Foreign Portfolio Investors, or FPIs, refer to international investors who hold assets and securities outside their country of origin. These assets can include stocks, ADRs, GDRs, bonds, mutual funds, and exchange-traded funds. Essentially, FPIs are individuals or organizations who invest in different countries, diversifying their portfolios and spreading risk. This allows for greater potential returns and can also have a positive impact on the host country's economy. FPIs play a significant role in the global financial market, and understanding their impact is crucial in the world of finance.