This policy paper presents key findings from the new OECD FDI Regulatory Restrictiveness Index (FDIRRI) series released in 2024, which now covers statutory restrictions on foreign direct investment (FDI) in more than 100 countries. The policy paper provides an overview of the updated FDIRRI framework and analyses the current state of statutory restrictions on FDI across countries, regions, policy areas and economic sectors as of end-December 2023. It also examines recent trends in FDI regulatory restrictiveness, with a focus on specific foreign investment rules that were either relaxed or tightened between 2018 and 2023.