India, June 30 -- There was a time when successful investing was closely linked to speed. Getting information first, reacting before everyone else and spotting opportunities early often made the difference. Technology has made much of that advantage available to almost everyone.

Yet some of the world's largest and most experienced investors are competing on a completely different advantage. They are not trying to be faster than everyone else. They are simply able to stay invested for longer.

Whether it is a pension fund financing infrastructure, a university endowment backing private markets or a family office investing across generations, these institutions often have something many investors do not: time. Increasingly, that ability to...