<SEC-DOCUMENT>0001193125-17-111370-index.html : 20170405 <SEC-HEADER>0001193125-17-111370.hdr.sgml : 20170405 <ACCEPTANCE-DATETIME>20170405132739 ACCESSION NUMBER: 0001193125-17-111370 CONFORMED SUBMISSION TYPE: N-CSRS PUBLIC DOCUMENT COUNT: 14 CONFORMED PERIOD OF REPORT: 20170131 FILED AS OF DATE: 20170405 DATE AS OF CHANGE: 20170405 EFFECTIVENESS DATE: 20170405 FILER: COMPANY DATA: COMPANY CONFORMED NAME: BLACKROCK MUNIYIELD INVESTMENT QUALITY FUND CENTRAL INDEX KEY: 0000891188 IRS NUMBER: 223196058 FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: N-CSRS SEC ACT: 1940 Act SEC FILE NUMBER: 811-07156 FILM NUMBER: 17741940 BUSINESS ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 BUSINESS PHONE: 800-441-7762 MAIL ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 FORMER COMPANY: FORMER CONFORMED NAME: BLACKROCK MUNIYIELD INSURED INVESTMENT FUND DATE OF NAME CHANGE: 20080926 FORMER COMPANY: FORMER CONFORMED NAME: BLACKROCK MUNIYIELD FLORIDA INSURED FUND DATE OF NAME CHANGE: 20070611 FORMER COMPANY: FORMER CONFORMED NAME: MUNIYIELD FLORIDA INSURED FUND /NJ/ DATE OF NAME CHANGE: 19921217 </SEC-HEADER> <DOCUMENT> <TYPE>N-CSRS <SEQUENCE>1 <FILENAME>d322400dncsrs.htm <DESCRIPTION>BLACKROCK MUNIYIELD INVESTMENT QUALITY FUND <TEXT> Document 1 - file: d322400dncsrs.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CERT <SEQUENCE>2 <FILENAME>d322400dex99cert.htm <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302 <TEXT> Document 2 - file: d322400dex99cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.906CERT <SEQUENCE>3 <FILENAME>d322400dex99906cert.htm <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906 <TEXT> Document 3 - file: d322400dex99906cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>g322328g03k77.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: g322328g03k77.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g322328g09o23.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: g322328g09o23.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>g322328g26e41.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 6 - file: g322328g26e41.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>g322328g41x70.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: g322328g41x70.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g322328g42w08.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: g322328g42w08.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g322328g43r73.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g322328g43r73.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>g322328g65b16.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: g322328g65b16.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>g322328g98u13.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: g322328g98u13.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>g322328leaf.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 12 - file: g322328leaf.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>g322615photo_01mips.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 13 - file: g322615photo_01mips.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>g322615sig_01mips.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 14 - file: g322615sig_01mips.jpg
</DOCUMENT> </SEC-DOCUMENT>