NEW YORK ( TheStreet) -- Investors looking for a broader sustainability benchmark get their wish at the end of November when Dow Jones Indexes and SAM, a firm that specializes in sustainability investing, launch a new index. The Dow Jones Sustainability World Enlarged Index will track the performance of 20% of the most sustainable companies of the 2,500 largest companies in the Dow Jones Global Total Stock Market Index. The new index will have 513 components and a market cap of $11.5 trillion, as of mid-November. Key holdings include Procter & Gamble ( PG), IBM ( IBM), Johnson & Johnson ( JNJ), General Electric ( GE) and Chevron ( CVX). Rodrigo Amandi, managing director of SAM Indexes, said the DJSI World Enlarged was prompted by investor demand. "SAM Indexes has repeatedly received inquiries for a more extensive investment universe from institutional investors managing sustainability portfolios," he said in a statement. The new index will be reviewed annually. As is the case with the entire family of Dow Jones Sustainability Indexes, SAM evaluates companies based on a economic, environmental and social performance. -- Written by Melinda Peer in New York. >To contact the writer of this article, click here: Melinda Peer. >To follow the writer on Twitter, go to http://twitter.com/mpeer_greennews. >To submit a news tip, send an email to: email@example.com.