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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 (2015Q4)
Original 13F HR (0000934999-16-000018) filed in 2016.02.12
#
Name
Shares
Value ($)
%
Options
Notes
1 ANSYS 1,848,745 171,009 4.80%
2 RED HAT INC 1,898,448 157,210 4.41%
3 LKQ CORP 5,221,053 154,700 4.34%
4 SEI INVESTMENTS CO 2,633,959 138,019 3.87%
5 VISA INC 1,720,019 133,387 3.74%
6 MOODYS CORP 1,303,985 130,842 3.67%
7 ECOLAB INC 1,047,236 119,783 3.36%
8 IMAX CORP 3,323,595 118,121 3.31%
9 STERICYCLE INC 930,638 112,235 3.15%
10 MARKEL CORP 121,059 106,937 3.00%
11 ROPER TECHNOLOGIES INC 558,145 105,930 2.97%
12 FASTENAL CO 2,591,876 105,800 2.97%
13 INTUITIVE SURGICAL INC 186,709 101,973 2.86%
14 VERISK ANALYTICS INC 1,313,719 100,999 2.83%
15 WAGEWORKS INC COM 2,171,589 98,525 2.76%
16 CARMAX INC 1,817,442 98,087 2.75%
17 SIGNET JEWELERS LIMITED 711,819 88,045 2.47%
18 WASTE CONNECTIONS INC COM 1,532,044 86,285 2.42%
19 COSTAR GROUP 399,075 82,485 2.31%
20 AMERICAN TOWER CORP NEW 838,260 81,269 2.28%
21 CELGENE CORP 646,609 77,438 2.17%
22 ALPHABET INC. CLASS C 98,916 75,065 2.11%
23 DISCOVER FINL SVCS 1,377,294 73,851 2.07%
24 HEALTHCARE SVCS GRP INC 2,023,170 70,548 1.98%
25 S&P GLOBAL INC 687,411 67,765 1.90%
26 TRIMBLE INC 3,124,266 67,016 1.88%
27 TRANSDIGM GROUP INC 278,013 63,512 1.78%
28 PRA GROUP INC 1,738,730 60,317 1.69%
29 MASTERCARD INCORPORATED 600,929 58,506 1.64%
30 EXAMWORKS GROUP INC COM 2,176,609 57,898 1.62%
31 ENVESTNET INC 1,898,641 56,674 1.59%
32 BLACKBAUD INC 695,302 45,793 1.28%
33 TYLER TECHNOLOGIES INC 249,829 43,550 1.22%
34 QUALCOMM INC 730,826 36,530 1.02%
35 BIOGEN INC 116,729 35,760 1.00%
36 EXPONENT INC 646,158 32,276 0.91%
37 FINANCIAL ENGINES INC 916,856 30,871 0.87%
38 CHIPOTLE MEXICAN GRILL INC 42,203 20,251 0.57%
39 PROCTER AND GAMBLE CO 230,107 18,273 0.51%
40 O REILLY AUTOMOTIVE INC NEW 72,032 18,254 0.51%
41 BIO TECHNE CORP 202,505 18,225 0.51%
42 ILLUMINA INC 90,023 17,279 0.48%
43 AAC HLDGS INC 868,785 16,559 0.46%
44 SCHLUMBERGER LTD 206,855 14,428 0.40%
45 INTEL CORP 396,399 13,656 0.38%
46 PRICE T ROWE GROUP INC 162,029 11,583 0.32%
47 RANGE RES CORP 436,983 10,754 0.30%
48 JOHNSON & JOHNSON 99,670 10,238 0.29%
49 POTASH CORP SASK INC 524,319 8,976 0.25%
50 IDEXX LAB 120,278 8,771 0.25%
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