Supplement to:
Calvert Socially Responsible Prospectus
Calvert Social Investment Fund
and
Class I (Institutional) Shares Prospectus
Calvert Social Investment Fund
Prospectuses dated January 31, 2000
Date of Supplement: December 6, 2000
The name of the Calvert Social Investment Fund (CSIF) Managed Index Portfolio
will be changed to CSIF Enhanced Equity Portfolio, effective December 29, 2000.
All references in the Prospectuses to "Managed Index" should be changed to
"Enhanced Equity" as of that date.
