Name:	comScore Inc.
Industries:	Business Services and Supplies
Revenue:	$87.15M
Profit:	$19.32M
Headquarters:	11950 Democracy Road Suite 600 Reston, Virginia 20190 United States
Website:
www.comscore.com

Lists:

#36	Most Profitable
#38	Best Performers In B2B

¹ TTM figures for 31-Dec-2009

Institutional Owners of comScore Inc.

Current Overview | Past Quarters

Breakdown of Ownership of SCOR

by % of Total Shares Outstanding (% TSO)

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	Institutional Owners (57.0%)
	Other Owners (43.0%)

Note: % Total Shares Outstanding is based on the most recent 13F filing made by the instituational investor, as well as the most recent TSO figure for the indicated security.

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Name	% TSO	Shares	Shares change	Market value	Value change	% Change	Report Date
CHAMPLAIN INVESTMENT PARTNERS, LLC	3.45%	1,073,325	47,790	$14,167,890	$630,828	4.45%	2010-06-30 00:00:00
The Vanguard Group, Inc.	3.26%	1,015,152	59,299	$13,400,006	$782,747	5.84%	2010-06-30 00:00:00
BLACKROCK FUND ADVISORS	3.15%	980,891	22,940	$12,947,761	$302,808	2.34%	2010-06-30 00:00:00
SCHRODER INVESTMENT MANAGEMENT GROUP	2.99%	930,900		$12,287,880		0.00%	2010-06-30 00:00:00
MORGAN STANLEY INVESTMENT MGMT	2.92%	909,833	6,457	$12,009,795	$85,232	0.71%	2010-06-30 00:00:00
COPPER ROCK CAPITAL PARTNERS, LLC	2.45%	763,464	409,634	$10,077,725	$5,407,169	53.65%	2010-06-30 00:00:00
Henderson Group Plc	2.22%	690,378	116,457	$9,112,989	$1,537,232	16.87%	2010-06-30 00:00:00
RS INVESTMENT MANAGEMENT CO LLC	2.13%	661,845	40,730	$8,736,354	$537,636	6.15%	2010-06-30 00:00:00
BARCLAYS GLOBAL INVESTORS UK HOLDINGS LTD	2.01%	624,203	18,283	$8,239,479	$241,336	2.93%	2010-06-30 00:00:00
SPARTA ASSET MANAGEMENT, LLC	1.77%	552,582	76,132	$7,294,082	$1,004,942	13.78%	2010-06-30 00:00:00
ASHFORD CAPITAL MANAGEMENT INC	1.62%	504,900	-10,800	$6,664,680	-$142,560	-2.14%	2010-06-30 00:00:00
PIER CAPITAL, LLC	1.59%	494,755	494,755	$6,530,766	$6,530,766	100.00%	2010-06-30 00:00:00
CHINOOK CAPITAL MANAGEMENT	1.50%	467,363	-1,551	$6,169,192	-$20,473	-0.33%	2010-06-30 00:00:00
MANNING & NAPIER ADVISORS INC	1.42%	443,150	-58,200	$5,849,580	-$768,240	-13.13%	2010-06-30 00:00:00
DWS Intermediate Tax/AMT Free A	1.42%	443,150	-58,200	$5,849,580	-$768,240	-13.13%	2010-06-30 00:00:00
CONESTOGA CAPITAL ADVISORS, LLC	1.41%	440,291	20,146	$5,811,841	$265,927	4.58%	2010-06-30 00:00:00
FORT WASHINGTON INVESTMENT ADVISORS INC /OH/	1.37%	426,229	48,355	$5,626,223	$638,286	11.34%	2010-06-30 00:00:00
BLACKROCK GROUP LTD	1.35%	421,782	-13,897	$5,567,522	-$183,440	-3.29%	2010-06-30 00:00:00
State Street Corporation	1.35%	420,389	3,448	$5,549,135	$45,514	0.82%	2010-06-30 00:00:00
CLEARBRIDGE ADVISORS, LLC	1.34%	415,802	22,164	$5,488,586	$292,565	5.33%	2010-06-30 00:00:00
Wells Fargo	1.27%	396,331	199,565	$5,231,569	$2,634,258	50.35%	2010-06-30 00:00:00
Northern Trust Corporation	1.08%	334,977	5,179	$4,421,696	$68,363	1.55%	2010-06-30 00:00:00
DIMENSIONAL FUND ADVISORS LP	1.06%	331,069	23,304	$4,370,111	$307,613	7.04%	2010-06-30 00:00:00
WEATHERBIE M A & CO INC/MA	0.98%	304,765	304,765	$4,022,898	$4,022,898	100.00%	2010-06-30 00:00:00
BLACKROCK ADVISORS LLC	0.85%	265,750	-2,700	$3,507,900	-$35,640	-1.02%	2010-06-30 00:00:00
NEXT CENTURY GROWTH INVESTORS LLC	0.82%	253,795	253,795	$3,350,094	$3,350,094	100.00%	2010-06-30 00:00:00
FRONTIER CAPITAL MANAGEMENT CO LLC	0.77%	240,338	-1,740	$3,172,462	-$22,968	-0.72%	2010-06-30 00:00:00
POLAR CAPITAL LLP	0.71%	220,644	-58,356	$2,912,501	-$770,299	-26.45%	2010-06-30 00:00:00
NORTHERN TRUST CO OF CONNECTICUT	0.64%	200,644	64,739	$2,648,501	$854,555	32.27%	2010-06-30 00:00:00
The Bank of New York Mellon Corporation	0.57%	178,141	7,959	$2,351,461	$105,059	4.47%	2010-06-30 00:00:00
RUSSELL FRANK CO/	0.55%	171,985	171,985	$2,270,202	$2,270,202	100.00%	2010-06-30 00:00:00
Ameriprise Financial, Inc.	0.39%	119,859	106,185	$1,582,139	$1,401,642	88.59%	2010-06-30 00:00:00
TIAA CREF INVESTMENT MANAGEMENT LLC	0.37%	116,288	896	$1,535,002	$11,827	0.77%	2010-06-30 00:00:00
PUBLIC SECTOR PENSION INVESTMENT BOARD	0.33%	103,900	18,200	$1,371,480	$240,240	17.52%	2010-06-30 00:00:00
BlackRock Investment Management	0.32%	100,810	21,694	$1,330,692	$286,361	21.52%	2010-06-30 00:00:00
MUTUAL OF AMERICA CAPITAL MANAGEMENT CORP	0.32%	98,233	1,306	$1,296,676	$17,239	1.33%	2010-06-30 00:00:00
Principal Financial Group, Inc.	0.28%	88,601	7,053	$1,169,533	$93,100	7.96%	2010-06-30 00:00:00
LEE MUNDER CAPITAL GROUP, LLC	0.28%	87,222	87,222	$1,151,330	$1,151,330	100.00%	2010-06-30 00:00:00
SUFFOLK CAPITAL MANAGEMENT LLC	0.24%	75,000		$990,000		0.00%	2010-06-30 00:00:00
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	0.23%	72,590	6,290	$958,188	$83,028	8.67%	2010-06-30 00:00:00
MANATUCK HILL PARTNERS, LLC	0.22%	70,000		$924,000		0.00%	2010-06-30 00:00:00
GEODE CAPITAL MANAGEMENT LLC	0.22%	67,684	2,794	$893,429	$36,881	4.13%	2010-06-30 00:00:00
BLAIR WILLIAM & CO/IL	0.20%	62,626	-56,194	$826,663	-$741,761	-89.73%	2010-06-30 00:00:00
CREDIT SUISSE AG/	0.17%	53,637	-39,993	$708,008	-$527,908	-74.56%	2010-06-30 00:00:00
Prudential Financial, Inc.	0.17%	52,107	6,120	$687,812	$80,784	11.75%	2010-06-30 00:00:00
SCHWAB CHARLES INVESTMENT MANAGEMENT INC	0.15%	47,861	792	$631,765	$10,454	1.65%	2010-06-30 00:00:00
Axa	0.15%	47,839	47,839	$631,475	$631,475	100.00%	2010-06-30 00:00:00
RHUMBLINE ADVISERS	0.15%	47,412	6,250	$625,838	$82,500	13.18%	2010-06-30 00:00:00
NEW YORK STATE COMMON RETIREMENT FUND	0.15%	47,200		$623,040		0.00%	2010-06-30 00:00:00
TECHNICAL FINANCIAL SERVICES LLC	0.15%	45,255	45,255	$597,366	$597,366	100.00%	2010-06-30 00:00:00

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Note: Market value of investments calculated using close of business price as of 2010-06-30 00:00:00.

What do these items mean?