TRUST-AGN Holding GmbH Established in 2015 in Berlin by Gidi Farhi and Nils Ellerkamp, TRUST-AGN Holding GmbH provides consultation, allocation, financing and investment management services in the field of housing and real estate. We provide services to private or business investors who are interested in purchasing residence- or investment properties in Germany, with strong base in Berlin and Germany's main cities. For existing property owners, we offer full turnkey solutions of asset- and investment management, technical supervision, due diligence, rentals and sales management.