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COMSCORE INC
COMSCORE INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q1)
Portfolio Summary: 177 Institutional holders with a total value of $1,666,465,870.
#
Manager Name
Shares
Value ($)
%
Options
Notes
151 TIAA CREF INVESTMENT MANAGEMENT LLC 310,059 15,875,000 0.95%
152 BLACKROCK ADVISORS LLC 322,088 16,491,000 0.99%
153 CASTLEARK MANAGEMENT LLC 331,711 16,984,000 1.02%
154 CADIAN CAPITAL MANAGEMENT, LP 349,775 17,908,000 1.07%
155 AMERIPRISE FINANCIAL INC 358,346 18,349,000 1.10%
156 Hood River Capital Management LLC 392,567 20,099,000 1.21%
157 WELLINGTON MANAGEMENT GROUP LLP 468,980 24,012,000 1.44%
158 HHR Asset Management, LLC 474,490 24,294,000 1.46%
159 RENAISSANCE TECHNOLOGIES LLC 480,000 24,576,000 1.47%
160 KORNITZER CAPITAL MANAGEMENT INC /KS 497,964 25,496,000 1.53%
161 BAMCO INC /NY/ 500,000 25,600,000 1.54%
162 Bank of New York Mellon Corp 502,866 25,747,000 1.55%
163 LOOMIS SAYLES & CO L P 506,547 25,935,000 1.56%
164 NORTHERN TRUST CORP 592,483 30,335,000 1.82%
165 Century Capital Management, LLC 604,601 30,956,000 1.86%
166 STATE STREET CORP 655,042 33,542,000 2.01%
167 NORGES BANK 656,298 33,602,000 2.02%
168 Pivot Point Capital Partners, LLC 782,867 40,083,000 2.41%
169 RS INVESTMENT MANAGEMENT CO LLC 808,521 41,396,000 2.48%
170 BlackRock Institutional Trust Company, N.A. 952,325 48,759,000 2.93%
171 TimesSquare Capital Management, LLC 1,150,650 58,913,000 3.54%
172 COLUMBUS CIRCLE INVESTORS 1,284,955 65,790,000 3.95%
173 Clearbridge Investments, LLC 1,286,893 65,889,000 3.95%
174 LORD, ABBETT & CO. LLC 1,526,115 78,137,000 4.69%
175 BlackRock Fund Advisors 2,015,990 103,219,000 6.19%
176 VANGUARD GROUP INC 2,387,193 122,224,000 7.33%
177 PRIMECAP MANAGEMENT CO/CA/ 4,135,532 211,739,000 12.71%
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From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.