0001752724-21-155786.txt : 20210726 0001752724-21-155786.hdr.sgml : 20210726 20210726164728 ACCESSION NUMBER: 0001752724-21-155786 CONFORMED SUBMISSION TYPE: NPORT-P PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210528 FILED AS OF DATE: 20210726 PERIOD START: 20210531 FILER: COMPANY DATA: COMPANY CONFORMED NAME: BLACKROCK SERIES, INC. CENTRAL INDEX KEY: 0001062806 IRS NUMBER: 000000000 STATE OF INCORPORATION: MD FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: NPORT-P SEC ACT: 1940 Act SEC FILE NUMBER: 811-08797 FILM NUMBER: 211114697 BUSINESS ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 09809 BUSINESS PHONE: 800-441-7762 MAIL ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 09809 FORMER COMPANY: FORMER CONFORMED NAME: MERCURY FUNDS INC DATE OF NAME CHANGE: 20010827 FORMER COMPANY: FORMER CONFORMED NAME: MERCURY ASSET MANAGEMENT FUNDS INC DATE OF NAME CHANGE: 19980714 FORMER COMPANY: FORMER CONFORMED NAME: MERCURY ALPHA FUND INC DATE OF NAME CHANGE: 19980601 0001062806 S000002291 BlackRock International Fund C000005981 Investor A C000005983 Investor C C000005984 Institutional C000101856 Class R Shares C000198221 Class K NPORT-P 1 primary_doc.xml NPORT-P false 0001062806 XXXXXXXX S000002291 C000005984 C000101856 C000005981 C000198221 C000005983 BlackRock Series, Inc. 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Ann Frechette Ann Frechette Assistant Treasurer