Regional preferences add further complexity to applying ESG criteria to fixed-income portfolios, Mr. Palmer said.
"In the U.K., we have a lot of regulation that's impacting our clients. In Australia, there's a focus on modern slavery in supply chains. And in the U.S., social and inclusion and diversity aspects are exceptionally important," he said.
Mr. Palmer said ESG trends may be different across regions but they could be seen as part of a long-term trend toward social progress, so it's important to consider the broader range of metrics, even when there are pronounced regional interests.
Ashley Schulten, a managing director and head of responsible investing, global fixed income, at BlackRock Inc. in New York said: "We canvass our global investors to understand what it is they want to express within ESG-tilted fixed-income portfolios, and then we build the tools to help them do precisely that."
As an example, Ms. Schulten said some BlackRock clients have asked for ways to express an ESG-tilted view through investments in the U.S. municipal bond market.
"There are public transport projects, water-saving projects, public housing opportunities — all the sorts of things that clients interested in external impact want to fund. Our muni team evaluates investments to see how they are lending themselves to, for example, an environmental or social benefit to a third party, and then we adjust those exposures accordingly," she said.
Ms. Schulten said active credit managers can better evaluate ESG factors and understand how those factors affect the financial risk and reward of the holdings they manage through a variety of datasets. She cited data, for example, from organizations such as the Transition Pathway Initiative, an asset owner-led effort that assesses companies' preparedness for the transition to a low-carbon economy; the Science Based Targets initiative, which helps companies set science-based emissions reduction targets; and MSCI Inc.'s set of Implied Temperature Rise metrics, a forward-looking metric designed to show the temperature alignment of companies, portfolios and funds with global temperature goals.
"As an industry, especially around climate, we are moving from a place where we're reliant on a snapshot of a company today to one that is much more forward-looking," she said.
Ms. Schulten said the forward-looking evaluation of data can include factors such as decarbonization pledges, research and development, capital expenditure plans and the issuer's alignment to net-zero sector pathways, which give portfolio managers insight into both the financial materiality of investments and the external environmental impact.
BlackRock managed approximately $58 billion in sustainable fixed-income strategies as of Dec. 31.