Copper Rock Capital Partners

Copper Rock Capital Partners as of Dec. 31, 2011

Portfolio Holdings for Copper Rock Capital Partners

Copper Rock Capital Partners holds 0 positions in its portfolio as reported in the December 2011 quarterly 13F filing

                {S}                      {C}       {C}    {C}     {C}   {C}   {C}   {C}        {C}             {C}     {C}     {C}

ACACIA RESEARCH          COM      003881307 6487 177678 SH  0   DEFINED          1            177678
ACACIA RESEARCH          COM      003881307 646  17698  SH  0   OTHER            1,2          17698
ACACIA RESEARCH          COM      003881307 1871 51245  SH  0   OTHER            1,3          51245
ACI WORLDWIDE INC        COM      004498101 9054 316131 SH  0   DEFINED          1            316131
ACI WORLDWIDE INC        COM      004498101 527  18417  SH  0   OTHER            1,2          18417
ACI WORLDWIDE INC        COM      004498101 1516 52931  SH  0   OTHER            1,3          52931
ACME PACKET INC          COM      004764106 3895 125996 SH  0   DEFINED          1            125996
ACME PACKET INC          COM      004764106 370  11979  SH  0   OTHER            1,2          11979
ACME PACKET INC          COM      004764106 1068 34540  SH  0   OTHER            1,3          34540
AFFILIATED MANAGERS
 GROUP INC               COM      008252108 3595 37467  SH  0   DEFINED          1            37467
AFFILIATED MANAGERS
 GROUP INC               COM      008252108 875  9119   SH  0   OTHER            1,2          9119
AFFILIATED MANAGERS
 GROUP INC               COM      008252108 2510 26156  SH  0   OTHER            1,3          26156
AGILENT TECHNOLOGIES INC COM      00846U101 28   800    SH  0   DEFINED          1            800
AIR METHODS CORP         COM      009128307 8819 104426 SH  0   DEFINED          1            104426
AIR METHODS CORP         COM      009128307 551  6521   SH  0   OTHER            1,2          6521
AIR METHODS CORP         COM      009128307 1599 18938  SH  0   OTHER            1,3          18938
AIRGAS INC               COM      009363102 2973 38070  SH  0   DEFINED          1            38070
AIRGAS INC               COM      009363102 724  9278   SH  0   OTHER            1,2          9278
AIRGAS INC               COM      009363102 2097 26862  SH  0   OTHER            1,3          26862
ALASKA AIR GROUP INC     COM      011659109 5395 71842  SH  0   DEFINED          1            71842
ALASKA AIR GROUP INC     COM      011659109 392  5219   SH  0   OTHER            1,2          5219
ALASKA AIR GROUP INC     COM      011659109 1126 14997  SH  0   OTHER            1,3          14997
ALBEMARLE CORP           COM      012653101 2502 48575  SH  0   DEFINED          1            48575
ALBEMARLE CORP           COM      012653101 600  11639  SH  0   OTHER            1,2          11639
ALBEMARLE CORP           COM      012653101 1741 33805  SH  0   OTHER            1,3          33805
ALIGN TECHNOLOGY INC     COM      016255101 3562 150126 SH  0   DEFINED          1            150126
ALIGN TECHNOLOGY INC     COM      016255101 283  11915  SH  0   OTHER            1,2          11915
ALIGN TECHNOLOGY INC     COM      016255101 815  34333  SH  0   OTHER            1,3          34333
AMERIGON INC             COM      03070L300 1981 138887 SH  0   DEFINED          1            138887
AMERISOURCEBERGEN CORP   COM      03073E105 41   1105   SH  0   DEFINED          1            1105
AMETEK INC               COM      031100100 3973 94378  SH  0   DEFINED          1            94378
AMETEK INC               COM      031100100 961  22830  SH  0   OTHER            1,2          22830
AMETEK INC               COM      031100100 2792 66307  SH  0   OTHER            1,3          66307
APPLE INC                COM      037833100 66   163    SH  0   DEFINED          1            163
APPROACH RESOURCES INC   COM      03834A103 3407 115843 SH  0   DEFINED          1            115843
ARUBA NETWORKS INC       COM      043176106 3557 192048 SH  0   DEFINED          1            192048
ARUBA NETWORKS INC       COM      043176106 248  13385  SH  0   OTHER            1,2          13385
ARUBA NETWORKS INC       COM      043176106 715  38592  SH  0   OTHER            1,3          38592
ASSURANT INC             COM      04621X108 1456 35450  SH  0   DEFINED          1            35450
ASTEC INDUSTRIES         COM      046224101 2005 62249  SH  0   DEFINED          1            62249
ATHENAHEALTH INC         COM      04685W1035178  105412 SH  0   DEFINED          1            105412
ATHENAHEALTH INC         COM      04685W103262   5334   SH  0   OTHER            1,2          5334
ATHENAHEALTH INC         COM      04685W103767   15609  SH  0   OTHER            1,3          15609
AUTOZONE INC             COM      053332102 60   184    SH  0   DEFINED          1            184
AVALONBAY COMMUNITIES    COM      053484101 39   300    SH  0   DEFINED          1            300