Mae'n rhaid i Weinyddwyr Pensiynau sicrhau bod buddiannau'u haelodau'n cael eu gwasanaethu'n dda. Mae hyn yn egwyddor hirsefydlog. Mae'n golygu sicrhau enillion ariannol ar eu buddsoddiadau er budd eu haelodau. Nid yw'n golygu diystyru materion moesegol, cymdeithasol ac amgylcheddol ehangach.
Pensions Administrators must ensure the interests of their members are well served. This is a long standing principle. It means securing financial returns on their investments for the benefit of their members. But it does not mean disregarding wider ethical, social and environmental issues.