UNITEDSTATES
SECURITIESANDEXCHANGECOMMISSION
Washington,D.C.20549
FORM N-PX
ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED MANAGEMENT
INVESTMENT COMPANY
Investment Company Act file number 811-08349
Name of Fund: BlackRock MuniHoldings Insured Investment Fund (MFL)
Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809
Name and address of agent for service: Anne Ackerley, Chief Executive Officer, BlackRock MuniHoldings Insured
Investment Fund, 55 East 52nd Street, New York City, NY 10055.
Registrant’s telephone number, including area code: (800) 882-0052, Option 4
Date of fiscal year end: 08/31
Date of reporting period: 07/01/2009 – 06/30/2010
Item 1 – Proxy Voting Record – There were no matters relating to a portfolio security considered at any shareholder
meeting held during the period ended June 30, 2010 with respect to which the registrant was entitled to vote.
Pursuant to the requirements of the Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.
BlackRock MuniHoldings Insured Investment Fund
By: /s/ Anne Ackerley
Anne Ackerley
Chief Executive Officer of
BlackRock MuniHoldings Insured Investment Fund
Date: August 23, 2010