For inward FDI, the Swiss federal Office of justice does, on a yearly basis, record the net-purchases of holiday homes (number of transactions) by non-residents. Based on that we estimate the market value of these transactions. Concerning outward FDI, we do treat the real estate transactions of collective investment funds and of pension funds as residential real estate (Industry Code PRV_RE). Real estate transactions of private persons however are not included in our outward FDI statistics.