Abstract: the article describes the features of the development of regional infrastructure and its practical role in the formation of the socio-economic viability of Russian regions. The mechanism of public-private partnerships are analyzed, where, thanks to investments by institutional investors, regional infrastructure is being developed. World experience in investment activity shows that without creating an effective national stock market, economic growth is impossible. One of the most significant institutions of the stock market is institutional (collective) investors, whose activity allows organizing long-term investments of savings in securities. It provides tools for pensions and savings, which is positively reflected in the welfare of the population as a whole. Thus, the trend in international practice is to reduce the share of the banking sector and increase the share of institutional investors in the distribution of financial resources in the investment market.
Keywords: regional infrastructure; investments; institutional investors; real sector of the economy; capital investment; startup; scaleup; cluster policy