Global FDI flows declined since 2015, hindering progress towards the SDGs. FfD4 should seek to leverage partnerships between investment stakeholders, enhance countries’ readiness to attract investment in SDG, and promote home-country initiatives to channel investment. SWFs and institutional investors possess substantial capital that can be directed toward infrastructure and SDG, while more de-risking initiatives need to be developed. Systematic efforts to advance sustainability standards and address greenwashing is essential to grow sustainable finance.