Investment Index

This content has been copied from their web site because it summarizes their purpose and direction:

KLD’s Domini 400 Social^SM Index (DS400) is a float-adjusted market capitalization weighted common stock index modeled on the S&P 500^® Index. The DS400 is the first benchmark for equity portfolios subject to multiple social screens. It is a widely recognized benchmark for measuring the impact of social screening on financial returns and the performance of socially screened portfolios.

http://www.kld.com/indexes/ds400index/index.html