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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)
Portfolio Summary: 169 holdings with a total value of $3,565,740,000.
#
Name
Shares
Value ($)
%
Options
Notes
51 QUALYS INC 238,411 7,889,000 0.22%
52 SBA COMMUNICATIONS CORP 73,450 7,717,000 0.22%
53 FISERV INC 66,968 6,125,000 0.17%
54 CROWN CASTLE INTL CORP NEW 69,333 5,994,000 0.17%
55 3-D SYS CORP DEL 633,960 5,509,000 0.15%
56 ATRION CORP 10,621 4,049,000 0.11%
57 GENERAL ELECTRIC CO 126,680 3,946,000 0.11%
58 COMCAST CORP NEW 68,335 3,856,000 0.11%
59 HCP INC 94,382 3,609,000 0.10%
60 MICROSOFT CORP 60,671 3,366,000 0.09%
61 ELLIE MAE INCORPORATED 54,872 3,305,000 0.09%
62 PAYCHEX INC 62,200 3,290,000 0.09%
63 BERKSHIRE HATHAWAY INC DEL 23,132 3,054,000 0.09%
64 BERKLEY W R CORP 52,928 2,898,000 0.08%
65 VANGUARD INTL EQUITY INDEX F 60,681 2,634,000 0.07%
66 CORE LABORATORIES N V 23,830 2,591,000 0.07%
67 PNC FINL SVCS GROUP INC 26,062 2,484,000 0.07%
68 LABORATORY CORP AMER HLDGS 18,653 2,306,000 0.06%
69 VENTAS INC 36,742 2,073,000 0.06%
70 CISCO SYS INC 70,571 1,916,000 0.05%
71 AUTOMATIC DATA PROCESSING IN 22,306 1,890,000 0.05%
72 CAPITAL ONE FINL CORP 25,662 1,852,000 0.05%
73 EXXON MOBIL CORP 22,002 1,715,000 0.05%
74 EXPRESS SCRIPTS HLDG CO 18,176 1,589,000 0.04%
75 INTERNATIONAL BUSINESS MACHS 10,152 1,397,000 0.04%
76 US BANCORP DEL 32,507 1,387,000 0.04%
77 BERKSHIRE HATHAWAY INC DEL 7 1,385,000 0.04%
78 MIDDLEBY CORP 12,230 1,319,000 0.04%
79 MERCK & CO INC 24,387 1,288,000 0.04%
80 COCA COLA CO 28,214 1,212,000 0.03%
81 CANADIAN NATL RY CO 20,000 1,118,000 0.03%
82 EQT CORP 20,668 1,077,000 0.03%
83 PFIZER INC 33,373 1,077,000 0.03%
84 MCCORMICK & CO INC 12,000 1,027,000 0.03%
85 DISNEY WALT CO 9,684 1,018,000 0.03%
86 APPLE INC 9,565 1,007,000 0.03%
87 DOUGLAS DYNAMICS INC 47,343 998,000 0.03%
88 VANGUARD SPECIALIZED FUNDS 12,555 976,000 0.03%
89 FORTINET INC 30,830 961,000 0.03%
90 CHEVRON CORP NEW 9,546 859,000 0.02%
91 Teladoc, Inc. 47,060 845,000 0.02%
92 WSFS FINL CORPORATION 25,517 826,000 0.02%
93 Duluth Holdings Inc Cl B 56,279 821,000 0.02%
94 TANGOE INC COM DELETED 97,131 815,000 0.02%
95 MONRO MUFFLER BRAKE INC 12,203 808,000 0.02%
96 WATSCO INC 6,700 785,000 0.02%
97 VANGUARD INDEX FDS 8,530 680,000 0.02%
98 COLGATE PALMOLIVE CO 10,055 670,000 0.02%
99 3M CO 4,325 652,000 0.02%
100 DEALERTRACK TECHNOLOGIES INC 10,000 632,000 0.02%
Page 2 of 4

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0000934999-16-000018, filed 2016.02.12).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.