<SEC-DOCUMENT>0001193125-13-209339.txt : 20130509
<SEC-HEADER>0001193125-13-209339.hdr.sgml : 20130509
<ACCEPTANCE-DATETIME>20130509091918
ACCESSION NUMBER:		0001193125-13-209339
CONFORMED SUBMISSION TYPE:	13F-HR
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20130331
FILED AS OF DATE:		20130509
DATE AS OF CHANGE:		20130509
EFFECTIVENESS DATE:		20130509

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FRONTIER CAPITAL MANAGEMENT CO LLC
		CENTRAL INDEX KEY:			0000351173
		IRS NUMBER:				042715137
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		13F-HR
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-01185
		FILM NUMBER:		13826747

	BUSINESS ADDRESS:	
		STREET 1:		99 SUMMER ST
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		6172610777

	MAIL ADDRESS:	
		STREET 1:		99 SUMMER ST
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FRONTIER CAPITAL MANAGEMENT CO INC
		DATE OF NAME CHANGE:	19990326

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FRONTIER CAPITAL MANAGEMENT CORP
		DATE OF NAME CHANGE:	19810306
</SEC-HEADER>
<DOCUMENT>
<TYPE>13F-HR
<SEQUENCE>1
<FILENAME>d532182d13fhr.txt
<DESCRIPTION>13F-HR
<TEXT>
<PAGE>

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

                                   Form 13F

                              FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: March 31, 2013

Check here if Amendment            {  };  Amendment Number: ____________
This Amendment (check only one.):  {  }   is a restatement.
                                   {  }   adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:     Frontier Capital Management Co., LLC
Address:  99 Summer Street, 19th Floor
          Boston, MA 02110

13F File Number: 28-01185 _____

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:  Mr. William J. Ballou
Title: Chief Operating Officer & General Counsel
Phone: (617) 261-0777

Signature, Place and Date of Signing:

    /S/ William J. Ballou         Boston, MA              May 08, 2013
   -----------------------  -----------------------  -----------------------
         [Signature]             [City, State]               [Date]

Report Type

{X}  13 F HOLDINGS REPORT

{ }  13 F NOTICE

{ }  13 F COMBINATION REPORT

I am signing this report as required by the Securities Exchange Act of 1934.

<PAGE>

SEC13F.LNS                FRONTIER CAPITAL MANAGEMENT

                             FORM 13F SUMMARY PAGE
                             AS OF DATE: 03/31/13
                         RUN DATE: 04/01/13 4:37 P.M.

REPORT SUMMARY:

NUMBER OF OTHER INCLUDED MANAGERS:       0
FORM 13F INFORMATION TABLE ENTRY TOTAL:  317
FORM 13F INFORMATION TABLE VALUE TOTAL:  $10,777,122,569.00

LIST OF OTHER INCLUDED MANAGERS:

NO.     13F FILE NUMBER     NAME

<PAGE>

<TABLE>
<CAPTION>
                                       TITLE OF            VALUE   SHARES/ SH/ PUT/ INVESTMENT  OTHER     VOTING AUTHORITY
NAME OF ISSUER                          CLASS     CUSIP   (x$1000) PRN AMT PRN CALL DISCRETION MANAGER  SOLE   SHARED  NONE
--------------                         -------- --------- -------- ------- --- ---- ---------- ------- ------- ------ -------
<S>                                    <C>      <C>       <C>      <C>     <C> <C>  <C>        <C>     <C>     <C>    <C>
A.O. Smith Corp.                         COM    831865209   86666  1178006 SH          SOLE             720673   0     457333
Abiomed Inc.                             COM    003654100    4509   241530 SH          SOLE             154940   0      86590
Abraxas Petroleum Corp.                  COM    003830106    3645  1577910 SH          SOLE            1016530   0     561380
Accuride Corp.                           COM    00439T206    4221   783062 SH          SOLE             679792   0     103270
ACE Ltd.                                 COM    H0023R105    4556    51210 SH          SOLE              51210   0          0
Actavis Inc.                             COM    00507K103   88401   959738 SH          SOLE             655515   0     304223
Adtran Inc.                              COM    00738A106    4734   240919 SH          SOLE             154229   0      86690
Advanced Energy Industries Inc.          COM    007973100    7250   396184 SH          SOLE             343744   0      52440
Advent Software Inc.                     COM    007974108   30118  1076799 SH          SOLE             717270   0     359529
Advisory Board Co.                       COM    00762W107   44865   854244 SH          SOLE             476480   0     377764
Agnico-Eagle Mines Ltd.                  COM    008474108   15995   389750 SH          SOLE             279690   0     110060
Akamai Technologies Inc.                 COM    00971T101   44330  1255087 SH          SOLE             875210   0     379877
Alaska Air Group Inc.                    COM    011659109   60890   952004 SH          SOLE             624110   0     327894
Albemarle Corp.                          COM    012653101   72920  1166343 SH          SOLE             715043   0     451300
Allegheny Technologies Inc.              COM    01741R102   40011  1261794 SH          SOLE             824270   0     437524
Alliance Data Systems Corp.              COM    018581108  104203   643665 SH          SOLE             419620   0     224045
Allied World Assurance Company Holding   COM    H01531104  115787  1248777 SH          SOLE             757807   0     490970
Allscripts Healthcare Solutions Inc.     COM    01988P108    3707   272771 SH          SOLE             234171   0      38600
Altera Corp.                             COM    021441100   74818  2109929 SH          SOLE            1388789   0     721140
Altra Holdings Inc.                      COM    02208R106   11658   428294 SH          SOLE             371819   0      56475
Ameresco Inc. Cl A                       COM    02361E108    2764   373468 SH          SOLE             206314   0     167154
American International Group Inc.        COM    026874784    2743    70660 SH          SOLE              70660   0          0
Ametek Inc.                              COM    031100100   59671  1376180 SH          SOLE             909971   0     466209
Amphenol Corp. Cl A                      COM    032095101   62342   835128 SH          SOLE             552438   0     282690
Anadarko Petroleum Corp.                 COM    032511107    4311    49300 SH          SOLE              49300   0          0
Apogee Enterprises Inc.                  COM    037598109    9463   326883 SH          SOLE             210470   0     116413
Apple Inc.                               COM    037833100    7513    16973 SH          SOLE              16973   0          0
Argo Group International Holdings Ltd.   COM    G0464B107   10994   265679 SH          SOLE             230547   0      35132
Arris Group Inc.                         COM    04269Q100   12956   754589 SH          SOLE             485068   0     269521
Arthur J. Gallagher & Co.                COM    363576109   54700  1324140 SH          SOLE             876400   0     447740
Aspen Insurance Holdings Ltd.            COM    G05384105   12797   331708 SH          SOLE             287942   0      43766
Atwood Oceanics Inc.                     COM    050095108   25172   479100 SH          SOLE             266910   0     212190
Autoliv Inc.                             COM    052800109   17456   252471 SH          SOLE             163102   0      89369
Avid Technology Inc.                     COM    05367P100     810   129219 SH          SOLE              85399   0      43820
B/E Aerospace Inc.                       COM    073302101  136773  2268969 SH          SOLE            1523893   0     745076
Bed Bath & Beyond Inc.                   COM    075896100   31158   483675 SH          SOLE             319550   0     164125
Belden Inc.                              COM    077454106  127164  2462027 SH          SOLE            1580256   0     881771
BioMarin Pharmaceutical Inc.             COM    09061G101    5850    93967 SH          SOLE              60827   0      33140
BlackRock Inc.                           COM    09247X101    6341    24685 SH          SOLE              24685   0          0
Bonanza Creek Energy Inc.                COM    097793103   66173  1711235 SH          SOLE            1156335   0     554900
Briggs & Stratton Corp.                  COM    109043109    6201   250059 SH          SOLE             216889   0      33170
Bright Horizons Family Solutions Inc.    COM    109194100     784    23210 SH          SOLE              12130   0      11080
Brightcove Inc.                          COM    10921T101    5699   917732 SH          SOLE             590630   0     327102
Broadcom Corp.                           COM    111320107    3973   114570 SH          SOLE             114570   0          0
Brown-Forman Corp. Cl B                  COM    115637209   42121   589934 SH          SOLE             394255   0     195679
Cabela's Inc.                            COM    126804301   29002   477170 SH          SOLE             315900   0     161270
Cabot Corp.                              COM    127055101   17014   497482 SH          SOLE             341910   0     155572
Cabot Microelectronics Corp.             COM    12709P103    6888   198229 SH          SOLE             127449   0      70780
Cabot Oil & Gas Corp.                    COM    127097103   74977  1108970 SH          SOLE             756612   0     352358
Cadence Design Systems Inc.              COM    127387108   90362  6486883 SH          SOLE            4039860   0    2447023
Cameron International Corp.              COM    13342B105   48395   742260 SH          SOLE             490800   0     251460
</TABLE>

<PAGE>

<TABLE>
<S>                                        <C> <C>       <C>    <C>     <C>   <C>    <C>     <C> <C>
CapitalSource Inc.                         COM 14055X102  41094 4271735 SH    SOLE   2749665 0   1522070
CARBO Ceramics Inc.                        COM 140781105  27247  299190 SH    SOLE    196640 0    102550
Carlisle Cos.                              COM 142339100  61082  901042 SH    SOLE    571662 0    329380
CarMax Inc.                                COM 143130102  34634  830540 SH    SOLE    549980 0    280560
Carrizo Oil & Gas Inc.                     COM 144577103  95016 3687070 SH    SOLE   2379794 0   1307276
Catamaran Corp                             COM 148887102  72985 1376305 SH    SOLE    919774 0    456531
Celadon Group Inc.                         COM 150838100  10460  501424 SH    SOLE    435346 0     66078
Celanese Corp. Series A                    COM 150870103  46022 1044760 SH    SOLE    712770 0    331990
Centene Corp.                              COM 15135B101  59197 1344170 SH    SOLE    817570 0    526600
Cerner Corp.                               COM 156782104  26117  275669 SH    SOLE    182940 0     92729
Charles River Laboratories Internation     COM 159864107  23796  537520 SH    SOLE    298430 0    239090
Chart Industries Inc.                      COM 16115Q308  43519  543920 SH    SOLE    336300 0    207620
Cheesecake Factory Inc.                    COM 163072101  15569  403239 SH    SOLE    224976 0    178263
Chico's FAS Inc.                           COM 168615102  38968 2319539 SH    SOLE   1413580 0    905959
CIBER Inc.                                 COM 17163B102   4969 1057248 SH    SOLE    915858 0    141390
Cisco Systems Inc.                         COM 17275R102   3772  180530 SH    SOLE    180530 0         0
Citrix Systems Inc.                        COM 177376100  63998  887010 SH    SOLE    601520 0    285490
CLARCOR Inc.                               COM 179895107  30778  587582 SH    SOLE    329952 0    257630
Cogent Communications Group Inc.           COM 19239V302  94138 3565832 SH    SOLE   2269615 0   1296217
Cognizant Technology Solutions Corp.       COM 192446102   4849   63280 SH    SOLE     63280 0         0
Columbus McKinnon Corp.                    COM 199333105   2807  145810 SH    SOLE    126575 0     19235
Computer Sciences Corp.                    COM 205363104  32507  660300 SH    SOLE    436760 0    223540
comScore Inc.                              COM 20564W105   3907  232828 SH    SOLE    149313 0     83515
Comstock Resources Inc.                    COM 205768203   5365  330133 SH    SOLE    286673 0     43460
Concho Resources Inc.                      COM 20605P101  59946  615270 SH    SOLE    405860 0    209410
CONMED Corp.                               COM 207410101  11859  348177 SH    SOLE    193420 0    154757
Consol Energy Inc.                         COM 20854P109   7449  221380 SH    SOLE    137600 0     83780
Constant Contact Inc.                      COM 210313102  21526 1658406 SH    SOLE   1055452 0    602954
Continental Resources Inc. Oklahoma        COM 212015101  92035 1058729 SH    SOLE    721594 0    337135
Cooper Cos.                                COM 216648402 139725 1295191 SH    SOLE    882228 0    412963
Core Laboratories N.V.                     COM N22717107   7234   52448 SH    SOLE     33628 0     18820
Cousins Properties Inc.                    COM 222795106   6546  612318 SH    SOLE    531598 0     80720
Covance Inc.                               COM 222816100 125519 1688906 SH    SOLE   1130816 0    558090
CRA International Inc.                     COM 12618T105   2719  121561 SH    SOLE    105529 0     16032
Crown Castle International Corp.           COM 228227104  42568  611259 SH    SOLE    405015 0    206244
Crown Holdings Inc.                        COM 228368106  22224  534095 SH    SOLE    343494 0    190601
Cymer Inc.                                 COM 232572107   8081   84041 SH    SOLE     52257 0     31784
Cypress Semiconductor Corp.                COM 232806109  16985 1539913 SH    SOLE    988590 0    551323
Cytec Industries Inc.                      COM 232820100  37425  505194 SH    SOLE    341790 0    163404
DaVita HealthCare Partners Inc.            COM 23918K108  28816  242987 SH    SOLE    160210 0     82777
Dendreon Corp.                             COM 24823Q107   5645 1192230 SH    SOLE    661950 0    530280
DexCom Inc.                                COM 252131107  67581 4041943 SH    SOLE   2425703 0   1616240
Dick's Sporting Goods Inc.                 COM 253393102  26424  558650 SH    SOLE    370140 0    188510
Discovery Communications Inc. Series A     COM 25470F104  78371  995316 SH    SOLE    658470 0    336846
Dril-Quip Inc.                             COM 262037104  25830  296312 SH    SOLE    190182 0    106130
DTS Inc.                                   COM 23335C101  13474  810251 SH    SOLE    519866 0    290385
Dunkin' Brands Group Inc.                  COM 265504100  27851  755203 SH    SOLE    498350 0    256853
DXP Enterprises Inc.                       COM 233377407   5370   71884 SH    SOLE     62405 0      9479
Eagle Materials Inc.                       COM 26969P108  74043 1111263 SH    SOLE    743493 0    367770
Edwards Lifesciences Corp.                 COM 28176E108  17934  218287 SH    SOLE    144400 0     73887
Electronic Arts Inc.                       COM 285512109  11516  650640 SH    SOLE    418730 0    231910
Encore Wire Corp.                          COM 292562105  11712  334427 SH    SOLE    261440 0     72987
Endurance Specialty Holdings Ltd.          COM G30397106  51349 1074012 SH    SOLE    721540 0    352472
</TABLE>

<PAGE>

<TABLE>
<S>                                        <C> <C>       <C>    <C>     <C>   <C>    <C>     <C> <C>
Envestnet Inc.                             COM 29404K106  10963  626127 SH    SOLE    348670 0    277457
Everest Re Group Ltd.                      COM G3223R108  21957  169083 SH    SOLE    108173 0     60910
Fairchild Semiconductor International      COM 303726103  41544 2938027 SH    SOLE   2217457 0    720570
FEI Co.                                    COM 30241L109  57074  884182 SH    SOLE    558260 0    325922
Fidelity National Financial Inc.           COM 31620R105 106675 4228109 SH    SOLE   2752740 0   1475369
Fiesta Restaurant Group Inc.               COM 31660B101   7889  296912 SH    SOLE    164190 0    132722
First Community Bancshares Inc             COM 31983A103    169   10675 SH    SOLE     10675 0         0
First Horizon National Corp.               COM 320517105   7996  748658 SH    SOLE    650304 0     98354
First Midwest Bancorp                      COM 320867104   7245  545525 SH    SOLE    473245 0     72280
Flextronics International Ltd.             COM Y2573F102  17602 2603889 SH    SOLE   1675686 0    928203
Fluidigm Corp.                             COM 34385P108   6298  340230 SH    SOLE    188840 0    151390
Flushing Financial Corp.                   COM 343873105   9540  563175 SH    SOLE    489225 0     73950
FMC Corp.                                  COM 302491303 116537 2043426 SH    SOLE   1341178 0    702248
Fortinet Inc.                              COM 34959E109   9151  386450 SH    SOLE    215560 0    170890
Foster Wheeler AG                          COM H27178104  10745  470239 SH    SOLE    302379 0    167860
Furmanite Corp.                            COM 361086101   3424  511791 SH    SOLE    444136 0     67655
Gartner Inc.                               COM 366651107  62957 1157079 SH    SOLE    766010 0    391069
General Motors Co.                         COM 37045V100   1863   66980 SH    SOLE     66980 0         0
Gilead Sciences Inc.                       COM 375558103   4643   94880 SH    SOLE     94880 0         0
Glatfelter                                 COM 377316104   9082  388455 SH    SOLE    337175 0     51280
Global Payments Inc.                       COM 37940X102   7295  146906 SH    SOLE     93847 0     53059
Globe Specialty Metals Inc.                COM 37954N206  33370 2397085 SH    SOLE   1421770 0    975315
Google Inc. Cl A                           COM 38259P508   6145    7738 SH    SOLE      7738 0         0
Green Dot Corp. Cl A                       COM 39304D102   9339  558900 SH    SOLE    358970 0    199930
Green Mountain Coffee Roasters Inc.        COM 393122106   4280   75400 SH    SOLE     75400 0         0
Greenway Medical Technologies Inc.         COM 39679B103  14451  908851 SH    SOLE    504400 0    404451
H&R Block Inc.                             COM 093671105  31876 1083485 SH    SOLE    708300 0    375185
Hanesbrands Inc.                           COM 410345102  15152  332563 SH    SOLE    215790 0    116773
Harley-Davidson Inc.                       COM 412822108  93998 1763561 SH    SOLE   1188240 0    575321
Harman International Industries Inc.       COM 413086109  55788 1250007 SH    SOLE    727363 0    522644
Harsco Corp.                               COM 415864107  21475  866962 SH    SOLE    606002 0    260960
HCC Insurance Holdings Inc.                COM 404132102  24015  571377 SH    SOLE    428374 0    143003
Heartland Payment Systems Inc.             COM 42235N108  26798  812812 SH    SOLE    453890 0    358922
HeartWare International Inc                COM 422368100  11951  135180 SH    SOLE     75230 0     59950
Hertz Global Holdings Inc.                 COM 42805T105  33142 1488840 SH    SOLE    984760 0    504080
HNI Corp.                                  COM 404251100   5119  144234 SH    SOLE    125188 0     19046
Hornbeck Offshore Services Inc.            COM 440543106  36138  777820 SH    SOLE    433210 0    344610
Horsehead Holding Corp.                    COM 440694305   8596  790057 SH    SOLE    508150 0    281907
Hub Group Inc. Cl A                        COM 443320106  64281 1671365 SH    SOLE   1050477 0    620888
Hubbell Inc. Cl B                          COM 443510201  16713  172101 SH    SOLE    110781 0     61320
IHS Inc. Cl A                              COM 451734107  43568  416040 SH    SOLE    288700 0    127340
Illumina Inc.                              COM 452327109  63565 1177572 SH    SOLE    762232 0    415340
IMAX Corp.                                 COM 45245E109 101722 3805538 SH    SOLE   2501640 0   1303898
Incyte Corp.                               COM 45337C102  14879  635580 SH    SOLE    352960 0    282620
Ingram Micro Inc. Shs -A-                  COM 457153104  40133 2039295 SH    SOLE   1243433 0    795862
Insight Enterprises Inc.                   COM 45765U103  21873 1060754 SH    SOLE    859854 0    200900
Insperity Inc.                             COM 45778Q107  34596 1219466 SH    SOLE    679589 0    539877
Insulet Corp.                              COM 45784P101  78206 3024211 SH    SOLE   1822627 0   1201584
Integrated Device Technology Inc.          COM 458118106   5992  802088 SH    SOLE    451988 0    350100
InterMune Inc.                             COM 45884X103   6568  725760 SH    SOLE    467280 0    258480
International Rectifier Corp.              COM 460254105  11447  541214 SH    SOLE    347584 0    193630
International Speedway Corp. Cl A          COM 460335201   3040   93017 SH    SOLE     80557 0     12460
InterOil Corp.                             COM 460951106 123538 1623147 SH    SOLE   1047310 0    575837
</TABLE>

<PAGE>

<TABLE>
<S>                                        <C> <C>       <C>    <C>      <C>   <C>    <C>     <C> <C>
IntraLinks Holdings Inc.                   COM 46118H104   2520   396230 SH    SOLE    254290 0    141940
Intuit Inc.                                COM 461202103  44232   673656 SH    SOLE    446401 0    227255
iShares Barclays TIPS Bond Fund            COM 464287176      0        0 SH    SOLE         0 0         0
Itron Inc.                                 COM 465741106  18939   408163 SH    SOLE    279153 0    129010
J.B. Hunt Transport Services Inc.          COM 445658107   4511    60560 SH    SOLE     60560 0         0
Jabil Circuit Inc.                         COM 466313103  29550  1599021 SH    SOLE   1062554 0    536467
Jack Henry & Associates Inc.               COM 426281101 102069  2208806 SH    SOLE   1367800 0    841006
Jacobs Engineering Group Inc.              COM 469814107   8215   146066 SH    SOLE     94436 0     51630
JetBlue Airways Corp.                      COM 477143101  10155  1471720 SH    SOLE    945790 0    525930
Jones Lang LaSalle Inc.                    COM 48020Q107  31222   314070 SH    SOLE    176480 0    137590
JPMorgan Chase & Co.                       COM 46625H100   3493    73590 SH    SOLE     73590 0         0
K12 Inc.                                   COM 48273U102  63482  2633016 SH    SOLE   1666459 0    966557
Kansas City Southern                       COM 485170302  13932   125629 SH    SOLE     80129 0     45500
KAR Auction Services Inc.                  COM 48238T109  75288  3758739 SH    SOLE   2299150 0   1459589
KiOR Inc. Cl A                             COM 497217109  18765  4035508 SH    SOLE   2370640 0   1664868
Kirby Corp.                                COM 497266106  46270   602472 SH    SOLE    396134 0    206338
Kodiak Oil & Gas Corp.                     COM 50015Q100  53931  5932967 SH    SOLE   3721690 0   2211277
Landstar System Inc.                       COM 515098101  11394   199586 SH    SOLE    128296 0     71290
Lennox International Inc.                  COM 526107107  42955   676564 SH    SOLE    467044 0    209520
Leucadia National Corp.                    COM 527288104  18791   685042 SH    SOLE    439948 0    245094
Lions Gate Entertainment Corp.             COM 535919203  36063  1517185 SH    SOLE    974380 0    542805
Littelfuse Inc.                            COM 537008104   3439    50682 SH    SOLE     43984 0      6698
LKQ Corp                                   COM 501889208  89834  4128391 SH    SOLE   2514766 0   1613625
LPL Financial Holdings Inc                 COM 50212V100   7428   230410 SH    SOLE    149040 0     81370
Magnum Hunter Resources Corp.              COM 55973B102  11141  2778243 SH    SOLE   1786990 0    991253
MAKO Surgical Corp.                        COM 560879108  37823  3392201 SH    SOLE   1981935 0   1410266
Martin Marietta Materials Inc.             COM 573284106  47118   461855 SH    SOLE    303190 0    158665
MasTec Inc.                                COM 576323109 159307  5465075 SH    SOLE   3168701 0   2296374
Maxim Integrated Products Inc.             COM 57772K101  82261  2520243 SH    SOLE   1654288 0    865955
McDermott International Inc.               COM 580037109  15243  1387010 SH    SOLE    892460 0    494550
Medidata Solutions Inc.                    COM 58471A105  22933   395541 SH    SOLE    219467 0    176074
Mednax Inc.                                COM 58502B106 205707  2295064 SH    SOLE   1368851 0    926213
MEMC Electronic Materials Inc.             COM 552715104   4972  1130080 SH    SOLE    727540 0    402540
Meritor Inc.                               COM 59001K100  23633  4996422 SH    SOLE   2943020 0   2053402
MetroPCS Communications Inc.               COM 591708102   8111   744103 SH    SOLE    476653 0    267450
Microsemi Corp.                            COM 595137100  36513  1575882 SH    SOLE    927412 0    648470
Mine Safety Appliances Co.                 COM 602720104  30068   605966 SH    SOLE    361714 0    244252
Modine Manufacturing Co.                   COM 607828100   8067   886430 SH    SOLE    769520 0    116910
Monolithic Power Systems Inc.              COM 609839105  51260  2103426 SH    SOLE   1385376 0    718050
Monro Muffler Brake Inc.                   COM 610236101  23735   597700 SH    SOLE    333110 0    264590
MRC Global Inc.                            COM 55345K103 160302  4867965 SH    SOLE   3126331 0   1741634
Myriad Genetics Inc.                       COM 62855J104  52547  2067981 SH    SOLE   1243670 0    824311
Nanosphere Inc.                            COM 63009F105   4736  2162524 SH    SOLE   1391307 0    771217
National Retail Properties Inc.            COM 637417106   8449   233588 SH    SOLE    202744 0     30844
Navigators Group Inc.                      COM 638904102  10372   176549 SH    SOLE    153249 0     23300
Newell Rubbermaid Inc.                     COM 651229106   8672   332279 SH    SOLE    288626 0     43653
NII Holdings Inc.                          COM 62913F201  56616 13090515 SH    SOLE   8555375 0   4535140
O'Reilly Automotive Inc.                   COM 67103H107  55864   545342 SH    SOLE    361430 0    183912
Oceaneering International Inc.             COM 675232102  34026   512360 SH    SOLE    339070 0    173290
ON Semiconductor Corp.                     COM 682189105  23395  2827220 SH    SOLE   2002009 0    825211
Onyx Pharmaceuticals Inc.                  COM 683399109  87390   983458 SH    SOLE    574990 0    408468
Oracle Corp.                               COM 68389X105   5295   163780 SH    SOLE    163780 0         0
Orbital Sciences Corp.                     COM 685564106  19670  1178546 SH    SOLE    852788 0    325758
</TABLE>

<PAGE>

<TABLE>
<S>                                        <C> <C>       <C>    <C>     <C>   <C>    <C>     <C> <C>
Owens Corning                              COM 690742101    300    7600 SH    SOLE      5090 0      2510
Packaging Corp. of America                 COM 695156109  15493  345282 SH    SOLE    222242 0    123040
Pall Corp.                                 COM 696429307 127278 1861606 SH    SOLE   1123051 0    738555
Pandora Media Inc.                         COM 698354107  12710  897570 SH    SOLE    499890 0    397680
Parkway Properties Inc.                    COM 70159Q104   7181  387123 SH    SOLE    335883 0     51240
PBF Energy Inc.                            COM 69318G106   2393   64390 SH    SOLE     64390 0         0
PEACE MARK HLDGS                           COM 643377906      0  464000 SH    SOLE    464000 0         0
Pentair Ltd.                               COM H6169Q108   5893  111715 SH    SOLE     72945 0     38770
Pericom Semiconductor Corp.                COM 713831105   5123  752250 SH    SOLE    652945 0     99305
PerkinElmer Inc.                           COM 714046109  20806  618500 SH    SOLE    343240 0    275260
Perrigo Co.                                COM 714290103   5151   43378 SH    SOLE     27578 0     15800
Pfizer Inc.                                COM 717081103   5478  189820 SH    SOLE    189820 0         0
Piedmont Natural Gas Co.                   COM 720186105   2665   81053 SH    SOLE     70317 0     10736
Pinnacle Financial Partners Inc.           COM 72346Q104   8123  347741 SH    SOLE    301694 0     46047
Popular Inc.                               COM 733174700  36420 1319577 SH    SOLE    962343 0    357234
Portland General Electric Co.              COM 736508847   9213  303757 SH    SOLE    263564 0     40193
Premiere Global Services Inc.              COM 740585104  45014 4095938 SH    SOLE   2457064 0   1638874
Primoris Services Corp.                    COM 74164F103  35135 1589101 SH    SOLE    981255 0    607846
PVH Corp.                                  COM 693656100  35000  327680 SH    SOLE    217110 0    110570
Qiagen N.V.                                COM N72482107  10141  481080 SH    SOLE    309390 0    171690
QUALCOMM Inc.                              COM 747525103   4537   67775 SH    SOLE     67775 0         0
Quanta Services Inc.                       COM 74762E102 151586 5303918 SH    SOLE   3357505 0   1946413
Quiksilver Inc.                            COM 74838C106   2895  476903 SH    SOLE    413993 0     62910
QuinStreet Inc.                            COM 74874Q100  24761 4147630 SH    SOLE   2430040 0   1717590
Raymond James Financial Inc.               COM 754730109 239738 5200385 SH    SOLE   3192897 0   2007488
Renasant Corp.                             COM 75970E107   8780  392301 SH    SOLE    340600 0     51701
Responsys Inc.                             COM 761248103   9248 1044940 SH    SOLE    673270 0    371670
Rex Energy Corp.                           COM 761565100  15553  943180 SH    SOLE    604960 0    338220
Ritchie Bros. Auctioneers Inc.             COM 767744105   5168  238139 SH    SOLE    153021 0     85118
Rogers Corp.                               COM 775133101  53354 1120422 SH    SOLE    709622 0    410800
Rovi Corp.                                 COM 779376102  55522 2593288 SH    SOLE   1844007 0    749281
RPX Corp.                                  COM 74972G103  47916 3395908 SH    SOLE   2031030 0   1364878
RTI International Metals Inc.              COM 74973W107  14672  462975 SH    SOLE    254524 0    208451
Rue21 Inc.                                 COM 781295100  37829 1287142 SH    SOLE    793955 0    493187
Saia Inc.                                  COM 78709Y105  11108  307112 SH    SOLE    266496 0     40616
SBA Communications Corp.                   COM 78388J106  24341  338071 SH    SOLE    236580 0    101491
Seattle Genetics Inc.                      COM 812578102  39165 1103098 SH    SOLE    697180 0    405918
Select Comfort Corp.                       COM 81616X103  54386 2750912 SH    SOLE   1680190 0   1070722
Selective Insurance Group Inc.             COM 816300107  12661  527302 SH    SOLE    457782 0     69520
Sherwin-Williams Co.                       COM 824348106  52420  310380 SH    SOLE    205660 0    104720
Shire PLC ADR                              COM 82481R106   2891   31640 SH    SOLE     31640 0         0
Signature Bank                             COM 82669G104  74442  945169 SH    SOLE    568350 0    376819
Silicon Laboratories Inc.                  COM 826919102   7949  192180 SH    SOLE    123810 0     68370
Sirius XM Radio Inc.                       COM 82967N108  30052 9757240 SH    SOLE   6456070 0   3301170
Sirona Dental Systems Inc.                 COM 82966C103 165654 2246769 SH    SOLE   1432240 0    814529
Skyworks Solutions Inc.                    COM 83088M102  11767  534270 SH    SOLE    343680 0    190590
SM Energy Co.                              COM 78454L100   7234  122150 SH    SOLE    106067 0     16083
Snap-On Inc.                               COM 833034101   6547   79167 SH    SOLE     68772 0     10395
Sotheby's                                  COM 835898107   4374  116910 SH    SOLE     75320 0     41590
Southwest Gas Corp.                        COM 844895102   5157  108655 SH    SOLE     94280 0     14375
Starwood Hotels & Resorts Worldwide In     COM 85590A401  56611  888294 SH    SOLE    589680 0    298614
Steven Madden Ltd.                         COM 556269108  38034  879845 SH    SOLE    606865 0    272980
Symmetry Medical Inc.                      COM 871546206  19265 1682561 SH    SOLE   1236547 0    446014
</TABLE>

<PAGE>

<TABLE>
<S>                                        <C> <C>       <C>    <C>     <C>   <C>    <C>     <C> <C>
Synaptics Inc.                             COM 87157D109  40043  984108 SH    SOLE    577430 0    406678
Synchronoss Technologies Inc.              COM 87157B103  25572  824120 SH    SOLE    459570 0    364550
Syneron Medical Ltd.                       COM M87245102  14221 1391528 SH    SOLE    894538 0    496990
T. Rowe Price Group Inc.                   COM 74144T108  73382  980126 SH    SOLE    648700 0    331426
Tenneco Inc.                               COM 880349105   4902  124710 SH    SOLE     80620 0     44090
Teradata Corp.                             COM 88076W103  30951  528978 SH    SOLE    350410 0    178568
Tessera Technologies Inc.                  COM 88164L100  70289 3748730 SH    SOLE   2112988 0   1635742
Teva Pharmaceutical Industries Ltd. AD     COM 881624209   3753   94580 SH    SOLE     94580 0         0
Texas Capital Bancshares Inc.              COM 88224Q107   3292   81387 SH    SOLE     70627 0     10760
Tidewater Inc.                             COM 886423102   4014   79484 SH    SOLE     68984 0     10500
Tiffany & Co.                              COM 886547108  27230  391580 SH    SOLE    259050 0    132530
Tilly's Inc Cl A                           COM 886885102  10815  850242 SH    SOLE    474030 0    376212
TiVo Inc.                                  COM 888706108  19721 1591666 SH    SOLE   1022766 0    568900
TJX Cos.                                   COM 872540109   7177  153520 SH    SOLE    153520 0         0
Tractor Supply Co.                         COM 892356106  13879  133288 SH    SOLE     74220 0     59068
Trex Co. Inc.                              COM 89531P105  10832  220250 SH    SOLE    143080 0     77170
TriQuint Semiconductor Inc.                COM 89674K103  11363 2245676 SH    SOLE   1584229 0    661447
Tronox Ltd                                 COM Q9235V101  14184  716005 SH    SOLE    460980 0    255025
Trulia Inc.                                COM 897888103   1714   54610 SH    SOLE     30330 0     24280
TRW Automotive Holdings Corp.              COM 87264S106  33764  613890 SH    SOLE    399960 0    213930
Ultratech Inc.                             COM 904034105  23586  596660 SH    SOLE    383290 0    213370
Unilife Corp.                              COM 90478E103  16702 7661574 SH    SOLE   4552880 0   3108694
United Continental Holdings Inc.           COM 910047109 185106 5782740 SH    SOLE   3712980 0   2069760
United Parcel Service Inc. Cl B            COM 911312106   7031   81850 SH    SOLE     81850 0         0
United Therapeutics Corp.                  COM 91307C102  33793  555170 SH    SOLE    341880 0    213290
UnitedHealth Group Inc.                    COM 91324P102   4256   74400 SH    SOLE     74400 0         0
Unitil Corp.                               COM 913259107   5506  195730 SH    SOLE    169860 0     25870
Universal Display Corp.                    COM 91347P105   2113   71810 SH    SOLE     46150 0     25660
Urban Outfitters Inc.                      COM 917047102  22912  591426 SH    SOLE    391460 0    199966
US Airways Group Inc.                      COM 90341W108   8238  485433 SH    SOLE    312300 0    173133
UTi Worldwide Inc.                         COM G87210103  32974 2277184 SH    SOLE   1609554 0    667630
Vera Bradley Inc.                          COM 92335C106  29971 1268360 SH    SOLE    842460 0    425900
VeriFone Systems Inc.                      COM 92342Y109   7950  384420 SH    SOLE    246250 0    138170
Verint Systems Inc.                        COM 92343X100   7774  212695 SH    SOLE    118602 0     94093
VeriSign Inc.                              COM 92343E102   9175  194090 SH    SOLE    125410 0     68680
Verisk Analytics Inc. Cl A                 COM 92345Y106  39096  634476 SH    SOLE    419820 0    214656
VF Corp.                                   COM 918204108  49609  295732 SH    SOLE    196041 0     99691
Virtusa Corp                               COM 92827P102  44460 1871203 SH    SOLE   1124388 0    746815
W.R. Berkley Corp.                         COM 084423102  71370 1608528 SH    SOLE    926768 0    681760
Wabash National Corp.                      COM 929566107  34828 3427970 SH    SOLE   2336240 0   1091730
WABCO Holdings Inc.                        COM 92927K102  87281 1236443 SH    SOLE    734435 0    502008
Waddell & Reed Financial Inc. Cl A         COM 930059100  70335 1606548 SH    SOLE    920768 0    685780
Washington Federal Inc.                    COM 938824109   6112  349263 SH    SOLE    303173 0     46090
Waste Connections Inc.                     COM 941053100   6464  179651 SH    SOLE    100227 0     79424
Watsco Inc.                                COM 942622200  91368 1085385 SH    SOLE    632158 0    453227
Web.com Group Inc.                         COM 94733A104  32312 1891805 SH    SOLE   1086592 0    805213
Wesco International Inc.                   COM 95082P105 146131 2012553 SH    SOLE   1250805 0    761748
Westar Energy Inc.                         COM 95709T100  10660  321275 SH    SOLE    278880 0     42395
Western Digital Corp.                      COM 958102105  16274  323598 SH    SOLE    207934 0    115664
WEX Inc.                                   COM 96208T104  84981 1082560 SH    SOLE    675680 0    406880
World Fuel Services Corp.                  COM 981475106  82884 2086716 SH    SOLE   1212949 0    873767
WSFS Financial Corp.                       COM 929328102   8332  171294 SH    SOLE    148748 0     22546
Wyndham Worldwide Corp.                    COM 98310W108  66645 1033580 SH    SOLE    684350 0    349230
Xilinx Inc.                                COM 983919101  14148  370650 SH    SOLE    310460 0     60190
LINE TOTAL 317
</TABLE>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>