Most Active Investors provide you the list of top 200 investors ranked in terms of number of portfolio companies.

You can access the Most Active Investors view under
"Explore Databases > Investors".

Please note that the most active institutional investors will cover only the institutions in investment industry and not the individual investors.

You can use multiple filters based on geography, sector, funding, and other performance metrics to view the Most Active Investors in the markets of interest.

For Example: You can check Most Active Investors investing in US based companies in FinTech space as shown below.
​