"Impact assessment is a key component of managing an impact investment portfolio, and many investors today are building methodologies that bring value
beyond simply reporting outcomes.

For many investors, the impact goal is the common thread across a portfolio of various sector, geography and instrument types and this diversification can make choosing an impact assessment methodology challenging. As such, the process for developing a methodology is often an iterative one, refined with experience and data over time.

To help inform that iterative process, this research presents sixty-eight case studies from twenty-one leading impact investors that share best practice and
debated viewpoints on impact assessment along the investment process."