0000934999-11-000011.txt : 20110808 0000934999-11-000011.hdr.sgml : 20110808 20110808100918 ACCESSION NUMBER: 0000934999-11-000011 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20110630 FILED AS OF DATE: 20110808 DATE AS OF CHANGE: 20110808 EFFECTIVENESS DATE: 20110808 FILER: COMPANY DATA: COMPANY CONFORMED NAME: DF DENT & CO INC CENTRAL INDEX KEY: 0000934999 IRS NUMBER: 521045317 STATE OF INCORPORATION: MD FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-03691 FILM NUMBER: 111015910 BUSINESS ADDRESS: STREET 1: 2 EAST READ STREET STREET 2: 6TH FLOOR CITY: BALTIMORE STATE: MD ZIP: 21202 BUSINESS PHONE: 4108372544 MAIL ADDRESS: STREET 1: DF DENT & CO INC STREET 2: 2 EAST READ ST CITY: BALTIMORE STATE: MD ZIP: 21202 13F-HR 1 inftable.txt JUNE 2011 13F REPORT FORM 13F INFORMATION TABLE VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- 3D SYSTEMS CORP COM 88554D205 40381 2048749 SH Sole 2048749 3M CO COM 88579Y101 470 4950 SH Sole 4950 ABBOTT LABORATORIES COM 002824100 1126 21405 SH Sole 21405 ACTUANT CORP A COM 00508X203 4489 167297 SH Sole 167297 ADTRAN INC COM 00738A106 51321 1325792 SH Sole 1325792 AGNICO-EAGLE MINES LTD COM 008474108 12301 194859 SH Sole 194859 ALTERA CORP COM 021441100 251 5418 SH Sole 5418 AMDOCS LIMITED COM G02602103 175 5750 SH Sole 5750 AMERICAN PUBLIC EDUCATION INC COM 02913V103 43035 966864 SH Sole 966864 AMERICAN TOWER CORP COM 029912201 61271 1170864 SH Sole 1170864 AMGEN INC COM 031162100 80 1366 SH Sole 1366 ANADARKO PETROLEUM CORP COM 032511107 215 2800 SH Sole 2800 ANSYS INC COM 03662Q105 129320 2365472 SH Sole 2365472 APACHE CORP COM 037411105 45514 368862 SH Sole 368862 APPLE COMPUTER INC COM 037833100 842 2508 SH Sole 2508 AUTOMATIC DATA PROCESSING COM 053015103 1828 34700 SH Sole 34700 BAKER HUGHES, INC. COM 057224107 177 2433 SH Sole 2433 BEACON ROOFING SUPPLY INC COM 073685109 57860 2535478 SH Sole 2535478 BECTON DICKINSON & CO COM 075887109 204 2367 SH Sole 2367 BERKSHIRE HATHAWAY INC COM 084670108 581 5 SH Sole 5 BERKSHIRE HATHAWAY INC. DEL CL COM 084670702 1999 25825 SH Sole 25825 BHP BILLITON LTD COM 088606108 24 250 SH Sole 250 CANADIAN NATIONAL RAILROAD CO COM 136375102 959 12000 SH Sole 12000 CAPELLA EDUCATION COMPANY COM 139594105 8638 206409 SH Sole 206409 CAPITAL ONE FINANCIAL COM 14040H105 1544 29879 SH Sole 29879 CARMAX INC COM 143130102 625 18900 SH Sole 18900 CATERPILLAR INC COM 149123101 138 1300 SH Sole 1300 CELGENE CORP COM 151020104 59431 985262 SH Sole 985262 CHEVRON CORP COM 166764100 864 8404 SH Sole 8404 CHICAGO BRIDGE & IRON CO NV COM 167250109 66 1695 SH Sole 1695 CISCO SYSTEMS INC COM 17275R102 19002 1217328 SH Sole 1217328 COCA COLA CO COM 191216100 768 11417 SH Sole 11417 COLGATE-PALMOLIVE COM 194162103 437 5000 SH Sole 5000 COMCAST CORP - A COM 20030N101 367 14500 SH Sole 14500 COMCAST CORP - A - SPL COM 20030N200 2823 116511 SH Sole 116511 COMPOSITE TECH CORP COM 20461S108 0 1000 SH Sole 1000 CONCHO RESOURCES INC COM 20605P101 795 8650 SH Sole 8650 CONOCOPHILLIPS COM COM 20825C104 262 3480 SH Sole 3480 CONSOLIDATED ENERGY INC COM 20854P109 2922 60271 SH Sole 60271 CORE LABORATORIES NV COM N22717107 44835 401967 SH Sole 401967 COSTCO WHOLESALE CRP DEL COM 22160K105 50 616 SH Sole 616 CROWN CASTLE INTL CORP COM 228227104 3633 89070 SH Sole 89070 CVS/CAREMARK CORP COM 126650100 9 250 SH Sole 250 DANAHER CORP COM 235851102 472 8916 SH Sole 8916 DEALERTRAK HOLDINGS, INC COM 242309102 46300 2017430 SH Sole 2017430 DEERE & CO COM 244199105 203 2460 SH Sole 2460 DENTSPLY INTL COM 249030107 3416 89711 SH Sole 89711 DONALDSON INC COM 257651109 4760 78450 SH Sole 78450 DUKE REALTY CORP COM 264411505 218 15550 SH Sole 15550 EAST WEST BANCORP INC COM 27579R104 548 27100 SH Sole 27100 EATON VANCE CP COM 278265103 13 434 SH Sole 434 ECOLAB INC COM 278865100 44769 794066 SH Sole 794066 ELI LILLY & CO COM 532457108 223 5950 SH Sole 5950 EMC CORP COM 268648102 574 20838 SH Sole 20838 EMERSON COM 291011104 149 2656 SH Sole 2656 ENTERPRISE PRODUCTS PARTNERS L COM 293792107 415 9600 SH Sole 9600 EQT CORPORATION COM 26884L109 2204 41968 SH Sole 41968 EQUITY RESIDENTIAL PROPERTYS I COM 29476l107 487 8123 SH Sole 8123 EUROSEAS LTD COM Y23592200 54 12400 SH Sole 12400 EXPEDITORS INTERNATIONAL COM 302130109 131075 2560551 SH Sole 2560551 EXPRESS SCRIPTS INC COM 302182100 1072 19866 SH Sole 19866 EXXON MOBIL CORP COM 30231G102 1823 22404 SH Sole 22404 FASTENAL CO COM 311900104 248121 6894176 SH Sole 6894176 FISERV INC COM 337738108 2991 47751 SH Sole 47751 FLUOR CORP COM 343412102 36 550 SH Sole 550 FMC TECHNOLOGIES INC. COM 30249U101 673 15024 SH Sole 15024 FORTINET INC COM 34959e109 1632 59800 SH Sole 59800 FOSTER WHEELER LTD COM H27178104 19 625 SH Sole 625 FREEPORT MCMORAN COPPER & GOLD COM 35671D857 633 11971 SH Sole 11971 GENERAL ELECTRIC COM 369604103 3002 159159 SH Sole 159159 GLACIER BANCORP COM 37637Q105 488 36226 SH Sole 36226 GOLDMAN SACHS GROUP COM 38141G104 64 480 SH Sole 480 GOOGLE INC CL A COM 38259P508 147 290 SH Sole 290 HCP INC COM 40414L109 5022 136882 SH Sole 136882 HEALTHCARE SERVICES GROUP INC COM 421906108 30449 1873789 SH Sole 1873789 HENRY SCHEIN INC. COM 806407102 54 758 SH Sole 758 HEWLETT-PACKARD COM 428236103 540 14832 SH Sole 14832 IDEXX LABORATORIES, INC. COM 45168D104 162179 2091008 SH Sole 2091008 II-VI INC COM 902104108 51969 2030039 SH Sole 2030039 ILLINOIS TOOL WORKS COM 452308109 48 850 SH Sole 850 INTEL CORP COM 458140100 36243 1635525 SH Sole 1635525 INTL BUSINESS MACH CORP COM 459200101 2966 17289 SH Sole 17289 IRON MOUNTAIN COM 462846106 3 100 SH Sole 100 J P MORGAN CHASE & CO COM 46625H100 258 6314 SH Sole 6314 JACOBS ENGINEERING CP INC COM 469814107 90578 2094300 SH Sole 2094300 JAMBA, INC. COM 47023A101 16 7700 SH Sole 7700 JOHNSON & JOHNSON COM 478160104 7669 115283 SH Sole 115283 JOHNSON CONTROLS INC COM 478366107 321 7716 SH Sole 7716 K12 INC COM 48273U102 38351 1157249 SH Sole 1157249 KINDER MORGAN MGT LLC COM 49455U100 546 8328 SH Sole 8328 KINROSS GOLD CORP COM 496902404 103 6500 SH Sole 6500 LABORATORY CORP OF AMERICA HOL COM 50540R409 9159 94624 SH Sole 94624 LANDSTAR SYSTEMS INC COM 515098101 4961 106736 SH Sole 106736 LEGG MASON INC COM 524901105 88 2676 SH Sole 2676 LKQ CORP COM 501889208 74307 2848112 SH Sole 2848112 LYNAS CORP LTD COM Q5683J103 144 75000 SH Sole 75000 MAG SILVER CORP COM 55903Q104 8 800 SH Sole 800 MARKEL CORP COM 570535104 80838 203720 SH Sole 203720 MASTERCARD INC CL A COM 57636Q104 970 3219 SH Sole 3219 McCORMICK & CO COM 579780206 699 14110 SH Sole 14110 MERCK & CO COM 58933Y105 879 24917 SH Sole 24917 METROPCS COMMUNICATIONS, INC. COM 591708102 391 22700 SH Sole 22700 MHI HOSPITALITY CORP COM 55302L102 50 17125 SH Sole 17125 MICROSOFT CORP COM 594918104 4123 158589 SH Sole 158589 MIDDLEBY CORP COM 596278101 1259 13383 SH Sole 13383 MONSANTO CO COM 61166W101 18048 248805 SH Sole 248805 MOSIAC COMPANY COM 61945C103 13609 200933 SH Sole 200933 MURPHY OIL CORP COM 626717102 289 4400 SH Sole 4400 NATIONAL AMERICAN UNIV HOLDING COM 63245Q105 13247 1407749 SH Sole 1407749 NATIONWIDE HEALTH PROPERTIES COM 638620104 2538 61283 SH Sole 61283 NEOGEN CORP COM 640491106 294 6500 SH Sole 6500 NESTLE S.A. COM 641069406 398 6374 SH Sole 6374 NEWMONT MINING CORP COM 651639106 182 3364 SH Sole 3364 NOKIA CORP ADR COM 654902204 14 2190 SH Sole 2190 NORFOLK SOUTHERN CORP COM 655844108 202 2700 SH Sole 2700 NUANCE COMMUNICATIONS COM 67020Y100 249 11600 SH Sole 11600 PAYCHEX COM 704326107 6988 227482 SH Sole 227482 PEABODY ENERGY CORP COM 704549104 38 638 SH Sole 638 PEPSICO INC COM 713448108 377 5354 SH Sole 5354 PFIZER INC COM 717081103 1043 50650 SH Sole 50650 PHILIP MORRIS INTL COM 718172109 456 6830 SH Sole 6830 PINNACLE WEST CAPITOL CORP COM 723484101 241 5400 SH Sole 5400 PNC FINANCIAL SVCS INC COM 693475105 1601 26856 SH Sole 26856 POOL CORPORATION COM 73278L105 272 9127 SH Sole 9127 POTASH CORP OF SASKATCHEWAN COM 73755L107 82154 1441543 SH Sole 1441543 PRECISION CASTPARTS CORP COM 740189105 296 1800 SH Sole 1800 PROCTER & GAMBLE CO COM 742718109 23280 366217 SH Sole 366217 QUALCOMM INC COM 747525103 127947 2252989 SH Sole 2252989 QUANTA SERVICES INC COM 74762e102 50742 2511975 SH Sole 2511975 RANGE RESOURCES CORP COM 75281A109 38499 693671 SH Sole 693671 RENAISSANCE RE HOLDINGS LTD COM G7496G103 40062 572721 SH Sole 572721 RESMED INC COM 761152107 80387 2597320 SH Sole 2597320 RIO TINTO PLC COM 767204100 223 3080 SH Sole 3080 ROPER INDUSTRIES, INC COM 776696106 96361 1156795 SH Sole 1156795 SBA COMMUNICATIONS CORP COM 78388J106 992 25970 SH Sole 25970 SCHLUMBERGER LTD COM 806857108 119588 1384126 SH Sole 1384126 SIGMA-ALDRICH CORP COM 826552101 55 750 SH Sole 750 SILVER WHEATON CORP COM 828336107 330 10000 SH Sole 10000 STATE STREET CORPORATION COM 857477103 147 3258 SH Sole 3258 STERICYCLE INC COM 858912108 57670 647109 SH Sole 647109 STONEMOR PARTNERS LP COM 86183Q100 360 13000 SH Sole 13000 STRYKER CORP COM 863667101 3927 66911 SH Sole 66911 SUNCOR ENERGY INC COM 867224107 268 6859 SH Sole 6859 T ROWE PRICE GROUP INC COM 74144T108 91935 1523619 SH Sole 1523619 TECHNE CORP COM 878377100 55100 660911 SH Sole 660911 TELEFLEX INC COM 879369106 229 3750 SH Sole 3750 TEVA PHARMACEUTICAL ADR COM 881624209 70061 1452953 SH Sole 1452953 TEXAS INSTRUMENTS COM 882508104 6 175 SH Sole 175 TRIMBLE NAVIGATION LTD COM 896239100 86593 2184475 SH Sole 2184475 U.S. BANCORP COM 902973304 896 35117 SH Sole 35117 ULTRA PETROLEUM CORP COM 903914109 97748 2134230 SH Sole 2134230 UNION PACIFIC CORP COM 907818108 133 1275 SH Sole 1275 UNIT CORP COM 909218109 47978 787429 SH Sole 787429 UNITED TECHNOLOGIES CORP COM 913017109 409 4621 SH Sole 4621 VISA INC COM 92826C839 57813 686131 SH Sole 686131 WALT DISNEY CO COM 254687106 346 8869 SH Sole 8869 WELLS FARGO & CO COM 949746101 560 19975 SH Sole 19975 WHOLE FOODS MARKET COM 966837106 501 7900 SH Sole 7900 WR BERKLEY CORP COM 084423102 3794 116957 SH Sole 116957 ENERPLUS RESOURCES FUND 29274D604 193 6117 SH Sole 6117 VANGUARD EMERGING MARKETS 922042858 214 4400 SH Sole 4400 VANGUARD FTSE ALL-WORLD EX-US 922042775 969 19445 SH Sole 19445 ALPINE REALTY INCOME & GROWTH 020940862 181 10901 SH Sole 10901 AMERICAN CENTURY GROWTH INV CL 025083106 251 9191 SH Sole 9191 ARTIO INTL EQUITY FUND II CL A 04315J845 308 24419 SH Sole 24419 BRADYWINE BLUE 10532B101 185 7070 SH Sole 7070 BUFFALO SCIENCE & TECH FD 119530103 184 10958 SH Sole 10958 DAVIS NY VENTURE FD CL A 239080104 746 21194 SH Sole 21194 DF DENT PREMIER GROWTH FUND 349903419 1041 59147 SH Sole 59147 HARBOR FUND INTERNATIONAL FUND 411511306 921 14200 SH Sole 14200 MASTERS SELECT INTERNATIONAL 576417208 89 5690 SH Sole 5690 T ROWE PRICE INTNL FUND 77956H203 403 27094 SH Sole 27094 VANGUARD REIT FUND INDEX 921908703 249 12495 SH Sole 12495 WASATCH HERITAGE GROWTH FUND 936793603 129 10098 SH Sole 10098