A new index series from Institutional Shareholder Services Inc.’s responsible investment unit, ISS ESG, aims to give sustainability-minded investors exposure to top environmental, social and governance (ESG) performers.

ISS ESG has announced the launch of its new index series, the Solactive ISS ESG Prime Index Series, which tracks companies that rate highly on its ESG criteria.

The indices include companies categorized as “prime” by ISS ESG, which means that they must meet or exceed sector-specific performance requirements based on the ESG risk exposure and impact of their business models, and meet certain other ESG standards.

“The indices aim to align with current market and regulatory ESG frameworks and reflect better alignment than their conventional benchmark counterparts with Paris Accord climate goals,” ISS ESG said.

The new series includes five indices covering certain market segments: global, developed markets, emerging markets, the U.S. and Europe.

“We are pleased to announce the launch of this index series in furtherance of our aim to deliver cutting-edge and industry leading ESG solutions to institutional investors, globally,” Marija Kramer, managing director with ISS ESG, said in a statement.

“With the Solactive ISS ESG Prime Index Series, investors will now be able to identify best-in-class ESG performers with both precision and efficiency,” Kramer added.