13F-HR 1 a2172639z13f-hr.txt FORM 13F UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: June 30, 2006 -------------- 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: Portolan Capital Management, LLC ------------------------------- Address: Two International Place ------------------------------- Boston, MA 02110 ------------------------------- Form 13F File Number: 28-11602 --------------------- 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: Nancy Bonner ------------------------------- Title: Chief Compliance Officer ------------------------------- Phone: 617-753-6400 ------------------------------- Signature, Place, and Date of Signing: /s/ Nancy Bonner Boston, MA 8/14/06 ------------------------------- ----------------- ------------- [Signature] [City, State] [Date] Report Type (Check only one.): /X/ 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) / / 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) / / 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) List of Other Managers Reporting for this Manager: [If there are no entries in this list, omit this section.] Form 13F File Number Name 28- --------------- ------------------------------------ [Repeat as necessary.] FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 -------------------- Form 13F Information Table Entry Total: 207 -------------------- Form 13F Information Table Value Total: $243,489 -------------------- (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. NONE.
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ---------------------- ------------- --------- -------- ---------------------- ------------ ---------- ---------------------- VOTING AUTHORITY TITLE OF VALUE SHARES OF SHARE/ PUT/ INVESTMENT OTHER ----------------------- NAME OF ISSUER CLASS CUSIP (X1000) PRN AMOUNT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE ----------------------- ------------- --------- -------- ---------- ------ ------ ------------ ---------- --------- ------ ------ 24/7 REAL MEDIA INC CMN COM 901314203 2,151 244,982 SH Sole 244,982 3 D SYSTEMS CORP (NEW) CMN COM 88554D205 409 20,344 SH Sole 20,344 51JOB, INC. ADR CMN COM 316827104 551 25,338 SH Sole 25,338 ABERCROMBIE & FITCH CO. CLASS A COMMON STOCK COM 002896207 544 9,822 SH Sole 9,822 AC MOORE ARTS & CRAFTS INC CMN COM 00086T103 434 26,581 SH Sole 26,581 ACTIVIDENTITY CORP CMN COM 00506P103 138 30,350 SH Sole 30,350 ACUSPHERE, INC. CMN COM 00511R870 698 203,406 SH Sole 203,406 AFLAC INCORPORATED CMN COM 001055102 604 13,041 SH Sole 13,041 AGERE SYS INC CMN COM 00845V308 2,448 166,535 SH Sole 166,535 ALIGN TECHNOLOGY INC CMN COM 016255101 678 91,720 SH Sole 91,720 ALTRIA GROUP INC CMN COM 02209S103 2,782 37,883 SH Sole 37,883 AMERICAN SUPERCONDUCTOR CORP CMN COM 030111108 1,409 159,585 SH Sole 159,585 AMICAS INC CMN COM 001712108 748 231,684 SH Sole 231,684 ANALOGIC CORP (NEW) CMN COM 032657207 1,922 41,230 SH Sole 41,230 AON CORPORATION CMN COM 037389103 564 16,202 SH Sole 16,202 ARACRUZ CELULOSE S.A. SPONS ADR REPSTG CL-B SHS COM 038496204 614 11,715 SH Sole 11,715 ARCH COAL INC CMN COM 039380100 660 15,576 SH Sole 15,576 ARIBA INC CMN COM 04033V203 1,861 226,112 SH Sole 226,112 ARMOR HOLDINGS INC CMN COM 042260109 2,760 50,345 SH Sole 50,345 ATHEROS COMMUNICATIONS INC CMN COM 04743P108 1,168 61,315 SH Sole 61,315 AVID TECHNOLOGY INC CMN COM 05367P100 357 10,707 SH Sole 10,707 BAKER HUGHES INC CMN COM 057224107 435 5,317 SH Sole 5,317 BANCO ITAU HOLDING FINANCEIR ADR PFD COM 059602201 1,045 35,843 SH Sole 35,843 BARCLAYS PLC ORD 25P CMN COM 9EQ06BM25 1,798 158,357 SH Sole 158,357 BENIHANA INC CL-A (NEW) CMN CLASS A COM 082047200 1,034 38,101 SH Sole 38,101 BIOSPHERE MEDICAL INC CMN COM 09066V103 2,862 450,725 SH Sole 450,725 BRUSH ENGINEERED MATLS INC CMN COM 117421107 2,502 119,990 SH Sole 119,990 BUCYRUS INTERNATIONAL INC CMN CLASS A COM 118759109 240 4,762 SH Sole 4,762 BUNGE LIMITED. ORD CMN COM G16962105 368 7,315 SH Sole 7,315 CANADIAN NATURAL RESOURCES CMN COM 136385101 24 432 SH Sole 432 CARNIVAL CORPORATION CMN COM 143658300 669 16,037 SH Sole 16,037 CASELLA WASTE SYSTEMS INC CLASS A COM 147448104 287 21,938 SH Sole 21,938 CAVALIER HOMES INC CMN COM 149507105 884 166,784 SH Sole 166,784 CDC CORPORATION CMN CLASS A COM G2022L106 2,211 502,427 SH Sole 502,427 CENTENE CORPORATION CMN COM 15135B101 721 30,630 SH Sole 30,630 CENTRAL EURO DISTRIBUTION CORPORATION COM 153435102 128 5,077 SH Sole 5,077 CEPHALON INC CMN COM 156708109 963 16,018 SH Sole 16,018 CHEMED CORP CMN COM 16359R103 2,745 50,345 SH Sole 50,345 CHESAPEAKE ENERGY CORPORATION CMN COM 165167107 51 1,676 SH Sole 1,676 CHICAGO BRIDGE & IRON CO N V ADR CMN COM 167250109 1,408 58,308 SH Sole 58,308 CIA SIDERURGICA NACIONAL SPON ADR REPSTG ORD SHS COM 20440W105 2,082 64,645 SH Sole 64,645 CITIZENS COMMUNICATIONS CO CMN COM 17453B101 2,293 175,671 SH Sole 175,671 CLARCOR INC CMN COM 179895107 1,551 52,056 SH Sole 52,056 COCA COLA HELLENIC BOTTLING COMPANY S.A EUR 3 COM 421991100 1,113 37,368 SH Sole 37,368 COCA-COLA HELLENIC BOTTLING CO*MPANY SA SPONSORED ADR CMN COM 1912EP104 465 15,399 SH Sole 15,399 COGENT COMMUNICATIONS GROUP IN*C CMN COM 19239V302 882 94,134 SH Sole 94,134 COLLEGIATE PACIFIC INC CMN COM 194589206 580 53,987 SH Sole 53,987 COMPANHIA VALE DO RIO DOCE SPONSORED ADR CMN COM 204412209 2,560 106,478 SH Sole 106,478 COMPUTER PROGRAMS & SYSTEMS CMN COM 205306103 709 17,734 SH Sole 17,734 CONCEPTUS INC CMN COM 206016107 1,706 125,078 SH Sole 125,078 CONSOL ENERGY INC. CMN COM 20854P109 277 5,924 SH Sole 5,924 CORE LABORATORIES N.V. CMN COM N22717107 614 10,054 SH Sole 10,054 CROWN HOLDINGS INC CMN COM 228368106 1,702 109,307 SH Sole 109,307 CUBIST PHARMACEUTICALS INC CMN COM 229678107 961 38,163 SH Sole 38,163 DOMINION RESOURCES, INC. CMN COM 25746U109 368 4,925 SH Sole 4,925 DURECT CORP CMN COM 266605104 1,102 284,641 SH Sole 284,641 ENGLOBAL CORP CMNul] COM 293306106 2,094 268,855 SH Sole 268,855 ENSCO INTERNATIONAL INC CMN COM 26874Q100 30 647 SH Sole 647 EURONET WORLDWIDE INC CMN COM 298736109 1,699 44,282 SH Sole 44,282 FEDERAL AGRICULTURAL MORTGAGE CORP CL-C COM 313148306 1,926 69,537 SH Sole 69,537 FINLAY ENTERPRISES, INC. CMN COM 317884203 548 64,425 SH Sole 64,425 FIRST CASH FINANCIAL SERVICE INC COM 31942D107 651 32,942 SH Sole 32,942 FLIR SYSTEMS INC CMN COM 302445101 2,178 95,092 SH Sole 95,092 FOSSIL INC CMN COM 349882100 879 48,788 SH Sole 48,788 FOUNDATION COAL HOLDINGS, INC. CMN COM 35039W100 101 2,150 SH Sole 2,150 FREEPORT-MCMORAN COPPER & GOLD CMN CLASS B COM 35671D857 2,606 47,039 SH Sole 47,039 GENESEE & WYOMING INC CMN CLASS A COM 371559105 422 11,904 SH Sole 11,904 GERDAU SA SPON ADR SPONSORED ADR PFD COM 373737105 256 17,174 SH Sole 17,174 GIBRALTAR INDUSTRIES INC CMN COM 374689107 142 4,893 SH Sole 4,893 GLOBIX CORPORATION CMN COM 37957F200 1,196 240,660 SH Sole 240,660 GPC BIOTECH AG CMN COM 362990079 534 37,574 SH Sole 37,574 GUESS ?, INC. CMN COM 401617105 619 14,820 SH Sole 14,820 GUITAR CENTER, INC. CMN COM 402040109 514 11,568 SH Sole 11,568 HALLIBURTON COMPANY CMN COM 406216101 1,207 16,259 SH Sole 16,259 HARRIS INTERACTIVE INC CMN COM 414549105 1,949 341,953 SH Sole 341,953 HESS CORPORATION CMN COM 42809H107 3,273 61,929 SH Sole 61,929 HITTITE MICROWAVE CORPORATION CMN COM 43365Y104 803 22,215 SH Sole 22,215 HMS HLDGS CORP CMN COM 40425J101 4,390 409,549 SH Sole 409,549 IAC/INTERACTIVECORP CMN COM 44919P300 632 23,844 SH Sole 23,844 ICON PLC INC ADS (1 ADS=1 ORD) COM 45103T107 697 12,610 SH Sole 12,610 INDUS INTERNATIONAL INC CMN COM 45578L100 2,687 939,591 SH Sole 939,591 INFOCROSSING INC CMN COM 45664X109 2,834 245,404 SH Sole 245,404 INFRASOURCE SERVICES, INC. CMN COM 45684P102 18 993 SH Sole 993 INGERSOLL-RAND COMPANY CMN CLASS A COM G4776G101 1,465 34,256 SH Sole 34,256 INTERACTIVE DATA CORPORATION CMN COM 45840J107 2,145 106,779 SH Sole 106,779 INTERNAP NETWORK SERVICES CMN COM 45885A102 3,363 3,202,718 SH Sole 3,202,718 INTL BUSINESS MACHINES CORP CMN COM 459200101 849 11,047 SH Sole 11,047 INVERNESS MED INNOVATIONS INC CMN COM 46126P106 2,078 73,614 SH Sole 73,614 ITURAN LOCATION & CONTROL LTD CMN COM M6158M104 763 54,427 SH Sole 54,427 J2 GLOBAL COMMUNICATIONS INC CMN COM 46626E205 468 14,990 SH Sole 14,990 JACK IN THE BOX INC CMN COM 466367109 922 23,524 SH Sole 23,524 JOY GLOBAL INC CMN COM 481165108 197 3,781 SH Sole 3,781 KEYNOTE SYSTEMS INC CMN COM 493308100 682 66,151 SH Sole 66,151 KEYSTONE AUTOMOTIVE INDS INC CMN COM 49338N109 3,997 94,678 SH Sole 94,678 KVH INDUSTRIES INC CMN COM 482738101 1,467 125,778 SH Sole 125,778 KYPHON, INC. CMN COM 501577100 560 14,601 SH Sole 14,601 LAMSON & SESSION CO. CMN COM 513696104 2,165 76,355 SH Sole 76,355 LESCO INC CMN COM 526872106 454 29,242 SH Sole 29,242 LIONBRIDGE TECHNOLOGIES INC CMN COM 536252109 1,410 255,049 SH Sole 255,049 LKQ CORPORATION CMN COM 501889208 982 51,693 SH Sole 51,693 LLOYDS TSB GROUP PLC ORD 25P COM 872990171 140 14,209 SH Sole 14,209 LO JACK CORP CMN COM 539451104 1,338 70,957 SH Sole 70,957 LOEWS CORPORATION CMN CAROLINA GROUP STOCK COM 540424207 1,101 21,431 SH Sole 21,431 MANITOWOC CO INC CMN COM 563571108 109 2,452 SH Sole 2,452 MANNKIND CORPORATION CMN COM 56400P201 386 18,109 SH Sole 18,109
VOTING AUTHORITY TITLE OF VALUE SHARES OF SHARE/ PUT/ INVESTMENT OTHER ----------------------- NAME OF ISSUER CLASS CUSIP (X1000) PRN AMOUNT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE ----------------------- -------------- --------- -------- ---------- ------ ------ ------------ ---------- --------- ------ ------ MARINEMAX INC CMN COM 567908108 1,435 54,726 SH Sole 54,726 MATRIX SERVICE COMPANY CMN COM 576853105 777 67,891 SH Sole 67,891 MAVERICK TUBE CORP. CMN COM 577914104 519 8,218 SH Sole 8,218 MCAFEE INC CMN COM 579064106 390 16,087 SH Sole 16,087 MCDERMOTT INTL CMN COM 580037109 31 671 SH Sole 671 METTLER-TOLEDO INTL CMN COM 592688105 463 7,643 SH Sole 7,643 MICROSOFT CORPORATION CMN COM 594918104 732 31,403 SH Sole 31,403 MIVA INC CMN CLASS COM 55311R108 1,108 273,615 SH Sole 273,615 MOBILITY ELECTRONICS INC CMN COM 60741U101 452 62,203 SH Sole 62,203 MODTECH HOLDINGS INC CMN COM 60783C100 718 106,088 SH Sole 106,088 MOLDFLOW CORP CMN COM 608507109 2,923 249,602 SH Sole 249,602 MONSANTO COMPANY CMN COM 61166W101 2,792 33,163 SH Sole 33,163 MPOWER HOLDING CORPORATION CMN COM 62473L309 150 80,283 SH Sole 80,283 MYLAN LABS INC CMN COM 628530107 1,653 82,652 SH Sole 82,652 MYRIAD GENETICS INC CMN COM 62855J104 683 27,032 SH Sole 27,032 NEOPHARM INC CMN COM 640919106 198 37,150 SH Sole 37,150 NIGHTHAWK RADIOLOGY HLDGS INC CMN COM 65411N105 1,281 71,382 SH Sole 71,382 NII HOLDINGS, INC. CMN CLASS B COM 62913F201 1,177 20,882 SH Sole 20,882 NMS COMMUNICATIONS CORP CMN COM 629248105 2,755 760,917 SH Sole 760,917 NOBLE CORPORATION CMN COM G65422100 446 5,989 SH Sole 5,989 NYMAGIC INC CMN COM 629484106 675 23,222 SH Sole 23,222 OCCIDENTAL PETROLEUM CORP CMN COM 674599105 2,617 25,523 SH Sole 25,523 ODYSSEY HEALTHCARE INC CMN COM 67611V101 453 25,799 SH Sole 25,799 OPEN JT STK CO-VIMPEL COMMUNIC SPONSORED ADR CMN COM 68370R109 955 20,837 SH Sole 20,837 OPEN SOLUTIONS INC CMN COM 68371P102 73 2,762 SH Sole 2,762 OPENWAVE SYSTEMS INC CMN COM 683718308 1,338 115,943 SH Sole 115,943 ORBITAL SCIENCES CORP CMN COM 685564106 612 37,913 SH Sole 37,913 OREGON STEEL MILLS INC CMN COM 686079104 728 14,376 SH Sole 14,376 ORTHOFIX INTERNATIONAL CMN COM N6748L102 251 6,586 SH Sole 6,586 ORTHOVITA INC CMN COM 68750U102 710 168,152 SH Sole 168,152 OWENS-ILLINOIS INC CMN COM 690768403 318 18,978 SH Sole 18,978 PAIN THERAPEUTICS INC CMN COM 69562K100 283 33,917 SH Sole 33,917 PATNI COMPUTERS SYSTEMS LTD SPONSORED ADR CMN COM 703248203 366 25,633 SH Sole 25,633 PEABODY ENERGY CORP CMN COM 704549104 498 8,928 SH Sole 8,928 PERFORMANCE TECHNOLOGIES INC CMN COM 71376K102 1,090 158,025 SH Sole 158,025 PER-SE TECHNOLOGIES INC CMN COM 713569309 876 34,790 SH Sole 34,790 PETROLEO BRASILEIRO SA PETROBRAS PETR SPONSORED ADR CMN COM 71654V408 2,424 27,144 SH Sole 27,144 PETSMART, INC. CMN COM 716768106 2,011 78,563 SH Sole 78,563 PHELPS DODGE CORP CMN COM 717265102 1,716 20,884 SH Sole 20,884 POLYCOM INC CMN COM 73172K104 1,807 82,446 SH Sole 82,446 POLYMEDICA CORP CMN COM 731738100 1,175 32,679 SH Sole 32,679 PORTEC RAIL PRODUCTS, INC. CMN COM 736212101 1,305 92,989 SH Sole 92,989 POWELL INDS INC CMN COM 739128106 1,021 42,678 SH Sole 42,678 PROVIDENCE SERVICE CORPORATION CMN COM 743815102 863 31,696 SH Sole 31,696 PSYCHEMEDICS CORPORATION CMN COM 744375205 1,738 98,988 SH Sole 98,988 RADVISION LTD CMN COM M81869105 565 35,454 SH Sole 35,454 RAINMAKER SYSTEMS CMN COM 750875304 2,904 535,848 SH Sole 535,848 REGENERATION TECH INC DEL CMN COM 75886N100 800 125,007 SH Sole 125,007 RESEARCH IN MOTION CMN COM 760975102 3,103 44,469 SH Sole 44,469 REX STORES CORP CMN COM 761624105 1,882 131,142 SH Sole 131,142 RITCHIE BROS. AUCTIONEERS INC CMN COM 767744105 14 257 SH Sole 257 ROYAL BANK OF SCOTLAND GROUP ORD 25P COM 780990123 1,088 33,118 SH Sole 33,118 SALIX PHARMACEUTICALS, LTD. CMN COM 795435106 975 79,260 SH Sole 79,260 SAPIENT CORP. CMN COM 803062108 537 101,286 SH Sole 101,286 SAPPI LTD SPONS ADR SPONSORED ADR CMN COM 803069202 23 1,861 SH Sole 1,861 SATYAM COMPUTER SERVICES ADR CMN COM 804098101 634 19,143 SH Sole 19,143 SAVVIS INC. CMN COM 805423308 4,860 164,119 SH Sole 164,119 SCHLUMBERGER LTD CMN COM 806857108 744 11,422 SH Sole 11,422 SCHNITZER STEEL INDUSTRIES,INC CLASS A COM 806882106 27 753 SH Sole 753 SENOMYX, INC. CMN COM 81724Q107 2,112 146,330 SH Sole 146,330 SIFY LIMITED SPONSORED ADR CMN COM 82655M107 688 68,892 SH Sole 68,892 SIRENZA MICRODEVICES INC CMN COM 82966T106 230 18,969 SH Sole 18,969 SITEL CORP CMN COM 82980K107 22 5,625 SH Sole 5,625 SKILLSOFT PUBLIC LIMITED CO SPONSORED ADR CMN COM 830928107 1,482 242,179 SH Sole 242,179 SOMANETICS CORP (NEW) CMN COM 834445405 1,027 53,794 SH Sole 53,794 SOTHEBYS HLDGS CL-A LTD VOTING CMN CLASS A COM 835898107 1,892 72,061 SH Sole 72,061 SOUTHERN UNION CO (NEW) CMN COM 844030106 987 36,486 SH Sole 36,486 SPECTRALINK CORP CMN COM 847580107 4,550 515,824 SH Sole 515,824 STAGE STORES INC CMN COM 85254C305 1,317 39,923 SH Sole 39,923 SUNRISE SENIOR LIVING INC CMN COM 86768K106 1,557 56,302 SH Sole 56,302 SYNGENTA AG SPONSORED ADR CMN COM 87160A100 1,171 44,099 SH Sole 44,099 TALK AMERICA HLDGS INC CMN COM 87426R202 2,729 440,801 SH Sole 440,801 TAM S.A. ADR CMN COM 87484D103 1,012 37,213 SH Sole 37,213 TEAM INC CMN COM 878155100 650 25,929 SH Sole 25,929 TEMPUR-PEDIC INTL INC. CMN COM 88023U101 693 51,330 SH Sole 51,330 TESSERA TECHNOLOGIES, INC. CMN COM 88164L100 3,524 128,152 SH Sole 128,152 TEVA PHARMACEUTICAL IND LTD ADS COM 881624209 1,072 33,935 SH Sole 33,935 THE STEAK N SHAKE CO CMN COM 857873103 316 20,880 SH Sole 20,880 THERAVANCE, INC. CMN COM 88338T104 359 15,693 SH Sole 15,693 THORATEC CORPORATION CMN COM 885175307 4,053 292,180 SH Sole 292,180 TIFFANY & CO CMN COM 886547108 1,185 35,900 SH Sole 35,900 TIM PARTICIPACOES SA SPONSORED ADR LNKD TO PFD STK COM 88706P106 1,687 61,233 SH Sole 61,233 TRINITY BIOTECH PLC SPONSORED ADR CMN COM 896438306 378 50,000 SH Sole 50,000 TRINITY INDUSTRIES INC (DEL) CMN COM 896522109 155 3,825 SH Sole 3,825 TUESDAY MORNING CORP CMN COM 899035505 1,356 103,127 SH Sole 103,127 TWEETER HOME ENTERTAINMENT GP CMN COM 901167106 3,670 516,890 SH Sole 516,890 UNIBANCO UNIAO DE BANCOS BRASILEIROS S.A. GDR COM 90458E107 286 4,302 SH Sole 4,302 UNITED ONLINE INC CMN COM 911268100 894 74,472 SH Sole 74,472 UNIVERSAL COMPRESSION HLDGS CMN COM 913431102 122 1,940 SH Sole 1,940 URBAN OUTFITTERS INC CMN COM 917047102 540 30,872 SH Sole 30,872 UST INC CMN COM 902911106 1,020 22,581 SH Sole 22,581 VALUECLICK INC ORD CMN COM 92046N102 1,391 90,643 SH Sole 90,643 VARSITY GROUP INC. CMN COM 922281100 613 150,170 SH Sole 150,170 VCA ANTECH, INC. CMN COM 918194101 762 23,872 SH Sole 23,872 VERIZON COMMUNICATIONS CMN COM 92343V104 1,097 32,751 SH Sole 32,751 VOTORANTIM CELULOSE E PAPEL ADR COM 92906P106 1,051 67,469 SH Sole 67,469 WALTER INDS INC (NEW) CMN COM 93317Q105 1,603 27,806 SH Sole 27,806 WASTE CONNECTIONS INC CMN COM 941053100 336 9,220 SH Sole 9,220 WIDERTHAN CO LTD SPONSORED ADR CMN COM 967593104 375 36,397 SH Sole 36,397 WITNESS SYS INC CMN COM 977424100 2,856 141,575 SH Sole 141,575 YAHOO! INC CMN COM 984332106 1,067 32,345 SH Sole 32,345 ZOLTEK COS INC CMN COM 98975W104 94 3,146 SH Sole 3,146