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Institutional Investment Manager
DF DENT & CO INC
DF DENT & CO INC (CIK: 0000934999) incorporated in Maryland, located at 400 East Pratt Street, Baltimore, MD. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q4)
Original 13F HR (0000934999-15-000001) filed in 2015.02.12
#
Name
Shares
Value ($)
%
Options
Notes
1 FASTENAL CO 5,023,443 238,915 5.80%
2 ANSYS 2,137,484 175,274 4.26%
3 RED HAT INC 2,254,620 155,884 3.79%
4 LKQ CORP 5,470,162 153,821 3.74%
5 SEI INVESTMENTS CO 3,733,896 149,505 3.63%
6 MARKEL CORP 198,910 135,824 3.30%
7 VISA INC 502,908 131,862 3.20%
8 WAGEWORKS INC COM 1,972,274 127,350 3.09%
9 MOODYS CORP 1,264,943 121,194 2.94%
10 Signet Jewelers Ltd. 911,295 119,899 2.91%
11 CELGENE CORP 1,054,708 117,980 2.87%
12 ECOLAB INC 1,115,549 116,597 2.83%
13 STERICYCLE INC 868,056 113,785 2.76%
14 DISCOVER FINL SVCS 1,710,424 112,016 2.72%
15 TRIMBLE INC 4,118,470 109,304 2.66%
16 CARMAX INC 1,600,778 106,580 2.59%
17 COSTAR GROUP INC 562,458 103,284 2.51%
18 VERISK ANALYTICS INC 1,566,293 100,321 2.44%
19 ROPER TECHNOLOGIES INC 637,287 99,640 2.42%
20 QUALCOMM INC 1,223,652 90,954 2.21%
21 IMAX CORP 2,751,345 85,017 2.07%
22 EXAMWORKS 1,896,776 78,887 1.92%
23 WASTE CONNECTIONS INC COM 1,785,911 78,562 1.91%
24 CONCHO RESOURCES 780,735 77,878 1.89%
25 DEALERTRACK TECHNOLOGIES INC 1,689,298 74,853 1.82%
26 AMERICAN TOWER CORP NEW 695,748 68,775 1.67%
27 CORE LABORATORIES N V 562,993 67,751 1.65%
28 HEALTHCARE SVCS GRP INC 2,076,969 64,241 1.56%
29 PRICESMART INC 652,653 59,535 1.45%
30 3-D SYS CORP DEL 1,769,457 58,162 1.41%
31 Intuitive Surgical Inc 107,071 56,634 1.38%
32 FINANCIAL ENGINES INC 1,489,668 54,447 1.32%
33 TYLER TECHNOLOGIES INC 478,740 52,393 1.27%
34 STRATASYS LTD 586,698 48,760 1.18%
35 EXPEDITORS INTL WASH INC 1,045,979 46,661 1.13%
36 TANGOE INC COM DELETED 3,486,009 45,423 1.10%
37 BIO TECHNE CORP 480,134 44,364 1.08%
38 SCHLUMBERGER LTD 502,971 42,959 1.04%
39 BIOGEN INC 123,573 41,947 1.02%
40 EXPONENT INC 479,287 39,541 0.96%
41 RANGE RES CORP 713,068 38,114 0.93%
42 ILLUMINA INC 168,706 31,140 0.76%
43 POTASH CORP SASK INC 752,007 26,561 0.65%
44 PROCTER AND GAMBLE CO 254,124 23,148 0.56%
45 O REILLY AUTOMOTIVE INC NEW 108,908 20,978 0.51%
46 CHIPOTLE MEXICAN GRILL INC 28,013 19,175 0.47%
47 PRICE T ROWE GROUP INC 193,061 16,576 0.40%
48 INTEL CORP 436,407 15,837 0.38%
49 Blackbaud Inc 325,828 14,095 0.34%
50 JOHNSON & JOHNSON 105,145 10,995 0.27%
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