13F-HR 1 jdn13f-q205.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: June 30, 2005 ----------------- 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: JDN Capital Management -------------------------- Address: 2420 Camino Ramon Suite 222 -------------------------- San Ramon, CA 94583 -------------------------- -------------------------- Form 13F File Number: 28- 11131 --------------------- The institutional investment manager filing this report and 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, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: John Nguyen ---------------------------- Title: General Partner ---------------------------- Phone: 925-244-5990 ---------------------------- Signature, Place, and Date of Signing /s/ John Nguyen San Ramon, CA Aug 12, 2005 --------------------- ------------------------- ------------ [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 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 managers (s).) FORM13F SUMMARY Report Summary: Number of Other Included Managers: 0 ----------------- Form 13F Information Table Entry Total: 133 ----------------- Form 13F Information Table Value Total: 88,647 ----------------- (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. [If there are no entries in this list, state "NONE" and omit the column headings and list entries.] NONE

column 1 column 2 column 3 column 4 column 5 column 6 column 7 column 8 -------- -------- -------- -------- -------- ---------- -------- -------- ------------------------------------------------------------------------------------------------------------------------------------ Investment Other Voting Authority Name of Issuer Title of Cusip Value Shrs or sh/ put/ Discretion Managers Sole Shared None Class (x$1000) prn amt prn call ------------------ ------- ------- -------- ------- --- ---- ---------- -------- ---- ---- ---- AVX Corp com 002444107 ~~706~~679 56000 SH SOLE 56000 0 0 ~~Accredo Health Inc com 00437V104 416 15000 SH SOLE 15000 0 0~~ Adaptec Inc com 00651F108 ~~787~~47 ~~103700~~12119 SH SOLE ~~103700~~12119 0 0 Advanced Digital Information com 007525108 ~~303~~1490 ~~30237~~195988 SH SOLE ~~30237~~195988 0 0 Aeroflex Inc com 007768104 ~~1267~~1455 ~~104559~~173176 SH SOLE ~~104559~~173176 0 0 ~~Agrium~~Amicas Inc com ~~008916108~~001712108 ~~435~~1282 ~~25800~~283024 SH SOLE ~~25800~~283024 0 0 Andrew Corp com 034425108 ~~995~~991 ~~73000~~77700 SH SOLE ~~73000~~77700 0 0 Apac Customer Services Inc com 00185E106 57100 ~~32990~~124721 SH SOLE ~~32990~~124721 0 0 ~~Ascential~~Applied ~~Software~~Micro Circuits Corp com ~~new~~03822W109 ~~04362P207~~465 ~~1199~~181690 ~~73500~~ SH SOLE ~~73500~~181690 0 0 Avid Technolgy Inc com 05367P100 ~~648~~559 10500 SH SOLE 10500 0 0 Avnet Inc com 053807103 ~~1404~~1755 ~~76992~~77892 SH SOLE ~~76992~~77892 0 0 ~~Axcelis~~Bisys ~~Technologies~~Group ~~com 054540109 211 26000 SH SOLE 26000 0 0 BMC Software com 055921100 335 18000 SH SOLE 18000 0 0 Bed Bath & Beyond~~ Inc com ~~075896100~~055472104 ~~299~~792 ~~7500~~53000 SH SOLE ~~7500~~53000 0 0 ~~Bisys~~Borland ~~Group~~Software ~~Inc~~Corp com ~~055472104~~099849101 ~~872~~1694 ~~53000~~247004 SH SOLE ~~53000~~247004 0 0 ~~Borland~~Boston ~~Software~~Scientific Corp com ~~099849101~~101137107 ~~1168~~405 ~~100000~~15000 SH SOLE ~~100000~~15000 0 0 ~~Brinks~~Brink's Co com 109696104 ~~1134~~1033 28700 SH SOLE 28700 0 0 Brocade Communications Sys com 111621108 ~~1428~~741 ~~186958~~190958 SH SOLE ~~186958~~190958 0 0 Brooktrout Inc com 114580103 ~~803~~746 66853 SH SOLE 66853 0 0 ~~CDI Corp com 125071100 372 17400 SH SOLE 17400 0 0~~ Cadence Design ~~System~~Systems com 127387108 ~~261~~260 ~~18900~~19000 SH SOLE ~~18900~~19000 0 0 ~~Caesars Entertainment Inc com 127687101 806 40000 SH SOLE 40000 0 0~~ CalAmp Corp com ~~129900106~~128126109 ~~266~~213 ~~29800~~30000 SH SOLE ~~29800~~30000 0 0 Captaris Inc com 14071N104 ~~773~~618 ~~149715~~149329 SH SOLE ~~149715~~149329 0 0 Carreker Corp com 144433109 ~~1186~~1153 ~~137950~~210358 SH SOLE ~~137950~~210358 0 0 Carrington Labs Inc com 144525102 6346 10300 SH SOLE 10300 0 0 Celestica Inc sub vtg shs 15101Q108 ~~144~~136 10200 SH SOLE 10200 0 0 ~~Central Fght Lines Inc New com 153491105 299 47446 SH SOLE 47446 0 0~~ Century Business Svcs Inc com 156490104 ~~427~~397 97962 SH SOLE 97962 0 0 Clear Channel Communications com 184502102 ~~502~~464 15000 SH SOLE 15000 0 0 ~~Coherent Inc com 192479103 898 29493 SH SOLE 29493 0 0~~ Comfort Sys USA Inc com 199908104 ~~631~~249 ~~82100~~37900 SH SOLE ~~82100~~37900 0 0 CompuDyne Corp com par $0.75075 204795306 9892 13139 SH SOLE 13139 0 0 Computer Horizons Corp com 205908106 ~~375~~371 ~~98386~~118386 SH SOLE ~~98386~~118386 0 0 Computer Task Group com 205477102 ~~226~~145 40300 SH SOLE 40300 0 0 Comverse Technology com par $0.10 205862402 ~~1235~~698 ~~50500~~29548 SH SOLE ~~50500~~29548 0 0 ~~Concord~~Copart ~~Communications~~ Inc com ~~206186108~~217204106 ~~1062~~386 ~~95864~~16200 SH SOLE ~~95864~~16200 0 0 ~~Copart~~Covenant ~~Inc~~Transport com ~~217204106~~22284P105 ~~426~~826 ~~16200~~62592 SH SOLE ~~16200~~62592 0 0 ~~Datastream~~Curative ~~Sys~~Health ~~Inc~~Services com ~~238124101~~23126W100 ~~1170~~59 ~~168808~~26000 SH SOLE ~~168808~~26000 0 0 ~~DoubleClick~~Datastream Sys Inc com ~~258609304~~238124101 ~~1124~~1229 ~~144500~~168808 SH SOLE ~~144500~~168808 0 0 ~~Ellis~~DoubleClick ~~Perry Intl~~ Inc com ~~288853104~~258609304 ~~1171~~960 ~~57542~~114400 SH SOLE ~~57542~~114400 0 0 EDucommun MInc CDel ~~Corp Mass~~ com ~~268648102~~264147109 ~~595~~507 ~~40000~~30000 SH SOLE ~~40000~~30000 0 0 ~~First~~Dycom ~~Consulting~~Inds ~~Group~~ Inc com ~~31986R103~~267475101 ~~640~~1288 ~~104700~~65000 SH SOLE ~~104700~~65000 0 0 ~~Fluor~~E M C Corp Mass com ~~343412102~~268648102 ~~605~~946 ~~11100~~69000 SH SOLE ~~11100~~69000 0 0 ~~GSI~~Ellis ~~Lumonics~~Perry Intl Inc com ~~36229U102~~288853104 ~~138~~955 ~~12000~~40826 SH SOLE ~~12000~~40826 0 0 ~~Gap~~Fairchild ~~Inc~~Semi ~~Del~~Intl com ~~364760108~~303726103 ~~929~~369 ~~44000~~25000 SH SOLE ~~44000~~25000 0 0 ~~Gartner~~Family Dlr Stores Inc com ~~366651107~~307000109 ~~247~~653 ~~19800~~25000 SH SOLE ~~19800~~25000 0 0 ~~Glenayre~~Finisar ~~Technologies~~ com ~~377899109~~31787A101 ~~429~~26 ~~196700~~24500 SH SOLE ~~196700~~24500 0 0 ~~HMS~~First ~~Hldgs~~Consulting ~~Corp~~Group Inc com ~~40425J101~~31986R103 ~~113~~655 ~~12500~~128182 SH SOLE ~~12500~~128182 0 0 ~~Hayes~~GSI ~~Lemmerz~~Group ~~Intl~~ Inc com ~~new~~36229U102 ~~420781304~~450 ~~747~~47722 ~~84600~~ SH SOLE ~~84600~~47722 0 0 ~~Health~~Gap ~~Net~~ Inc Del com ~~42222G108~~364760108 ~~860~~869 ~~29800~~44000 SH SOLE ~~29800~~44000 0 0 ~~Healthtronics~~Gartner Inc com ~~42222L107~~366651107 ~~698~~210 ~~65634~~19800 SH SOLE ~~65634~~19800 0 0 ~~Hewitt~~HMS ~~Assocs~~Hldgs ~~Inc~~Corp com ~~42822Q100~~40425J101 ~~1990~~83 ~~62159~~12500 SH SOLE ~~62159~~12500 0 0 ~~Hewlett~~Hewitt ~~Packard~~Assocs CoInc com ~~428236103~~42822Q100 ~~710~~1648 ~~33838~~62159 SH SOLE ~~33838~~62159 0 0 ~~Hilb~~Hooper ~~Rogal~~Holmes &Inc ~~Hobbs Co~~ com ~~431294107~~439104100 ~~533~~470 ~~14700~~113200 SH SOLE ~~14700~~113200 0 0 ~~Hooper~~ICT ~~Holmes~~Group Inc com ~~439104100~~44929Y101 ~~439~~800 ~~74200~~76886 SH SOLE ~~74200~~76886 0 0 ~~ICT~~IVAX ~~Group~~Corp ~~Inc~~ com ~~44929Y101~~465823102 ~~682~~1196 ~~70231~~55625 SH SOLE ~~70231~~55625 0 0 ~~IVAX~~Ibis Technology Corp com ~~465823102~~450909106 ~~1196~~117 ~~75625~~57800 SH SOLE ~~75625~~57800 0 0 InFocus corp com 45665B106 ~~758~~343 82800 SH SOLE 82800 0 0 Inforte Corp com 45677R107 ~~407~~171 51591 SH SOLE 51591 0 0 Innovex Inc com 457647105 ~~572~~392 ~~104898~~114298 SH SOLE ~~104898~~114298 0 0 Intel Corp com 458140100 ~~709~~1153 ~~30300~~44300 SH SOLE ~~30300~~44300 0 0 ~~Intersil~~Intervoice ~~Corp~~Inc Clcom A461142101 ~~46069S109~~642 ~~627~~74398 ~~37500~~ SH SOLE ~~37500~~74398 0 0 JDA Software Group Inc com 46612K108 ~~1475~~1539 ~~108270~~135270 SH SOLE ~~108270~~135270 0 0 Jabil Circuit Inc com 466313103 ~~898~~495 ~~35100~~16100 SH SOLE ~~35100~~16100 0 0 Jones Apparel Group Inc com 480074103 ~~688~~1301 ~~18800~~41900 SH SOLE ~~18800~~41900 0 0 Keane Inc com 486665102 ~~437~~407 29700 SH SOLE 29700 0 0 Kellwood Co com 488044108 1009 37500 SH SOLE 37500 0 0 Kforce Inc com 493732101 ~~862~~986 ~~77664~~116496 SH SOLE ~~77664~~116496 0 0 LIN TV Corp com ser A 532774106 ~~722~~554 ~~37800~~39900 SH SOLE ~~37800~~39900 0 0 Lawson Software Inc com 520780107 ~~520~~938 ~~75659~~182179 SH SOLE ~~75659~~182179 0 0 ~~Liberty~~Learning ~~Media~~Tree ~~Corp~~Intl Inc com ~~530718105~~522015106 ~~384~~321 ~~35000~~26975 SH SOLE ~~35000~~26975 0 0 ~~Linen~~Liberty NMedia ~~Things~~Corp ~~Inc~~ com ~~535679104~~530718105 ~~370~~387 ~~14900~~38000 SH SOLE ~~14900~~38000 0 0 ~~MPS~~Linen ~~Group~~N Things Inc com ~~553409103~~535679104 ~~2052~~1062 ~~167400~~44900 SH SOLE ~~167400~~44900 0 0 ~~MRO~~MPS ~~Software~~Group Inc com ~~55347W105~~553409103 ~~671~~1718 ~~51500~~182400 SH SOLE ~~51500~~182400 0 0 ~~Manor~~MRO ~~Care~~Sofware Inc ~~New~~ com ~~564055101~~55347W105 ~~829~~811 ~~23400~~55517 SH SOLE ~~23400~~55517 0 0 Manugistic Group Inc com 565011103 ~~239~~184 ~~83278~~103278 SH SOLE ~~83278~~103278 0 0 ~~Mapics Inc com 564910107 1755 166851 SH SOLE 166851 0 0 McKesson Corp com 58155Q103 472 15000 SH SOLE 15000 0 0~~ Mentor Graphics Corp com 587200106 ~~321~~539 ~~21000~~52800 SH SOLE ~~21000~~52800 0 0 Merix Corp com 590049102 ~~535~~617 ~~46400~~105398 SH SOLE ~~46400~~105398 0 0 Modtech Hldgs Inc com 60783C100 ~~1079~~629 ~~137138~~96713 SH SOLE ~~137138~~96713 0 0 ~~NMS~~Motorola ~~Communications~~Inc ~~Corp~~ com ~~629248105~~620076109 ~~537~~391 ~~85170~~21400 SH SOLE ~~85170~~21400 0 0 ~~Nassda~~NMS Communications Corp com ~~63172M101~~629248105 ~~340~~491 ~~49238~~171797 SH SOLE ~~49238~~171797 0 0 Newell Rubbermaid Inc com 651229106 ~~774~~1111 ~~32000~~46600 SH SOLE ~~32000~~46600 0 0 Nokia Corp ~~Sponsored~~sponsored ADR 654902204 ~~956~~1265 ~~61000~~76000 SH SOLE ~~61000~~76000 0 0 Nortel Networks ~~Corporation~~Corp com 656568102 ~~458~~354 ~~132000~~135800 SH SOLE ~~132000~~135800 0 0 Novell Inc com 670006105 ~~911~~1480 ~~135037~~238671 SH SOLE ~~135037~~238671 0 0 Nu Horizons Electrs Corp com 669908105 ~~196~~157 24518 SH SOLE 24518 0 0 On-Assignment Inc com 682159108 ~~911~~899 ~~175450~~180450 SH SOLE ~~175450~~180450 0 0 Open Text Corp com 683715106 145 10259 SH SOLE 10259 0 0 Optical Communication Prods Cl A 68382T101 90195 ~~36164~~102519 SH SOLE ~~36164~~102519 0 0 Osteotech Inc com 688582105 ~~445~~518 ~~80904~~140797 SH SOLE ~~80904~~140797 0 0 PC-Tel Inc com 69325Q105 ~~233~~230 29331 SH SOLE 29331 0 0 ~~Park~~PDI ~~Electrochemical~~Inc ~~Corp~~ com ~~700416209~~69329V100 ~~820~~478 ~~37800~~38773 SH SOLE ~~37800~~38773 0 0 ~~Pec~~Park ~~Solutions~~Electrochemical ~~Inc~~Corp com ~~705107100~~700416209 ~~312~~827 ~~22008~~32800 SH SOLE ~~22008~~32800 0 0 Pervasive Software Inc com 715710109 ~~308~~323 ~~63500~~76350 SH SOLE ~~63500~~76350 0 0 ~~Photronics~~Pfizer Inc com ~~719405102~~717081103 ~~1333~~276 ~~80766~~10000 SH SOLE ~~80766~~10000 0 0 ~~Pinnacle~~Photronics ~~Sys~~ Inc com ~~723481107~~719405102 ~~472~~508 ~~77300~~21766 SH SOLE ~~77300~~21766 0 0 ~~Planar~~Pixelworks ~~Sys~~ Inc com ~~726900103~~72581M107 ~~393~~150 ~~35000~~17500 SH SOLE ~~35000~~17500 0 0 ~~Plumtree~~Pride ~~Software~~Intl Inc Del com ~~72940Q104~~74153Q102 ~~491~~285 ~~108620~~11100 SH SOLE ~~108620~~11100 0 0 ~~Powerwave~~RCM Technologies Inc com ~~739363109~~new ~~730~~749360400 ~~86100~~358 81800 SH SOLE ~~86100~~81800 0 0 ~~Pride~~RF ~~Intl~~MicroDevices Inc ~~Del~~ com ~~74153Q102~~749941100 ~~228~~560 ~~11100~~103500 SH SOLE ~~11100~~103500 0 0 ~~Quantum~~RSA ~~Corp~~Sec ~~com DSSG 747906204 188 71700 SH SOLE 71700 0 0 RCM Technologies~~ Inc com ~~new~~749719100 ~~749360400~~644 ~~491~~56094 ~~97600~~ SH SOLE ~~97600~~56094 0 0 Radiant Systems Inc com 75025N102 ~~1422~~1337 ~~218494~~117241 SH SOLE ~~218494~~117241 0 0 Regeneration Tech Inc Del com 75886N100 ~~1550~~895 ~~147921~~142921 SH SOLE ~~147921~~142921 0 0 ~~RehabCare~~S1 ~~Group~~Corporation com ~~759148109~~78463B101 ~~560~~471 ~~20000~~100000 SH SOLE ~~20000~~100000 0 0 ~~Retek Inc com 76128Q109 2115 343845 SH SOLE 343845 0 0~~ SCS Transn Inc com 81111T102 ~~481~~598 ~~20600~~33600 SH SOLE ~~20600~~33600 0 0 ~~Sandisk~~Schulman ~~Corp~~A Inc com ~~80004C101~~808194104 ~~211~~1408 ~~8470~~78720 SH SOLE ~~8470~~78720 0 0 ~~Scholastic~~Sentry ~~Corp~~Technology com ~~807066105~~81731K101 ~~816~~5 ~~22090~~45100 SH SOLE ~~22090~~45100 0 0 ~~Schulman~~Siebel ASys Inc com ~~808194104~~826170102 ~~1115~~719 ~~52100~~80741 SH SOLE ~~52100~~80741 0 0 ~~Siebel~~Six ~~Sys~~Flags Inc com ~~826170102~~83001P109 ~~532~~1364 ~~50741~~293300 SH SOLE ~~50741~~293300 0 0 ~~Six~~Skyworks ~~Flags~~Solutions Inc com ~~83001P109~~83088M102 991518 ~~18400~~206023 SH SOLE ~~18400~~206023 0 0 ~~Skyworks~~Smurfit-Stone ~~Solutions~~Container ~~Inc~~Corp com ~~83088M102~~832727101 ~~1056~~1220 ~~112023~~120000 SH SOLE ~~112023~~120000 0 0 Solectron Corp com 834182107 ~~653~~573 ~~122474~~151274 SH SOLE ~~122474~~151274 0 0 Sonic Innovations Inc com 83545M109 ~~432~~496 103550 SH SOLE 103550 0 0 SourceCorp com 836167106 ~~696~~721 36400 SH SOLE 36400 0 0 Southwest Airls Co com 844741108 ~~1709~~1765 ~~105000~~126700 SH SOLE ~~105000~~126700 0 0 ~~Steelcase Inc CL A 858155203 248 17900 SH SOLE 17900 0 0~~ Stewart & Stevenson Svcs Inc com 860342104 ~~1248~~492 ~~61700~~21700 SH SOLE ~~61700~~21700 0 0 Stonepath Group com 861837102 5744 47292 SH SOLE 47292 0 0 Sun Microsystems Inc com 866810104 ~~1529~~1058 283600 SH SOLE 283600 0 0 ~~Swift~~Sunrise ~~Transn~~Telecom CoInc com ~~870756103~~86769Y105 ~~1246~~144 ~~58000~~70124 SH SOLE ~~58000~~70124 0 0 ~~Sycamore~~SupportSoft ~~Networks~~ Inc com ~~871206108~~868587106 ~~626~~519 ~~154126~~100000 SH SOLE ~~154126~~100000 0 0 ~~Sykes~~Swift ~~Enterprises~~Transn Co com 870756103 320 13741 SH SOLE 13741 0 0 Sycamore Networks Inc com ~~871237103~~871206108 ~~872~~532 ~~125416~~154126 SH SOLE ~~125416~~154126 0 0 Symbol Technologies Inc com 871508107 ~~1176~~721 ~~68000~~73000 SH SOLE ~~68000~~73000 0 0 TII Network ~~Tech~~Technologies Inc com new 872479209 2322 15000 SH SOLE 15000 0 0 Technitrol Inc com 878555101 ~~1127~~1347 ~~61900~~95300 SH SOLE ~~61900~~95300 0 0 TeleTech Holdings Inc com 879939106 ~~432~~251 ~~44594~~30850 SH SOLE ~~44594~~30850 0 0 ~~Texas~~Tellabs ~~Instrs~~Inc com 879664100 744 85566 SH SOLE 85566 0 0 Time Warner Inc com ~~882508104~~887317105 ~~1192~~1086 ~~48400~~65000 SH SOLE ~~48400~~65000 0 0 Tredegar ~~Corp~~ com ~~894650100~~895650100 ~~226~~175 11200 SH SOLE 11200 0 0 ~~Verisity~~TriPath ~~Ltd~~Technology ~~ord~~Inc ~~M97385112~~com ~~1637~~89672P104 ~~199663~~29 45000 SH SOLE ~~199663~~45000 0 0 VA Software Corp com 91819B105 34 19800 SH SOLE 19800 0 0 Verity Inc com 92343C106 ~~1811~~1822 ~~138005~~207807 SH SOLE ~~138005~~207807 0 0 ~~Vignette~~Vishay ~~Corp~~Intertechnology Inc com ~~926734104~~928298108 51679 ~~36768~~57200 SH SOLE ~~36768~~57200 0 0 ~~VitalWorks~~Vivus Inc com ~~928483106~~928551100 ~~597~~325 ~~134205~~88100 SH SOLE ~~134205~~88100 0 0 W-H Energy Svcs Inc com 92925E108 ~~941~~676 ~~42100~~27100 SH SOLE ~~42100~~27100 0 0 WebMD Corp com 94769M105 ~~965~~1214 118200 SH SOLE 118200 0 0 WebMethods Inc com 94768C108 845 150837 SH SOLE 150837 0 0 Zilog Inc com 989524301 397 94063 SH SOLE 94063 0 0 Zomax Inc Minn com 989929104 ~~680~~460 165477 SH SOLE 165477 0 0

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