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Institutional

DF DENT & CO INC

CIK 0000934999
$5.22B
Reported AUM
262
Positions
Q1 2026
Period
2026-05-15
Filed

The Brief · DF DENT & CO INC · Q1 2026

AI · grounded in 13F

DF DENT & CO INC increased its position in BROADCOM INC by 12,650.29%. The fund also established a new position in SAIA INC valued at $22.77M and grew its holding in APH by 626.97%. Conversely, the fund trimmed several holdings, most notably reducing its stake in VERALTO CORP by 53.81% and TMO by 47.81%.

Portfolio · Q1 2026

ALPHABEVISAAMZNHEICOVMCMASTERCTDGWASTEECLMCOINTUITIFASTOther$3.40BDI

Top holdings

#StockIssuerPriceDay %1Y Gr.5Y Gr.Value% of bookΔ shares (QoQ)Status
1ALPHABET INC CL C$217.1M4.16%HELD
2VISA INC CL A$186.8M3.58%HELD
3AMZNAMAZON.COM INC$226.65-1.82%5.54%30.60%$165.9M3.18%HELD
4HEI/AHEICO CORP CL A$164.0M3.14%HELD
5VMCVULCAN MATERIALS CO$283.92-1.56%4.76%59.73%$148.0M2.83%HELD
6MASTERCARD INC CL A$143.5M2.75%HELD
7TDGTRANSDIGM GROUP INC$1264.60-3.32%-14.73%150.47%$142.3M2.72%HELD
8WASTE CONNECTIONS INC$139.6M2.67%HELD
9ECLECOLAB INC$283.700.28%9.54%32.71%$138.0M2.64%HELD
10MCOMOODYS CORP$483.24-0.20%-2.79%32.16%$128.9M2.47%HELD
11INTUITIVE SURGICAL INC$126.9M2.43%HELD
12FASTFASTENAL CO$47.78-0.67%7.43%93.00%$123.8M2.37%HELD
13MSFTMICROSOFT CORP$390.54-0.71%-24.89%34.54%$108.6M2.08%HELD
14BIO-TECHNE CORP$106.8M2.04%HELD
15MPWRMONOLITHIC PWR SYS INC COM$1248.76-2.59%60.06%161.66%$96.8M1.85%HELD
16PERIMETER SOLUTIONS INC$96.0M1.84%HELD
17GUIDEWIRE SOFTWARE INC$92.5M1.77%HELD
18CBRE GROUP INC$89.1M1.71%HELD
19KINSALE CAPITAL GROUP INC.$85.1M1.63%HELD
20DHRDANAHER CORP$196.49-1.29%0.43%-29.94%$81.8M1.57%HELD
21VEEVVEEVA SYSTEMS, INC.$207.913.33%-28.49%-39.39%$81.0M1.55%HELD
22CDNSCADENCE DESIGN SYSTEMS INC.$332.76-3.47%-4.33%108.89%$80.0M1.53%HELD
23ASML HOLDINGS N.V.$79.9M1.53%HELD
24MSCI INC COM$65.5M1.25%HELD
25S & P GLOBAL INC$64.8M1.24%HELD
26COSTAR GROUP INC$64.8M1.24%HELD
27BROADCOM INC$60.5M1.16%HELD
28AAPLAPPLE INC$338.19-0.56%67.77%128.17%$59.4M1.14%HELD
29TYLTYLER TECHNOLOGIES INC$333.500.04%-40.37%-28.60%$58.1M1.11%HELD
30MSIMOTOROLA SOLUTIONS INC.$434.20-1.39%1.64%90.67%$55.7M1.07%HELD
31UBER TECHNOLOGIES, INC.$54.3M1.04%HELD
32MANHMANHATTAN ASSOCS INC COM$204.0221.32%$51.7M0.99%HELD
33NETFLIX INC$50.9M0.98%HELD
34MKLMARKEL GROUP INC$2015.00-1.19%$50.8M0.97%HELD
35APPFOLIO, INC$50.6M0.97%HELD
36PROCORE TECHNOLOGIES INC$49.0M0.94%HELD
37VERALTO CORP$46.7M0.89%HELD
38TMOTHERMO FISHER SCIENTIFIC INC$576.460.01%$46.2M0.88%HELD
39NOVANTA INC COM NPV$45.7M0.88%HELD
40O REILLY AUTOMOTIVE$43.6M0.83%HELD
41RGENREPLIGEN CORPORATION$141.23-2.83%$43.0M0.82%HELD
42RBC BEARINGS INC$39.9M0.76%HELD
43CPRTCOPART INC COM$30.820.42%$39.3M0.75%HELD
44SERVICENOW INC$36.5M0.70%HELD
45MEDPACE HOLDINGS, INC.$35.9M0.69%HELD
46LBLANDBRIDGE COMPANY LLC CL A$74.91-0.15%$34.4M0.66%HELD
47SHWSHERWIN-WILLIAMS CO$343.88-2.93%$34.0M0.65%HELD
48GOOSEHEAD INSURANCE, INC.$33.4M0.64%HELD
49ODFLOLD DOMINION FGHT LINES INC CO$222.79-1.54%$32.9M0.63%HELD
50FNDFLOOR & DECOR HOLDINGS, INC.$55.76-1.85%$32.4M0.62%HELD
51SITEONE LANDSCAPE SUPPLY, INC.$31.4M0.60%HELD
52WSTWEST PHARMACEUTICALS, INC.$337.460.14%$30.2M0.58%HELD
53HAYWHAYWARD HOLDINGS INC$15.250.93%$28.8M0.55%HELD
54QCOMQUALCOMM INC$155.68-4.42%$27.2M0.52%HELD
55APHAMPHENOL CORP NEW CL A$150.314.49%$26.9M0.52%HELD
56CWSTCASELLA WASTE SYSTEMS INC CL A$90.48-0.68%$26.0M0.50%HELD
57PTC INC$25.7M0.49%HELD
58CSWCSW INDUSTRIALS INC$272.61-8.80%$25.2M0.48%HELD
59MTDMETTLER TOLEDO INTL$1388.330.00%$24.8M0.48%HELD
60APPLIED INDL TECHNOLOGIES INC$23.9M0.46%HELD
61CORE & MAIN INC CL A$23.4M0.45%HELD
62BMIBADGER METER INC COM$133.54-0.77%$23.0M0.44%HELD
63FSSFEDERAL SIGNAL CORP$111.86-5.04%$22.9M0.44%HELD
64SAIA INC$22.8M0.44%HELD
65AMERICAN TOWER CORP$22.8M0.44%HELD
66IDEXX LABS INC$22.5M0.43%HELD
67CROWDSTRIKE HOLDINGS, INC.$21.9M0.42%HELD
68ESEESCO TECHNOLOGIES INC$300.07-4.95%$20.6M0.39%HELD
69VERISK ANALYTICS INC$20.4M0.39%HELD
70BAHBOOZ ALLEN HAMILTON HOLDING CO$70.17-4.13%$20.3M0.39%HELD
71ONTOONTO INNOVATION INC$218.31-9.75%$19.2M0.37%HELD
72PGPROCTER & GAMBLE CO$146.10-1.87%$18.7M0.36%HELD
73LMATLEMAITRE VASCULAR$103.571.24%$18.1M0.35%HELD
74MORNMORNINGSTAR INC$198.662.34%$17.3M0.33%HELD
75ENTEGRIS INC$16.7M0.32%HELD
76HLNEHAMILTON LANE INC$88.69-0.93%$15.6M0.30%HELD
77BROBROWN & BROWN$74.871.66%$15.2M0.29%HELD
78MCHPMICROCHIP TECH INC$71.37-5.73%$14.9M0.29%HELD
79COSTCO WHOLESALE CO$14.5M0.28%HELD
80VSECVSE CORP$184.98-7.20%$14.2M0.27%HELD
81EAGLE MATERIALS INC$14.2M0.27%HELD
82KADANT INC$13.6M0.26%HELD
83AGILYSYS INC$13.2M0.25%HELD
84DSGXTHE DESCARTES SYSTEMS GROUP IN$78.003.19%$13.1M0.25%HELD
85JNJJOHNSON & JOHNSON$265.53-0.45%$13.1M0.25%HELD
86ALRMALARM.COM$55.692.16%$13.0M0.25%HELD
87ENSIGN GROUP INC COM$12.9M0.25%HELD
88ROPROPER TECHNOLOGIES INC$408.074.39%$12.6M0.24%HELD
89SSDSIMPSON MANUFACTURING CO$189.48-4.44%$11.8M0.23%HELD
90PDFSPDF SOLUTIONS INC$41.17-7.67%$11.5M0.22%HELD
91SYKSTRYKER CORP$352.251.63%$11.4M0.22%HELD
92MUSAMURPHY USA INC COM$616.232.40%$11.4M0.22%HELD
93HEALTHEQUITY, INC.$11.2M0.21%HELD
94WARBY PARKER INC CL A$11.1M0.21%HELD
95ALPHABET INC. CLASS A$10.6M0.20%HELD
96UTZUTZ BRANDS INC.$14.06-0.14%$10.5M0.20%HELD
97SNPSSYNOPSYS INC$373.69-2.64%$10.5M0.20%HELD
98DOUGLAS DYNAMICS INC$10.4M0.20%HELD
99BRK/BBERKSHIRE HATHAWAY INC CL B$9.9M0.19%HELD
100RMBSRAMBUS INC$82.81-5.63%$8.8M0.17%HELD
101J P MORGAN CHASE & CO$8.7M0.17%HELD
102BRK/ABERKSHIRE HATHAWAY INC DELAWA$8.6M0.17%HELD
103VOOVANGUARD S&P 500 ETF$670.63-1.52%$8.6M0.16%HELD
104WSOWATSCO INC$320.02-12.92%$8.3M0.16%HELD
105TEAMATLASSIAN CORPORATION CL A$104.284.30%$7.5M0.14%HELD
106EXPONENT INC$7.5M0.14%HELD
107MARKETAXESS HLDGS INC COM$6.8M0.13%HELD
108CAPITAL ONE FINL CORP COM$5.9M0.11%HELD
109ABBVIE INC SHS$5.6M0.11%HELD
110T ROWE PRICE GROUP INC$5.2M0.10%HELD
111VEUVANGUARD FTSE ALL WORLD EX US$80.63-1.13%$4.3M0.08%HELD
112LOWLOWE'S COMPANIES INC$215.68-1.17%$4.0M0.08%HELD
113CISCO SYSTEMS INC$3.9M0.07%HELD
114WINGWINGSTOP INC.$139.453.40%$3.6M0.07%HELD
115ADPAUTO DATA PROCESSING$273.373.48%$3.5M0.07%HELD
116INTUINTUIT INC.$333.136.43%$3.3M0.06%HELD
117HDHOME DEPOT INC$338.27-1.80%$3.0M0.06%HELD
118CAMECO CORP$3.0M0.06%HELD
119LLYLILLY ELI & CO$1210.02-0.87%$2.9M0.05%HELD
120SHOPIFY INC.$2.8M0.05%HELD
121EQT CORP$2.8M0.05%HELD
122KOCOCA COLA COM$89.080.92%$2.8M0.05%HELD
123MERCK & CO. INC.$2.7M0.05%HELD
124PAYXPAYCHEX INC$122.132.74%$2.7M0.05%HELD
125ABTABBOTT LABORATORIES$108.000.68%$2.6M0.05%HELD
126GWWGRAINGER W W INC COM$1358.92-2.86%$2.6M0.05%HELD
127FNVFRANCO-NEVADA CORPORATION$214.371.79%$2.4M0.05%HELD
128RANGE RESOURCES CORP DEL$2.4M0.05%HELD
129WABWABTEC$291.76-4.59%$2.4M0.05%HELD
130EFAISHARES MSCI EAFE ETF$103.37-0.50%$2.3M0.04%HELD
131WPMWHEATON PRECIOUS METALS CORP$109.46-0.11%$2.3M0.04%HELD
132META PLATFORMS INC CL A$2.2M0.04%HELD
133CROWN CASTLE INC$2.2M0.04%HELD
134EXXON MOBIL CORP$2.1M0.04%HELD
135PEPPEPSICO INC$143.500.45%$2.0M0.04%HELD
136CVXCHEVRON CORP$191.862.28%$1.8M0.03%HELD
137FISVFISERV INC COM$55.632.62%$1.7M0.03%HELD
138ITWILLINOIS TOOL WORKS$292.45-0.92%$1.6M0.03%HELD
139DXCMDEXCOM INC$75.140.39%$1.6M0.03%HELD
140AXPAMERICAN EXPRESS CO$331.50-1.52%$1.6M0.03%HELD
141EDWARDS LIFESCIENCES$1.5M0.03%HELD
142CNICANADIAN NATL RAILWY F$129.840.25%$1.5M0.03%HELD
143ADIANALOG DEVICES INC$353.37-3.41%$1.5M0.03%HELD
144MCDMC DONALDS CORP$271.52-0.55%$1.5M0.03%HELD
145CHUBB LTD$1.5M0.03%HELD
146VYMVANGUARD HIGH DIVIDEND YIELD E$161.67-1.32%$1.5M0.03%HELD
147TSCOTRACTOR SUPPLY COMP$31.00-1.46%$1.4M0.03%HELD
148TJXTJX COMPANIES INC$161.630.52%$1.4M0.03%HELD
149NSCNORFOLK SOUTHERN CO$335.74-0.91%$1.3M0.02%HELD
150EPDENTERPRISE PRODS PART LP$38.670.10%$1.3M0.02%HELD
151BHPBHP GROUP LTD ADR$83.11-0.81%$1.3M0.02%HELD
152EMREMERSON ELECTRIC CO$145.73-4.01%$1.3M0.02%HELD
153PFEPFIZER INC$25.15-0.40%$1.2M0.02%HELD
154VIGVANGUARD DIVIDEND APPREC$238.56-1.32%$1.1M0.02%HELD
155ORACLE CORP$1.1M0.02%HELD
156DKSDICK'S SPORTING GOODS INC.$205.99-2.55%$1.1M0.02%HELD
157VWOVANGUARD FTSE EMERGING MARKETS$56.92-1.42%$1.1M0.02%HELD
158MKCMCCORMICK & CO INC COM NON VTG$51.990.89%$1.1M0.02%HELD
159NVIDIA CORP$1.1M0.02%HELD
160INTCINTEL CORP$81.88-5.12%$1.1M0.02%HELD
161DISWALT DISNEY CO$98.48-0.41%$1.1M0.02%HELD
162NEXTERA ENERGY INC SHS$1.0M0.02%HELD
163WSMWILLIAMS SONOMA INC COM$233.81-1.06%$1.0M0.02%HELD
164TERRENO REALTY CORP$1.0M0.02%HELD
165CONSTELLATION SOFTWARE F$1.0M0.02%HELD
166CLCOLGATE-PALMOLIVE CO$93.490.82%$976K0.02%HELD
167IBMIBM CORP$226.44-0.49%$911K0.02%HELD
168W E C ENERGY GROUP INC$895K0.02%HELD
169HONHONEYWELL INTL INC$892K0.02%HELD
170KLACKLA CORPORATION$892K0.02%HELD
171LHLABCORP HOLDINGS INC$883K0.02%HELD
172WRBBERKLEY W R CORP$864K0.02%HELD
173MDLZMONDELEZ INTL INC$856K0.02%HELD
174ISHARES CORE MSCI EAFE ETF$808K0.02%HELD
175MPMP MATERIALS CORP COM CL A$800K0.02%HELD
176NOVARTIS AG F SPONSORED ADR 1$781K0.01%HELD
177RTX CORP$774K0.01%HELD
178LINDE PLC SHS$748K0.01%HELD
179VTIVANGUARD TOTAL STK MKT ETF$743K0.01%HELD
180WMTWALMART INC$740K0.01%HELD
181PGRPROGRESSIVE CORPORATION$739K0.01%HELD
182SBUXSTARBUCKS CORP COM$733K0.01%HELD
183QUANTA SVCS INC COM$729K0.01%HELD
1843M COMPANY$722K0.01%HELD
185NSRGYNESTLE S A F SPONSORED ADR 1 A$713K0.01%HELD
186UNITEDHEALTH GRP INC$681K0.01%HELD
187AMGNAMGEN INC.$680K0.01%HELD
188SPDR GOLD TRUST$673K0.01%HELD
189EAST WEST BANCORP INC$651K0.01%HELD
190SBA COMMUNICATIONS CORP CL A$634K0.01%HELD
191MSMORGAN STANLEY$634K0.01%HELD
192BLACKSTONE GROUP ORD SHS CLASS$632K0.01%HELD
193ISHGISHARES 1-3 YEAR INTERNATIONAL$623K0.01%HELD
194M & T BANK CORP$617K0.01%HELD
195CATCATERPILLAR INC DEL COM$604K0.01%HELD
196SPDR BLOOMBERG SHORT TERM INTE$600K0.01%HELD
197CANADIAN PACIFIC KANSAS CITY C$559K0.01%HELD
198USBU S BANCORP$558K0.01%HELD
199LVMUYLVMH MOET HENNESSY LOU VUITTON$537K0.01%HELD
200POOL CORPORATION$527K0.01%HELD
201EATON CORP PLC SHS$525K0.01%HELD
202McKESSON CORP$500K0.01%HELD
203HUBBHUBBELL INC$495K0.01%HELD
204VNQVANGUARD REIT ETF$490K0.01%HELD
205MRSHMARSH COM$488K0.01%HELD
206PMPHILIP MORRIS INTL$478K0.01%HELD
207COMCAST CORP NEW CL A$476K0.01%HELD
208SYYSYSCO CORP COM$469K0.01%HELD
209WSO/BWATSCO CLASS B$449K0.01%HELD
210PNCPNC FINL SERVICES$441K0.01%HELD
211CONOCOPHILLIPS$436K0.01%HELD
212BABOEING CO$433K0.01%HELD
213OKEONEOK INC$432K0.01%HELD
214GOLDMAN SACHS GROUP$428K0.01%HELD
215NXP SEMICONDUCTORS$416K0.01%HELD
216WMT2WELLS FARGO BK N A$410K0.01%HELD
217VBVANGUARD INDEX FDS SMALL CP ET$409K0.01%HELD
218KEYSIGHT TECHNOLOGIES INC$402K0.01%HELD
219MIDDMIDDLEBY CORP$402K0.01%HELD
220BOOKING HOLDING, INC.$400K0.01%HELD
221VANGUARD INFO TECHNOLOGY INDEX$399K0.01%HELD
222EMCOR GROUP INC$399K0.01%HELD
223APDAIR PROD & CHEMICALS$398K0.01%HELD
224ISHARES MSCI EMERGING MARKETS$388K0.01%HELD
225VENTAS INC REIT$387K0.01%HELD
226LIILENNOX INTERNATIONAL INC.$373K0.01%HELD
227W.P. CAREY INC. REIT$371K0.01%HELD
228BACBANK AMER CORP COM$371K0.01%HELD
229ACCENTURE PLC F CLASS A$371K0.01%HELD
230VERIZON COMMUNICATN$370K0.01%HELD
231WISDOMTREE TR INDIA ERNGS FD$367K0.01%HELD
232RPMRPM INTERNATIONAL INC$363K0.01%HELD
233EOG RES INC COM$361K0.01%HELD
234IYWISHARES TR U.S. TECH ETF$347K0.01%HELD
235ILMNILLUMINA INC$331K0.01%HELD
236VANGUARD HEALTH CARE$328K0.01%HELD
237TSMTAIWAN SEMICONDUCTOR MFG LTD A$326K0.01%HELD
238SOSOUTHERN COMPANY$322K0.01%HELD
239CHICALAMOS CONV OPP AND INC FD SH$316K0.01%HELD
240NEMNEWMONT GOLDCORP CORP$315K0.01%HELD
241BMYBRISTOL-MYERS SQUIBB$310K0.01%HELD
242BPBP PLC$308K0.01%HELD
243PNWPINNACLE WEST CAP CORP$302K0.01%HELD
244SPDR FUND CONSUMER DISCRE SELE$291K0.01%HELD
245TRMBTRIMBLE INC$283K0.01%HELD
246SHBISHORE BANCSHARES, INC.$271K0.01%HELD
247ALLISON TRANSMISSION HLDGS INC$270K0.01%HELD
248STATE STREET SPDR S&P 500 ETF$264K0.01%HELD
249BDXBECTON DICKINSON&CO$263K0.01%HELD
250VEAVANGUARD FTSE DEVELOPED MARKET$259K0.00%HELD
251ALTRIA GROUP INC$256K0.00%HELD
252TECHNOLOGY SELECT SECTOR SPDR$254K0.00%HELD
253PROLOGIS INC.$254K0.00%HELD
254OTIS WORLDWIDE ORD SHS$244K0.00%HELD
255VOVANGUARD MID CAP ETF$229K0.00%HELD
256BOHBANK OF HAWAII CORP$225K0.00%HELD
257GEGE AEROSPACE$210K0.00%HELD
258NEOGNEOGEN CORP COM$204K0.00%HELD
259ALPS ALERIAN MLP ETF$201K0.00%HELD
260XFFCXFLAHERTY & CRUMRINE PFD SECS I$190K0.00%HELD
261GAMCO GLOBAL GOLD NAT RES & IN$125K0.00%HELD
262MERGENET SOLUTIONS INC COM$10K0.00%HELD

Source: SEC EDGAR · accession 0000934999-26-000002. 13F discloses long positions only — shorts, foreign equities, and options are excluded.