Sustainable Finance & Investment
Asset manager
A firm that invests capital on behalf of clients — a principal category of responsible-investment signatory, acting under mandates from asset owners.
Definition
A company that manages investments on behalf of others — pension funds, insurers, foundations and individuals — through funds and mandates. In the UN Principles for Responsible Investment (PRI) framework, asset (investment) managers are one of three signatory categories, alongside asset owners and service providers.
References
Three signatory categories — asset owners, investment managers, service providers; eligibility.
PRI six principles; signatory obligations including annual reporting; scale of the signatory base.
Overview
What it means
Asset managers are the agents of the investment chain: they select securities, construct portfolios and typically exercise stewardship — voting and engagement — on behalf of the owners whose capital they manage. Their ESG integration, stewardship quality and product claims are central to how responsible investment works in practice, and to greenwashing scrutiny of "sustainable" funds.
How it is used
Asset owners appoint managers under mandates that may specify ESG integration, exclusions, climate targets or impact objectives. Managers report to owners and, as PRI signatories, report annually on responsible-investment activities. Initiatives such as the Net Zero Asset Managers initiative organise their climate commitments.
Why it matters
Managers intermediate trillions of dollars; their capabilities and incentives largely determine whether owners' sustainability policies are implemented. The owner–manager relationship (mandates, fees, accountability) is a recurring governance issue in sustainable finance.
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