Holding Companies

Porta Group Holding AG 

Brugg Ag · Since 2008

Porta Group Management AG 

Brugg Ag · Since 2011

Porta Group Management AG is an engineering and planning firm offering services in road and traffic infrastructure, drinking water and district heating systems, hydraulic and environmental engineering, and structural engineering. Its services also include condition surveys and crack reports, environmental work, and surveying and geoinformatics including GIS and network information systems.

Posse Holding SA 

Renens Vd · Since 2016

Posse Holding SA is a corporate group that brings together subsidiaries working in painting, plastering and insulation. At group level POSSE Management SA performs central functions including management, finance, human resources, logistics & procurement and marketing.

Powder Byrne AG 

Altendorf · Since 2004

Powder Byrne AG is a specialist B2B ground operator providing tailor-made tours, itineraries and ground-handling services for FIT, small groups and MICE. The company arranges accommodation and transportation, supplies native-speaking guides and translation, offers private concierge options and 24/7 emergency support, and works with travel agents, tour operators and corporate clients for travel in Switzerland, the European Alps and the Italian Dolomites.

Power Jet Holding AG 

Oey · Since 2019

Power Jet Holding AG provides waterjet cutting, CNC machining and finishing services for a variety of materials. The company’s services include abrasive and pure‑water cutting, milling/turning/wire‑EDM operations, surface treatments and laser marking, supported by a material stock and data digitization for CAD‑based production.

P Q H Holding SA 

Fribourg · Since 2000

P Q H Holding SA is a holding company that brings together businesses in the industrial and real estate sectors; its industrial companies manufacture products for watchmaking, microelectronics, packaging and building automation. A services company centralizes finance, human resources, IT and marketing functions, while a real estate company manages the group’s assets and develops property projects.

Prakriti Projects AG 

Zurich · Since 2012

Prakriti Projects AG acts as a partnership architect between project initiators and strategic investors and makes selected investments. The firm identifies and supports projects in real estate, hospitality, agriculture (notably in Southeastern Europe) and private equity, offering financing solutions, project management and asset management services. It also operates Prakriti Connect, a network for exchange among entrepreneurs and investors.

Prakriti Unlimited AG 

Zurich · Since 2019

Prakriti Unlimited AG is an investment and advisory firm that acts as a partnership architect between visionary projects and strategic investors. It identifies and supports initiatives in real estate, hospitality, agriculture and private equity, providing services such as financing solutions, project management, asset management and direct investments.

Precitrame Services SA 

Tramelan · Since 2017

Precitrame Services SA designs, develops and manufactures machines and solutions for the production and finishing of complex small and medium micromechanical components. Its product range includes micromachining centers, CNC rotary transfer machines and finishing machines, and the company provides services such as project management, feasibility studies, pre‑series manufacturing, customer service and maintenance contracts; it holds ISO 9001:2015 certification and uses a regional and national supplier network.

Prefera Holding AG 

Sargans · Since 2002

Prefera Holding AG is the corporate group behind the Prefera services, covering real estate, fiduciary (treuhand) and audit activities. It provides property brokerage and management, fiduciary services including accounting, tax and business consulting, and statutory and special audit services.

Premium Management Group Holding AG 

Zug · Since 2009

Premium Management Group Holding AG matches organisations with keynote speakers, moderators and experts and provides booking and speaker-management services for events such as conferences, corporate meetings and digital formats.

Prétôt Holding Sàrl 

Le Locle · Since 2023

Prétôt Holding Sàrl provides roofing services including sheet-metal (ferblanterie) work, roof covering, maintenance and renovation, and the installation of photovoltaic panels, lightning protection and roof windows. The company serves private and professional clients and prepares measured estimates and technical drawings (DAO) for projects.

Prevanto Holding AG 

Zurich · Since 2015

Prevanto Holding AG provides consulting and administration services for occupational pension schemes, including actuarial reports, investment strategy and advisory, pension administration and accounting, brokerage and full pension fund management.

Prime Elements Holding AG 

Cham · Since 2013

Primekss Group Switzerland AG 

Bern · Since 2013

Primekss Group Switzerland AG provides the PrīmX steel fiber reinforced self-stressing concrete (SFRSSC) technology and related construction services for jointless, dimensionally stable concrete floors and structural elements. Its offerings cover concrete floor systems, overlays, outdoor pavements, structural concrete works, R&D and design‑build consultancy for automated and robotic warehouse and manufacturing applications.

Primestay Holding AG 

Uitikon Waldegg · Since 2016

The core activity of Primestay Holding AG consists of participating in and supporting companies involved in the development and/or management of real estate, as well as providing corporate management and administration services to these companies.

PRINZ THURN UND TAXIS AG 

Haldenstein · Since 1998

The company's core activity is private wealth management, in particular investments in securities, participations, infrastructure, real estate, construction projects, art and lifestyle (yachts, hotels) as well as the acquisition of private and commercial real estate portfolios.

Private Aviation Services GmbH 

Kreuzlingen · Since 2008

Private Aviation Services GmbH provides aviation consulting and resourcing services, including recruitment, employment and HR administration such as payroll and labour relations for pilots, cabin crew and technicians. The company also offers aircraft brokerage, long‑term wet‑lease/ACMI support, assistance with sustainable aviation fuel (SAF) procurement and advisory services for ground and airport operations.

Pro'Administration SA 

Palézieux-Village · Since 2022

Pro'Administration SA provides building drying and water-damage remediation services, including dehumidification, core-drilling drying, odour neutralisation and site drying. The company performs leak detection, thermographic and thermo-hygrographic measurements and maintains a 24/7 emergency intervention service.

Probus Pleion Holding SA 

Geneva · Since 2015

Probus Pleion Holding SA is a wealth management group providing tax‑optimised wealth management, asset management and trust and corporate services. Its services include discretionary and advisory mandates, thematic investment funds with an emerging‑markets focus, and structures for estate, succession and asset protection.