Holding company in
Zollikon

Contract Media AG

Since 1998 · 1–10 empl.

Contract Media AG is an independent agency for holistic corporate communications. The firm provides strategic communication consulting — including online and social media presence — investor relations, public affairs, crisis and M&A communication, legal PR, media coaching and training, event planning, publishing and monitoring.

Rohr Max Holding AG

Since 2007 · 1–10 empl.

Rohr Max Holding AG provides services in pipe and drain cleaning, CCTV pipe inspection, inliner pipe rehabilitation and ventilation cleaning. The company also offers a 24-hour emergency service, consulting and free inspections.

Dr. Gerhard Landert Holding AG

Since 2013 · 1–10 empl.

Dr. Gerhard Landert Holding AG is associated with Dr. Gerhard Landert; the website lists him as the owner and describes his ongoing research and advisory activities. The site states that Landert Family Office provided bespoke wealth management and advisory services but ceased offering financial intermediary services from 2022 and that parts of the team were integrated into Private Client Bank AG.

Gartmann Holding AG

Since 2018 · 1–10 empl.

Gartmann Holding AG is a corporate group that develops, constructs and manages residential real estate and holds investments in building consortia and property companies. Its core activities include land acquisition and project development to building readiness, and acting as general contractor for rental and owner-occupied housing.

Swiss Asset Partners Holding AG

Since 2003 · 21–50 empl.

Conciel Holding AG

Since 2013 · 1–10 empl.

Conciel Holding AG develops a decentralized, encrypted software platform for concierge, communication and commerce services. Offerings include CONCIEL ID for a verified yet concealed digital identity, AURATECH security technologies and encrypted messaging, a personal AI assistant, and platform tools for bookings and business integration.

winsight GmbH

Since 2019 · 1–10 empl.

winsight GmbH provides corporate advisory and consulting services to entrepreneurs, family business owners, private equity investors, CEOs and board chairmen. It also undertakes selected leadership roles and governance mandates, including for listed companies.

DHG Holding AG

Since 2017 · 1–10 empl.·5.0(1)

DHG Holding AG is a real estate and construction group that invests in, develops and builds residential and commercial properties. Its activities also include property management, facility services and hospitality across the property lifecycle.

BAUS AG

Since 2025 · 1–10 empl.

BAUS AG is an architecture and construction management firm focused on strategic planning, project development, and the realization of building projects. The company also provides consulting, client representation, general planning, and construction management services.

Ocarrat Investments GmbH

Since 2024 · 1–10 empl.

Ocarrat Investments GmbH is a proprietary trading company that develops and manages futures and options strategies. Its activities include combining strategies for risk management and capital protection, as well as providing digital tools to model and report on trading strategies.

Grauwiler & Cie GmbH

Since 2025 · 1–10 empl.

Grauwiler & Cie GmbH advises on investments, with a focus on private equity and real estate, as well as on financing and corporate strategy. It analyses, structures and supports investment projects and equity participations, and assists companies with raising capital, succession solutions, strategic development, transformation and growth.

Wertstein AG

Since 2023 · 1–10 empl.