We ourselves used to track the number of "smart money" investors in biotech stocks like BLUE (bluebird bio) in Excel spreadsheets. The motivation for Navlio was to make this easier and more functional. Using BLUE as an example, the number of "smart money" investors increased from 2 to 10 before its stock price increased over 6x. We used Navlio to find other stocks like BLUE that hedge funds were buying and invested in some of those as well. If you want to actively buy stocks, this is a way to complement your research.