SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934 (Amendment No. )

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The Calvert Fund

Calvert Impact Fund, Inc.

Calvert Management Series

Calvert Responsible Index Series, Inc.

Calvert Social Investment Fund

Calvert World Values Fund, Inc.

Calvert Variable Series, Inc.

Calvert Variable Products, Inc.

(Name of Registrant as Specified in Its Charter)

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(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

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February 2021

URGENT

Re: Your investment with Calvert Funds.

Dear Shareholder,

We have attempted to contact you regarding an important matter pertaining to your investment in Calvert Funds.

Please contact us immediately at 855-200-8031 Monday through Friday between the hours of 9:00 a.m. to 10:00 p.m. Eastern Time.

This matter is very important and will only take a moment of your time.

Broadridge Financial Solutions has been engaged by Calvert Funds to contact you.

Thank you in advance for your assistance with this matter.

Sincerely,

Michael Collins

Vice President and General Manager