Calibrium AG is a Zurich, Switzerland-based family investment office serving a select client base. It allocates across real estate, listed securities and private equity as part of its broader long-term investment approach. Its wider investment mandate considers investments in the €5 million to €50 million range. In 2026, Calibrium was actively looking to make real estate investments, while remaining skeptical of fund commitments after four to five years without investing in a real estate fund. For sponsors, it stands out as a selective potential partner that scrutinizes deployment discipline and net returns rather than making routine fund commitments.