The core activity of ZILTENER INVEST AG encompasses three main areas: 1. **Real Estate**: Long-term investments in multi-family homes, particularly in urban areas of Switzerland, as well as the development and sale of condominiums. 2. **Asset Management**: Long-term and conservative investment strategy, primarily investing in shares of Swiss companies with an international focus. 3. **Direct Investments**: Investments in market-leading companies with established business models and attractive growth potential, with a medium- to long-term investment horizon and a focus on value appreciation or capital gain.