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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 (2014Q1)
Original 13F HR (0000934999-14-000005) filed in 2014.04.16
#
Name
Shares
Value ($)
%
Options
Notes
1 FASTENAL CO 5,487,575 270,537 6.32%
2 LKQ CORP 4,820,223 127,013 2.97%
3 TRIMBLE INC 4,168,399 162,026 3.79%
4 SEI INVESTMENTS CO 3,642,796 122,434 2.86%
5 WASTE CONNECTIONS INC COM 2,540,377 111,421 2.60%
6 HEALTHCARE SVCS GRP INC 2,299,736 66,830 1.56%
7 ANSYS 2,180,440 167,937 3.92%
8 RED HAT INC 2,136,436 113,188 2.64%
9 EXPEDITORS INTL WASH INC 2,128,973 84,371 1.97%
10 EXAMWORKS 1,896,516 66,397 1.55%
11 QUALCOMM INC 1,835,099 144,716 3.38%
12 WAGEWORKS INC COM 1,756,962 98,583 2.30%
13 SOUTHWESTERN ENERGY CO 1,628,200 74,913 1.75%
14 DISCOVER FINL SVCS 1,613,700 93,901 2.19%
15 JACOBS ENGR GROUP INC 1,469,504 93,314 2.18%
16 DEALERTRACK TECHNOLOGIES INC 1,461,095 71,871 1.68%
17 MOODYS CORP 1,397,269 110,831 2.59%
18 VERISK ANALYTICS INC 1,394,238 83,599 1.95%
19 3-D SYS CORP DEL 1,376,571 81,424 1.90%
20 SCHLUMBERGER LTD 1,334,803 130,143 3.04%
21 CLEAN HARBORS INC 1,262,457 69,170 1.62%
22 CareFusion 1,114,080 44,808 1.05%
23 ECOLAB INC 1,102,159 119,022 2.78%
24 STERICYCLE INC 1,088,224 123,644 2.89%
25 AMERICAN TOWER CORP NEW 958,018 78,433 1.83%
26 CONCHO RESOURCES 940,544 115,217 2.69%
27 CONCUR TECHNOLOGIE 907,362 89,892 2.10%
28 TANGOE INC COM DELETED 832,354 15,473 0.36%
29 FINANCIAL ENGINES INC 813,253 41,297 0.96%
30 POTASH CORP SASK INC 795,825 28,825 0.67%
31 Signet Jewelers Ltd. 772,552 81,782 1.91%
32 CARMAX INC 757,852 35,467 0.83%
33 LIQUIDITY SERVICES INC 729,028 18,991 0.44%
34 ROPER TECHNOLOGIES INC 723,028 96,531 2.26%
35 RANGE RES CORP 677,777 56,235 1.31%
36 CELGENE CORP 620,605 86,636 2.02%
37 EXPONENT INC 556,937 41,804 0.98%
38 VISA INC 536,814 115,877 2.71%
39 TYLER TECHNOLOGIES INC 531,999 44,518 1.04%
40 INTEL CORP 512,502 13,230 0.31%
41 COSTAR GROUP INC 499,945 93,360 2.18%
42 CORE LABORATORIES N V 356,460 70,736 1.65%
43 PRICESMART INC 334,316 33,743 0.79%
44 CARTERS INC 327,172 25,405 0.59%
45 PROCTER AND GAMBLE CO 294,887 23,768 0.56%
46 PRICE T ROWE GROUP INC 280,851 23,128 0.54%
47 MARKEL CORP 234,596 139,843 3.27%
48 ILLUMINA INC 199,590 29,671 0.69%
49 DORMAN PRODUCTS INC 160,464 9,477 0.22%
50 PANERA BREAD CO 157,119 27,727 0.65%
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