DF DENT & CO INC Q3 2017 Filing

Filed November 15, 2017

Portfolio Value

$3.9T

Holdings

188

Report Date

Q3 2017

Filing Type

13F-HR

All Holdings (188 positions)

#StockSharesValue% PortfolioType
1
RHT1EURRED HAT INC
1,515,714$168.0B4.36%
2
ROPROPER TECHNOLOGIES INC
674,931$164.3B4.26%
3
ECLECOLAB INC
1,200,905$154.4B4.01%
4
AKXANSYS INC
1,217,784$149.5B3.88%
5
VVISA INC CL A
1,374,489$144.7B3.75%
6
SEICSEI INVESTMENTS CO
2,306,183$140.8B3.65%
7
ISRGINTUITIVE SURGICAL INC
131,539$137.6B3.57%
8
MCOMOODYS CORP
961,489$133.8B3.47%
9
VRSKVERISK ANALYTICS INC
1,438,792$119.7B3.11%
10
CELGCELGENE CORP
819,793$119.5B3.10%
11
KMXCARMAX INC
1,539,022$116.7B3.03%
12
TYLTYLER TECHNOLOGIES INC
600,129$104.6B2.71%
13
WAGEWORKS INC
1,690,718$102.6B2.66%
14
WCNWASTE CONNECTIONS INC
1,459,368$102.1B2.65%
15
MKLMARKEL CORP HLDG CO
92,867$99.2B2.57%
16
ILMNILLUMINA INC
486,530$96.9B2.51%
17
TRMBTRIMBLE INC
2,437,973$95.7B2.48%
18
LKQ1LKQ CORP
2,597,715$93.5B2.43%
19
AMTAMERICAN TOWER REIT INC
659,016$90.1B2.34%
20
FASTFASTENAL CO
1,963,207$89.5B2.32%
21
CSGPCOSTAR GROUP INC
331,040$88.8B2.30%
22
GOOGALPHABET INC CLASS C
92,156$88.4B2.29%
23
SPGIS & P GLOBAL INC
544,415$85.1B2.21%
24
HCSGHEALTHCARE SERVICES GROUP INC
1,500,765$81.0B2.10%
25
BLBLACKLINE
2,270,403$77.5B2.01%
26
WSOWATSCO INC COM
430,125$69.3B1.80%
27
MAMASTERCARD INC-CLASS A
482,152$68.1B1.77%
28
ENVUSDENVESTNET INC
1,320,368$67.3B1.75%
29
STERIS PLC
753,492$66.6B1.73%
30
PROPROS HOLDINGS INC
2,702,800$65.2B1.69%
31
T7DTRANSDIGM GROUP INC
237,330$60.7B1.57%
32
BLKBBLACKBAUD INC
678,997$59.6B1.55%
33
AMZNAMAZON.COM INC
57,510$55.3B1.43%
34
DFSEURDISCOVER FINANCIAL SERVICES (U
770,490$49.7B1.29%
35
TECHBIO-TECHNE CORP
395,727$47.8B1.24%
36
CBRECBRE GROUP INC
1,043,847$39.5B1.03%
37
EXPOEXPONENT INC
408,061$30.2B0.78%
38
SBACSBA COMMUNICATIONS CORP CL A
190,466$27.4B0.71%
39
QCOMQUALCOMM INC
382,740$19.8B0.51%
40
IDXXIDEXX LABORATORIES INC
122,429$19.0B0.49%
41
IMAIMAX CORP
699,911$15.9B0.41%
42
PGPROCTER & GAMBLE CO
168,203$15.3B0.40%
43
TROWPRICE T ROWE GROUP INC
142,264$12.9B0.33%
44
ORLYO REILLY AUTOMOTIVE INC
58,940$12.7B0.33%
45
INTCINTEL CORP
324,149$12.3B0.32%
46
GWRUSDGENESEE AND WYO INC CL A
148,965$11.0B0.29%
47
JNJJOHNSON AND JOHNSON COM
84,747$11.0B0.29%
48
AAC HOLDINGS INC
1,037,024$10.3B0.27%
49
FISVFISERV INC
67,553$8.7B0.23%
50
CCICROWN CASTLE REIT INC SHS
66,363$6.6B0.17%
51
SLBSCHLUMBERGER LTD
91,173$6.4B0.16%
52
ATRIUSDATRION CORPORATION
9,375$6.3B0.16%
53
VOOVANGUARD INDEX FDS FORMERLY VA
22,989$5.3B0.14%
54
MSFTMICROSOFT CORP
55,354$4.1B0.11%
55
ELLIE MAE INC
50,017$4.1B0.11%
56
CMCSACOMCAST CORP NEW CL A
106,406$4.1B0.11%
57
BRK/BBERKSHIRE HATHAWAYINC DEL CL
21,587$4.0B0.10%
58
DC4DEXCOM INC
75,856$3.7B0.10%
59
VEUVANGUARD FTSE ALL WORLD EX US
66,541$3.5B0.09%
60
PAYXPAYCHEX INC
55,511$3.3B0.09%
61
WRBBERKLEY W R CORP
47,308$3.2B0.08%
62
GEGENERAL ELECTRIC
116,422$2.8B0.07%
63
LABORATORY CORP AMER HLDGS COM
17,837$2.7B0.07%
64
MIDDMIDDLEBY CORP
20,571$2.6B0.07%
65
PLOWDOUGLAS DYNAMICS INC
63,511$2.5B0.06%
66
PNCPNC FINCL SERVICES GROUP
17,888$2.4B0.06%
67
CISCO SYSTEMS INC COM
66,196$2.2B0.06%
68
COFCAPITAL ONE FINL CORP COM
24,204$2.0B0.05%
69
VTRVENTAS INC REIT
29,432$1.9B0.05%
70
WSFSWSFS FINANCIAL CORP
36,478$1.8B0.05%
71
OGM1COGENT COMMUNICATIONS
35,481$1.7B0.05%
72
TDOCTELADOC INC
51,293$1.7B0.04%
73
HEIHEICO CORP NEW CL A
22,056$1.7B0.04%
74
CNRCANADIAN NATL RY CO COM
20,000$1.7B0.04%
75
ADPAUTOMATIC DATA PROC
15,138$1.7B0.04%
76
BRK-BBERKSHIRE HATHAWAY INC DELAWA
6$1.6B0.04%
77
USBU S BANCORP
30,560$1.6B0.04%
78
KOCOCA COLA COM
36,263$1.6B0.04%
79
XOMEXXON MOBIL CORP COM
19,805$1.6B0.04%
80
MLABMESA LABS INC
10,536$1.6B0.04%
81
MRKMERCK AND CO INC SHS
24,011$1.5B0.04%
82
EWEDWARDS LIFESCIENCES
13,431$1.5B0.04%
83
MNROMONRO INC
25,974$1.5B0.04%
84
HCP INC
51,271$1.4B0.04%
85
AAPLAPPLE INC
9,103$1.4B0.04%
86
MMM3M COMPANY
6,680$1.4B0.04%
87
CLGXCORELOGIC INC
30,206$1.4B0.04%
88
GWREGUIDEWIRE SOFTWARE INC
17,925$1.4B0.04%
89
MCXMCCORMICK & CO INC COM NON VTG
13,139$1.3B0.03%
90
BECNUSDBEACON ROOFING SUPPLY INC
24,599$1.3B0.03%
91
LADLITHIA MOTORS INC CL A
9,765$1.2B0.03%
92
VIGVANGUARD DIVIDEND APPREC
11,903$1.1B0.03%
93
DISDISNEY (WALT) CO COM STK
10,826$1.1B0.03%
94
PFEPFIZER INC
29,567$1.1B0.03%
95
IJHISHARES CORE S&P MID CAP ETF
5,834$1.0B0.03%
96
IBMIBM CORP
7,070$1.0B0.03%
97
EXPRESS SCRIPTS HLDG
15,941$1.0B0.03%
98
BFAMBRIGHT HORIZONS FAM SOL IN DEL
11,215$967.0M0.03%
99
ALPHABET INC. CLASS A
971$945.0M0.02%
100
VWOVANGUARD FTSE EMERGING MARK ET
20,738$904.0M0.02%
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