50858 Köln
Frequently asked questions
What is Portfolio Concept?
Portfolio Concept is a multi family office headquartered in Koln.
When was Portfolio Concept founded?
Portfolio Concept was founded in 1984.
Where is Portfolio Concept headquartered?
Portfolio Concept is headquartered in Koln, in the Europe region.
What does Altss track for Portfolio Concept?
Altss maintains an OSINT-verified profile of Portfolio Concept covering investment focus (ESG policy, ticket size, target IRR, currency preference, regional focuses, industry focuses, technological focuses), team (service providers and advisors), deals (company deals and fund commitments), assets (real estate, public market positions, private companies, art and cultural holdings, philanthropy and foundations), and network (club memberships, associations, and event participation). Detailed values are available to Altss subscribers.
What is Portfolio Concept's website?
Portfolio Concept's public website is portfolio-concept.de. Verified contact details for principals and decision-makers are available to Altss subscribers.
What type of firm is Portfolio Concept?
Portfolio Concept is classified by Altss as a Multi Family Office within the Europe region.
How does Altss source intelligence on Portfolio Concept?
Altss combines OSINT (open-source intelligence) with regulatory filings, public disclosures, and licensed data partners. Source provenance is tracked to support compliance-ready research workflows.
How fresh is the Altss profile for Portfolio Concept?
Portfolio Concept's profile is part of Altss's continuous-refresh dataset, with a full update cycle at least every 30 days and priority changes applied as new information is verified.
Company types
Confirmed
Pipeline
Indicated
Negative
Industry focuses
Confirmed
Pipeline
Indicated
Negative
Regional focuses
Confirmed
Pipeline
Indicated
Negative
Technological focuses
Confirmed
Pipeline
Indicated
Negative
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Get accessInvestment stages
Confirmed
Pipeline
Indicated
Negative
Emerging interests
Hard exclusions
ESG policy
Direct deal program
Emerging manager LP program
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Get accessManager maturity preference
Confirmed
Indicated
Ticket size (USD M, min/max)
Preferred fund size (USD M, min/max)
Investment horizon (years, min/max)
Target IRR (%)
Max leverage
Liquidity terms
Currency preference
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Get accessPhilanthropy-only themes
Political donations
Service Providers & Advisors
| Category | Firm | Years Active | Primary Contact |
|---|---|---|---|
Company Deals
| Date | Company | Type | Sector | Geography | Role | Amount | Deal Lead | Co-investors | Insight |
|---|---|---|---|---|---|---|---|---|---|
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Get accessFund Commitments
| Date | Fund | Strategy | Geography | Role | Fund size | Vintage |
|---|---|---|---|---|---|---|
Club Memberships and Associations & Advisors
| Organization | Role | Since | Notes |
|---|---|---|---|
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Get accessEvent & Conference Participation
| Event | Role | Date | Location |
|---|---|---|---|
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Continuous refresh with full update cycles at least every 30 days.
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