UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No._______)

COMSCORE, INC.
(Name of Issuer)
-----------------------------------------------------------

Common Stock
(Title of Class of Securities)
-----------------------------------------------------------


20564W105
(CUSIP Number)
-----------------------------------------------------------

December 31, 2007
(Date of Event Which Requires Filing of this Statement)
-----------------------------------------------------------


Check the appropriate box to designate the rule pursuant to
which this Schedule is filed:

/x/ Rule 13d-1(b)
/ / Rule 13d-1(c)
/ / Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect
to the subject class of securities, and for any subsequent
amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page
shall not be deemed to be "filed" for the purpose of Section
18 of the Securities Exchange Act of 1934 ("Act") or
otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act
(however, see the Notes).

Potential persons who are to respond to the collection of
information contained in this form are not required to
respond unless the form displays a currently valid OMB
control number.

Page 1 of 7 pages

<page>


Cusip 20564W105
-----------------------------------------------------------
1
Names of Reporting Persons
I.R.S. Identification Nos. of above persons (entities only).

UBS Global Asset Management (Americas) Inc.
36-3664388
-----------------------------------------------------------
2
Check the Appropriate Box if a Member of a Group (See
Instructions)
a   / /
b   /x/ See Item 8 of attached schedule.
-----------------------------------------------------------
3
SEC USE ONLY
-----------------------------------------------------------
4
Citizenship or Place of Organization - Delaware
-----------------------------------------------------------

Number of       5.  Sole Voting Power           __________
Shares Bene-    6.  Shared Voting Power         _1,701,156
ficially        7.  Sole Dispositive Power      __________
Owned by Each   8.  Shared Dispositive Power     1,701,156
Reporting 
Person With:
-----------------------------------------------------------
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,701,156 Shares  *
-----------------------------------------------------------
10
Check if the Aggregate Amount in Row (9) Excludes Certain
Shares (See Instructions)
-----------------------------------------------------------
11
Percent of Class Represented by Amount in Row (9)
6.1%
-----------------------------------------------------------
12
Type of Reporting Person (See Instructions)
IA
-----------------------------------------------------------

* UBS Global Asset Management (Americas) Inc. disclaims
beneficial ownership of such securities.

Page 2 of 7 pages

<page>




Cusip 20564W105
-----------------------------------------------------------
1
Names of Reporting Persons
I.R.S. Identification Nos. of above persons (entities only).

Adams Street Partners, LLC
36-4395178
-----------------------------------------------------------
2
Check the Appropriate Box if a Member of a Group (See
Instructions)
a   / /
b   /x/ See Item 8 of attached schedule.
-----------------------------------------------------------
3
SEC USE ONLY
-----------------------------------------------------------
4
Citizenship or Place of Organization - Delaware
-----------------------------------------------------------

Number of       5.  Sole Voting Power           __________
Shares Bene-    6.  Shared Voting Power          1,701,156
ficially        7.  Sole Dispositive Power      __________
Owned by Each   8.  Shared Dispositive Power     1,701,156
Reporting 
Person With:
-----------------------------------------------------------
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,701,156 Shares  *
-----------------------------------------------------------
10
Check if the Aggregate Amount in Row (9) Excludes Certain
Shares (See Instructions)
-----------------------------------------------------------
11
Percent of Class Represented by Amount in Row (9)
6.1%
-----------------------------------------------------------
12
Type of Reporting Person (See Instructions)
IA
-----------------------------------------------------------

* Adams Street Partners, LLC disclaims beneficial ownership
of such securities.

Page 3 of 7 pages

<page>


Cusip 20564W105
-----------------------------------------------------------
Item 1(a).  Name of Issuer:
COMSCORE, INC.

Item 1(b).  Address of Issuer's Principal Executive Offices:
11465 Sunset Hills Road, Suite 200
Reston, Virginia  20190
-----------------------------------------------------------
Item 2(a) Name of Persons Filing:
UBS Global Asset Management (Americas) Inc.("UBS Global Asset
Management"), and Adams Street Partners, LLC ("Adams Street")

Item 2(b) Address of Principal Business Office or, if none,
Residence:
UBS Global Asset Management's principal business office is
located at:
One North Wacker Drive, Chicago, Illinois  60606
Adams Street's principal place of business is located at:
One North Wacker Drive, Suite 2200, Chicago, Illinois
60606-2807

Item 2(c) Citizenship:
Incorporated by reference to Item 4 of the cover pages.

Item 2(d) Title of Class of Securities:
The class of equity security to which the statement relates
is Common Stock (the "Common Stock") in the amount of
1,701,156 shares.  

Item 2(e) CUSIP Number:
20564W105
-----------------------------------------------------------

Item 3.  Type of Person Filing:
UBS Global Asset Management is an Investment Adviser
registered under section 203 of the Investment Advisers Act
of 1940. Adams Street is an Investment Adviser registered
under section 203 of the Investment Advisers Act of 1940.  
-----------------------------------------------------------
Item 4 (a)-(c)(iv).  Ownership:
Incorporated by reference to Items 5-11 of the cover pages.
Reporting persons' beneficial ownership results from
beneficial ownership of 1,701,156 shares of Common Stock.  

Page 4 of 7 pages

<page>








Cusip 20564W105
-----------------------------------------------------------

Item 5.  Ownership of Five Percent or Less of a Class:

If this statement is being filed to report the fact that as
of the date hereof the reporting person has ceased to be the
beneficial owner of more than five percent of the class of
securities, check the following / /.
-----------------------------------------------------------


Item 6.  Ownership of More than Five Percent on Behalf of
Another Person:

Accounts managed on a discretionary basis by UBS Global Asset
Management, and subadvised by Adams Street, have the right to
receive or the power to direct the receipt of dividends from,
or the proceeds from the sale of, the Common Stock. T. Rowe
Price Associates provides advice on securities trading. 

-----------------------------------------------------------

Item 7.  Identification and Classification of the Subsidiary
Which Acquired the Security Being Reported on By the Parent
Holding Company:

[See item 3 above]
-----------------------------------------------------------

Item 8 Identification and Classification of Members of the
Group:

Adams Street is a subadviser to UBS Global Asset Management.
UBS Global Asset Management is an indirect wholly-owned
subsidiary of UBS AG.  T. Rowe Price Associates provides
advice on securities trading.  Neither UBS Global Asset
Management, Adams Street Partners, nor T. Rowe Price affirms
the existence of a group within the meaning of Rule
13d-5(b)(1).  See Exhibit 1.
-----------------------------------------------------------

Item 9 Notice of Dissolution of Group:
Not Applicable

Page 5 of 7 
<page>










Cusip 20564W105
-----------------------------------------------------------

Item 10 Certification:

By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were acquired
and are held in the ordinary course of business and were not
acquired and are not held for the purpose of or with the
effect of changing or influencing the control of the issuer
of the securities and were not acquired and are not held in
connection with or as a participant in any transaction
having that purpose or effect.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this
statement is true, complete and correct.

Date:  February 12,2008

UBS GLOBAL ASSET MANAGEMENT (AMERICAS) INC.


By: Mark F. Kemper     		By: Michael J. Calhoun
      Mark F. Kemper               	Michael J. Calhoun
      Secretary                         Assistant Secretary

ADAMS STREET PARTNERS, LLC


By: Michael J. Jacobs
           Michael J. Jacobs
     Vice President


Page 6 of 7 pages
<page>
















EXHIBIT 1
AGREEMENT TO MAKE A JOINT FILING

UBS Global Asset Management (Americas) Inc., a registered
investment adviser, and Adams Street Partners, LLC, a
registered investment adviser, each agrees that this Schedule
13G (including all amendments thereto) is filed by and on
behalf of each such party.

Date:  February 12, 2008

UBS GLOBAL ASSET MANAGEMENT (AMERICAS) INC.



By: Mark F. Kemper     		By: Michael J. Calhoun
      Mark F. Kemper               	Michael J. Calhoun
      Secretary                     	Assistant Secretary

ADAMS STREET PARTNERS, LLC


By: Michael J. Jacobs
           Michael J. Jacobs
    Vice President



Page 7 of 7 pages

<page>