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Fund Holdings of DF DENT & CO INC Filed on 2012-02-06

Link to Original SEC 13F filings sorted on filing date: 2012-02-06 | 2011-10-17 | 2011-08-08 | 2011-04-21 | 2011-01-26 | 2010-10-18 | 2010-07-27 | 2010-04-16 | 2010-01-26 | 2009-10-09 | 2009-07-17 | 2009-04-16 | 2009-01-20 | 2008-10-17 | 2008-07-22 | 2008-04-14 |

1. Fund Information

Fund NameDF DENT & CO INC
Fund Manager
Address2 EAST READ STREET, 6TH FLOOR
BALTIMORE, MD, 21202
::Google Map
Phone(410) 837-2544
13F Asset Last Qtr$2,535,337,848
13F Asset This Qtr$2,881,119,818
Asset Change13.64%

2. Comparison of Holdings by Sectors with Last Quarter

3. Top 20 Holdings (Value) of This Quarter

No.SecurityPut/CallStockSharesValue(x$1000)Activity(Shr)% Port.
1.)FASTENAL COMPANYFAST6,300,722$274,774Cut -7.26%9.54%
2.)ANSYS, INC.ANSS2,374,698$136,023Cut -0.52%4.72%
3.)IDEXX LABORATORIES, INC.IDXX1,742,520$134,104Cut -14.81%4.65%
4.)QUALCOMM INCORPORATEDQCOM2,233,110$122,151Cut -0.43%4.24%
5.)TRIMBLE NAVIGATION LIMITEDTRMB2,400,454$104,180Cut -0.70%3.62%
6.)EXPEDITORS INTERNATIONAL OF WASHINGTON, INC.EXPD2,531,758$103,701Cut -1.00%3.60%
7.)ROPER INDUSTRIES, INCROP1,139,167$98,959Cut -1.34%3.43%
8.)T. ROWE PRICE GROUP, INC.TROW1,680,064$95,680Cut -0.98%3.32%
9.)LKQ CORPORATION - LKQ CORPORATION COMMON STOCKLKQX3,115,741$93,721Cut 0.00%3.25%
10.)SCHLUMBERGER LTD.SLB1,358,993$92,833Cut -1.06%3.22%
11.)MARKEL CORP (HOLDING CO)MKL193,406$80,200Cut -2.37%2.78%
12.)JACOBS ENGINEERING GROUP, INC.JEC1,973,523$80,086Cut -5.29%2.78%
13.)RESMED INC.RMD3,035,279$77,096Added 15.49%2.68%
14.)ULTRA PETROLEUM CORP.UPL2,422,521$71,779Added 10.07%2.49%
15.)AMERICAN TOWER CORP1,152,376$69,154New2.40%
16.)CELGENE CORPORATIONCELG1,005,054$67,942Added 2.69%2.36%
17.)ECOLAB, INC.ECL1,124,704$65,019Added 15.12%2.26%
18.)POTASH CORP. OF SASKATCHEWAN INC.POT1,556,529$64,254Added 7.69%2.23%
19.)DEALERTRACK HOLDINGS, INC.TRAK2,306,402$62,873Added 13.09%2.18%
20.)VISA INC. VISA INC.V604,021$61,326Cut -0.84%2.13%

4. Top 20 (Value) Holdings BOUGHT NEW in This Quarter

No.SecurityPut/CallStockShares NEWValue(x$1000)% Port.
1.)AMERICAN TOWER CORP1,152,376$69,1542.40%
2.)ISHARE SP500 BAR/GROIVW50,981$3,4380.12%
3.)LEGG MASON VALUE TRUST INC.LMVTX9,204$3430.01%
4.)MURPHY OIL CORPMUR4,400$2450.01%
5.)M & T BANK CORPMTB2,750$2100.01%
6.)MAGELLAN MIDSTREAM PARTNERS LPMMP3,000$2070.01%
7.)MERIDIAN BIOSCIENCE INC.VIVO11,000$2070.01%
8.)JPMORGAN CHASE & CO.JPM6,207$2060.01%
9.)BRISTOL-MYERS SQUIBB CO.BMY2,100$740.00%
10.)MCMORAN EXPLORATION COMMR5,000$730.00%
11.)PROSHARES ULTRASHORT BARCLAYS 20+ TRSYTBT1,500$270.00%

5. Top 20 (Value) Holdings Totally SOLD OUT in This Quarter

No.SecurityPut/CallStockShares SOLDValue(x$1000)% Port. Last Qtr
1.)AMERICAN TOWER CORP.AMT1,167,946$62,8362.48%
2.)CAPELLA EDUCATION COMPANYCPLA194,475$5,5190.22%
3.)VANGUARD REIT ETFVNQ4,090$2080.01%
4.)EMC CORP. (MA)EMC9,775$2050.01%
5.)FIDELITY FREEDOM 2020FFFDX14,214$1830.01%
6.)GLACIER BANCORP, INC.GBCI16,672$1560.01%
7.)IRON MOUNTAIN INCIRM100$30.00%