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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 (2015Q3)
Original 13F HR (0000934999-15-000015) filed in 2015.11.19
#
Name
Shares
Value ($)
%
Options
Notes
1 ANSYS 1,892,439 166,800 4.73%
2 LKQ CORP 5,254,067 149,005 4.22%
3 SEI INVESTMENTS CO 2,954,782 142,509 4.04%
4 RED HAT INC 1,938,256 139,322 3.95%
5 MOODYS CORP 1,243,732 122,134 3.46%
6 VISA INC 1,673,671 116,588 3.30%
7 ECOLAB INC 1,061,608 116,480 3.30%
8 IMAX CORP 3,363,297 113,646 3.22%
9 VERISK ANALYTICS INC 1,486,423 109,862 3.11%
10 STERICYCLE INC 782,195 108,968 3.09%
11 MARKEL CORP 132,612 106,336 3.01%
12 PRA GROUP INC 1,907,712 100,956 2.86%
13 WAGEWORKS INC COM 2,200,396 99,194 2.81%
14 SIGNET JEWELERS LIMITED 719,393 97,931 2.78%
15 FASTENAL CO 2,635,427 96,483 2.73%
16 CARMAX INC 1,590,411 94,343 2.67%
17 ROPER TECHNOLOGIES INC 547,273 85,758 2.43%
18 WASTE CONNECTIONS INC COM 1,726,047 83,851 2.38%
19 HEALTHCARE SVCS GRP INC 2,453,960 82,698 2.34%
20 INTUITIVE SURGICAL INC 174,636 80,259 2.27%
21 AMERICAN TOWER CORP NEW 837,502 73,683 2.09%
22 DISCOVER FINL SVCS 1,397,088 72,635 2.06%
23 COSTAR GROUP 416,322 72,049 2.04%
24 CELGENE CORP 660,016 71,394 2.02%
25 S&P GLOBAL INC 794,243 68,702 1.95%
26 EXAMWORKS GROUP INC COM 2,276,853 66,575 1.89%
27 ALPHABET INC. CLASS C 100,557 61,181 1.73%
28 BIOGEN INC 203,501 59,384 1.68%
29 MASTERCARD INCORPORATED 610,778 55,043 1.56%
30 TRIMBLE INC 2,876,804 47,237 1.34%
31 CHIPOTLE MEXICAN GRILL INC 65,233 46,984 1.33%
32 TYLER TECHNOLOGIES INC 291,197 43,479 1.23%
33 QUALCOMM INC 792,804 42,597 1.21%
34 BLACKBAUD INC 713,564 40,045 1.13%
35 ENVESTNET INC 1,325,313 39,720 1.13%
36 EXPONENT INC 851,778 37,955 1.08%
37 TRANSDIGM GROUP INC 175,195 37,213 1.05%
38 FINANCIAL ENGINES INC 1,169,203 34,456 0.98%
39 TANGOE INC COM DELETED 3,650,741 26,285 0.74%
40 RANGE RES CORP 813,148 26,118 0.74%
41 POTASH CORP SASK INC 1,003,880 20,630 0.58%
42 AAC HLDGS INC 835,706 18,594 0.53%
43 BIO TECHNE CORP 197,340 18,246 0.52%
44 O REILLY AUTOMOTIVE INC NEW 71,239 17,810 0.50%
45 PROCTER AND GAMBLE CO 233,432 16,793 0.48%
46 ILLUMINA INC 92,538 16,270 0.46%
47 SCHLUMBERGER LTD 206,705 14,256 0.40%
48 INTEL CORP 418,849 12,624 0.36%
49 PRICE T ROWE GROUP INC 166,219 11,552 0.33%
50 JOHNSON & JOHNSON 103,445 9,657 0.27%
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