13F

Investor

DF DENT & CO INC

CIK 0000934999 · filed 2026-05-15 · SEC filing

13F book

$5.22B

Positions

262

19 new · 20 sold

Largest name

4.2%

Alphabet Inc

Est. mark

−$607.8M

Price effect on 243 names still held. Flow −$1.12B.
NameTickerSharesValueWeightEst. markChange
Alphabet Inc756.8K$217.1M4.2%−$20.4MCut−$41.8M
Visa Inc.V618K$186.8M3.6%−$30MCut−$49.2M
Amazon Com IncAMZN796.4K$165.9M3.2%−$18MCut−$36M
Heico Corp New777K$164M3.1%−$32.1MCut−$85.4M
Vulcan Matls Co543.6K$148M2.8%−$7.02MCut−$63.3M
Mastercard IncMA287.1K$143.5M2.7%−$20.4MCut−$38.2M
Transdigm Group IncTDG122.8K$142.3M2.7%−$21MCut−$56.9M
Waste Connections, Inc.WCN859.5K$139.6M2.7%−$11.1MCut−$42.9M
Ecolab Inc.ECL518.6K$138M2.6%$1.82MCut−$48.4M
Moodys Corp295.4K$128.9M2.5%−$22MCut−$50.9M
Intuitive Surgical IncISRG275.3K$126.9M2.4%−$29MCut−$46M
Fastenal CoFAST2.67M$123.8M2.4%$16.7MCut$7.41M
Microsoft CorpMSFT293.4K$108.6M2.1%−$33.3MCut−$46.4M
Bio-Techne CorpTECH2.04M$106.8M2.0%−$13.4MCut−$45.7M
Monolithic Pwr Sys Inc88.5K$96.8M1.9%$16.6MCut−$18.5M
Perimeter Solutions, Inc.PRM3.93M$96M1.8%−$7.89MAdded$26.2M
Guidewire Software, Inc.GWRE618.3K$92.5M1.8%−$23.3MAdded$1.45M
Cbre Group, Inc.CBRE657.5K$89.1M1.7%−$16.7MCut−$49.3M
Kinsale Cap Group Inc248.9K$85.1M1.6%−$12.3MCut−$38.4M
Danaher Corporation431.3K$81.8M1.6%−$17MCut−$29.4M
Veeva Sys Inc461.1K$81M1.6%−$21.9MCut−$51.8M
Cadence Design System Inc288K$80M1.5%−$10MCut−$32.1M
Asml Holding N V60.5K$79.9M1.5%$15.2MCut$4.09M
MSCI Inc.MSCI121.4K$65.5M1.3%−$4.12MAdded−$2.64M
S&P Global Inc.SPGI152.3K$64.8M1.2%−$14.8MCut−$61.5M
Costar Group, Inc.CSGP1.61M$64.8M1.2%−$43.2MCut−$70.2M
Broadcom Inc.AVGO195.5K$60.5M1.2%−$56.1KAdded$60M
Apple Inc.AAPL234.1K$59.4M1.1%−$4.23MCut−$9.41M
Tyler Technologies IncTYL169.7K$58.1M1.1%−$18.9MCut−$33.3M
Motorola Solutions, Inc.MSI128.4K$55.7M1.1%$4.61MAdded$20.8M
Uber Technologies, IncUBER755.6K$54.3M1.0%−$7.39MCut−$12.4M
Manhattan Associates IncMANH388.6K$51.7M1.0%−$15.6MCut−$27.4M
Netflix IncNFLX529.8K$50.9M1.0%$881KAdded$16.4M
Markel Group Inc.MKL26.5K$50.8M1.0%−$6.25MCut−$23M
Appfolio IncAPPF320.5K$50.6M1.0%−$24MCut−$42.8M
Procore Technologies, Inc.PCOR860.2K$49M0.9%−$13.5MCut−$34.3M
Veralto CorpVLTO528.3K$46.7M0.9%−$6MCut−$67.4M
Thermo Fisher Scientific Inc.TMO93.9K$46.2M0.9%−$8.26MCut−$58.1M
Novanta Inc386.9K$45.7M0.9%−$340.5KCut−$9.96M
Oreilly Automotive Inc471.9K$43.6M0.8%$519.1KCut−$955.8K
Repligen CorpRGEN365.1K$43M0.8%−$16.8MCut−$38.2M
Rbc Bearings IncRBC73.4K$39.9M0.8%$6.95MCut−$2.96M
Copart IncCPRT1.18M$39.3M0.8%−$6.94MAdded−$6.38M
ServiceNow, Inc.NOW349.6K$36.5M0.7%−$17MCut−$27.4M
Medpace Hldgs Inc74.8K$35.9M0.7%−$4.45MAdded$5.22M
Landbridge Company Llc497.8K$34.4M0.7%$8.81MAdded$12.9M
Sherwin Williams CoSHW106K$34M0.7%−$369KCut−$4.53M
Goosehead Ins Inc783.6K$33.4M0.6%−$24.3MCut−$43.5M
Old Dominion Freight Line In168.5K$32.9M0.6%$6.5MCut−$16.2M
Floor & Decor Hldgs Inc638K$32.4M0.6%−$6.44MCut−$17.2M
SiteOne Landscape Supply, Inc.SITE236.1K$31.4M0.6%$2.02MCut−$13M
West Pharmaceutical Svsc Inc120.6K$30.2M0.6%−$2.95MCut−$57.7M
Hayward Hldgs Inc2.15M$28.8M0.6%−$4.46MCut−$6.36M
Qualcomm Inc211.1K$27.2M0.5%−$8.92MCut−$17M
Amphenol Corp New213.1K$26.9M0.5%−$257.6KAdded$23M
Casella Waste Sys Inc327.6K$26M0.5%−$6.09MCut−$7.65M
Ptc Inc.PTC180.6K$25.7M0.5%−$5.73MCut−$27.7M
Csw Industrials, Inc.CSW96.6K$25.2M0.5%−$3.04MAdded−$1.94M
Mettler Toledo International Inc/MTD19.7K$24.8M0.5%−$2.62MCut−$18.3M
Applied Indl Technologies In90.3K$23.9M0.5%$771.6KCut−$514.5K
Core & Main, Inc.CNM474.4K$23.4M0.4%−$1.22MCut−$2.63M
Badger Meter IncBMI150.9K$23M0.4%−$2.69MAdded$1.74M
Federal Signal Corp211.8K$22.9M0.4%−$89.8KAdded$1.24M
Saia IncSAIA64.8K$22.8M0.4%New
American Tower Corp New131.9K$22.8M0.4%−$394.3KCut−$5.34M
Idexx Labs Inc40K$22.5M0.4%−$4.59MCut−$6.22M
Crowdstrike Hldgs Inc56K$21.9M0.4%−$4.39MCut−$7.14M
Esco Technologies IncESE73.1K$20.6M0.4%$6.29MCut−$485.5K
Verisk Analytics, Inc.VRSK107.3K$20.4M0.4%−$3.64MCut−$19.9M
Booz Allen Hamilton Hldg Cor260.5K$20.3M0.4%−$1.65MCut−$11.7M
Onto Innovation Inc.ONTO93.6K$19.2M0.4%$4.42MCut$3.57K
Procter And Gamble CoPG129.5K$18.7M0.4%$146.4KCut−$79.6K
Lemaitre Vascular IncLMAT165.3K$18.1M0.3%$4.64MCut$3.92M
Morningstar, Inc.MORN102.4K$17.3M0.3%−$4.94MCut−$14.3M
Entegris IncENTG142.4K$16.7M0.3%$4.7MCut−$8.09M
Hamilton Lane IncHLNE156.9K$15.6M0.3%−$5.48MCut−$21.4M
Brown & Brown, Inc.BRO232.8K$15.2M0.3%−$3.37MCut−$15.7M
Microchip Technology Inc.230.4K$14.9M0.3%$205KCut−$9.96M
Costco Whsl Corp New14.5K$14.5M0.3%$1.95MCut$706.7K
Vse Corp77.2K$14.2M0.3%New
Eagle Matls Inc74.7K$14.2M0.3%−$1.29MCut−$6.88M
Kadant IncKAI46.4K$13.6M0.3%$340.1KCut−$5.58K
Agilysys IncAGYS184.9K$13.2M0.3%−$8.82MCut−$10.9M
Descartes Sys Group Inc183.5K$13.1M0.3%−$2.95MCut−$17.7M
Johnson & JohnsonJNJ53.6K$13.1M0.3%$2.01MCut$1.87M
Alarm Com Hldgs Inc300K$13M0.2%−$2.35MCut−$7.97M
Ensign Group, IncENSG64.2K$12.9M0.2%$1.48MAdded$3.46M
Roper Technologies IncROP35.6K$12.6M0.2%−$3.25MCut−$5.76M
Simpson Mfg Inc68.7K$11.8M0.2%$697KCut$166.6K
Pdf Solutions IncPDFS353K$11.5M0.2%New
Stryker CorpSYK34.8K$11.4M0.2%−$125.2KAdded$9.52M
Murphy USA Inc.MUSA23K$11.4M0.2%$2.08MCut−$6.76M
Healthequity, Inc.HQY133.8K$11.2M0.2%−$1.08MCut−$1.66M
Warby Parker Inc.WRBY528.1K$11.1M0.2%New
Alphabet Inc36.7K$10.6M0.2%−$931.7KAdded−$897.8K
Utz Brands, Inc.UTZ1.33M$10.5M0.2%−$3.2MAdded−$2.99M
Synopsys IncSNPS26.4K$10.5M0.2%−$1.93MCut−$3.16M
Douglas Dynamics, IncPLOW246.3K$10.4M0.2%$2.33MCut−$7.24M
Berkshire Hathaway Inc Del20.6K$9.89M0.2%−$484KCut−$848.4K
Rambus Inc Del101.9K$8.76M0.2%New
Jpmorgan Chase & Co.29.7K$8.73M0.2%−$832.5KCut−$3.01M
Berkshire Hathaway Inc Del12$8.62M0.2%−$439.9KCut−$1.19M
Vanguard Index Fds14.3K$8.55M0.2%−$423.5KCut−$521.3K
Watsco Inc22.8K$8.31M0.2%$579.7KAdded$1.03M
Atlassian CorpTEAM110.5K$7.54M0.1%−$10.4MCut−$25.6M
Exponent IncEXPO114.9K$7.5M0.1%−$483.8KCut−$779.9K
Marketaxess Hldgs Inc41K$6.76M0.1%−$667.1KCut−$869.3K
Capital One Finl Corp32.4K$5.9M0.1%−$1.75MAdded−$1.18M
AbbVie Inc.ABBV25.8K$5.62M0.1%−$284KCut−$2.22M
Price T Rowe Group IncTROW57.2K$5.15M0.1%−$699.8KCut−$1.71M
Vanguard Intl Equity Index F57K$4.28M0.1%$87.8KCut−$15.2K
Lowes Cos Inc17.1K$4.04M0.1%−$83.4KCut−$958.9K
Cisco Sys Inc50.5K$3.92M0.1%$26.8KAdded$234.8K
Wingstop Inc.WING23.5K$3.64M0.1%New
Automatic Data Processing In17.2K$3.5M0.1%−$931.4KCut−$2.13M
Intuit Inc.INTU7.7K$3.33M0.1%−$1.77MCut−$56.6M
Home Depot, Inc.HD9.18K$3.02M0.1%−$139.6KCut−$304.8K
Cameco CorpCCJ27.7K$3.01M0.1%$474.2KCut−$336.4K
Eli Lilly & CoLLY3.1K$2.85M0.1%−$480.2KCut−$1.95M
Shopify Inc.SHOP23.8K$2.82M0.1%−$1.01MCut−$2.55M
Eqt CorpEQT43.7K$2.78M0.1%$391.3KAdded$693.5K
Coca Cola CoKO36.3K$2.76M0.1%$222.8KCut$159.8K
Merck & Co., Inc.MRK22.7K$2.73M0.1%$341KCut−$727.7K
Paychex IncPAYX29.2K$2.69M0.1%−$586.4KCut−$939.2K
Abbott LabsABT25.2K$2.59M0.1%−$570.2KCut−$1.26M
Ww Grainger Inc2.34K$2.55M0.0%$191.3KHeld
Franco Nev Corp9.85K$2.43M0.0%$391.7KCut$109.8K
Range Res Corp53.8K$2.43M0.0%$533.3KCut$462.8K
Wabtec9.64K$2.41M0.0%$351.6KCut$308.9K
Ishares Tr24.1K$2.34M0.0%$26.2KAdded$53.9K
Wheaton Precious Metals Corp.WPM17.4K$2.29M0.0%$235.4KCut−$269.9K
Meta Platforms, Inc.META3.84K$2.19M0.0%−$337.4KCut−$400.1K
Crown Castle Inc.CCI26.6K$2.17M0.0%−$201.4KCut−$221.2K
Exxon Mobil Corp12.4K$2.1M0.0%$609.3KCut$507.1K
Pepsico IncPEP12.9K$2M0.0%$151.4KHeld
Chevron Corp NewCVX8.49K$1.76M0.0%$462.5KCut−$386.2K
Fiserv IncFISV31.3K$1.75M0.0%−$356.3KCut−$430.2K
Illinois Tool Wks Inc6.22K$1.62M0.0%$69.7KAdded$392.9K
Dexcom IncDXCM25.3K$1.59M0.0%−$90.4KHeld
American Express CoAXP5.25K$1.59M0.0%−$63.2KAdded$1.24M
Edwards Lifesciences CorpEW19.3K$1.54M0.0%−$99.5KCut−$331.4K
Canadian Natl Ry Co14.9K$1.53M0.0%$58.4KHeld
Analog Devices IncADI4.75K$1.51M0.0%$223KCut−$990.1K
Mcdonalds CorpMCD4.8K$1.49M0.0%$23.6KAdded$94.5K
Chubb Limited4.54K$1.48M0.0%$58.6KAdded$156.4K
Vanguard Whitehall Fds9.91K$1.47M0.0%$44.9KAdded$61.9K
Tractor Supply Co31.9K$1.44M0.0%−$150KCut−$490.1K
Tjx Cos Inc New8.62K$1.38M0.0%$52.5KHeld
Norfolk Southn Corp4.52K$1.3M0.0%−$7.78KHeld
Enterprise Prods Partners L34.2K$1.3M0.0%$197.9KCut$194.7K
Bhp Group Ltd17.5K$1.27M0.0%New
Emerson Elec Co9.56K$1.25M0.0%−$7.5KAdded$667K
Pfizer IncPFE43.1K$1.21M0.0%$137.2KCut$107.6K
Vanguard Specialized Funds5.19K$1.12M0.0%−$24.5KCut−$37.7K
Oracle Corp7.55K$1.11M0.0%−$360.7KCut−$1.48M
Dicks Sporting Goods Inc5.47K$1.09M0.0%$1.75KHeld
Vanguard Intl Equity Index F19.9K$1.08M0.0%$5.77KCut$4.43K
Mccormick & Co Inc21.2K$1.07M0.0%−$374.7KCut−$510.4K
Nvidia CorpNVDA6.1K$1.06M0.0%−$73.8KCut−$174.9K
Intel CorpINTC23.8K$1.05M0.0%$172.3KCut$56.9K
Disney Walt Co10.9K$1.05M0.0%−$189.6KCut−$776.6K
Nextera Energy Inc11.3K$1.05M0.0%$142.1KCut−$970K
Williams Sonoma IncWSM5.67K$1.03M0.0%New
Terreno Rlty Corp16.6K$1.02M0.0%$44.9KCut−$1.38M
Constellation Software Inc573$1.01M0.0%−$367KCut−$482.2K
Colgate Palmolive CoCL11.5K$976.1K0.0%$71.1KHeld
International Business Machs3.76K$910.7K0.0%−$202.2KHeld
Wec Energy Group, Inc.WEC7.73K$895.1K0.0%$79.7KHeld
Honeywell Intl Inc3.95K$892.4K0.0%$122.2KCut−$61.8K
Kla CorpKLAC606$892.3K0.0%New
Labcorp Holdings Inc.LH3.31K$882.6K0.0%$42.9KAdded$206.5K
Berkley W R Corp13K$864.3K0.0%−$50.1KHeld
Mondelez Intl Inc14.9K$856.4K0.0%$56.6KCut−$485.9K
Ishares Tr8.92K$807.8K0.0%$8.16KAdded$125.2K
Mp Materials Corp16.6K$800.5K0.0%−$37.5KHeld
Novartis Ag5.12K$781.3K0.0%$49.6KAdded$322.1K
RTX CorpRTX4.01K$773.9K0.0%$32.1KAdded$153.5K
Linde PlcLIN1.51K$747.6K0.0%$104.6KCut−$763.5K
Vanguard Index Fds2.31K$742.7K0.0%−$30.6KAdded$33.6K
Walmart Inc.WMT5.95K$739.7K0.0%$76.6KCut−$603K
Progressive Corp3.73K$739.2K0.0%New
Starbucks CorpSBUX8.19K$733.4K0.0%$44KCut−$260K
Quanta Svcs Inc1.33K$729.1K0.0%$168.6KHeld
3M COMMM4.97K$721.9K0.0%−$73.9KHeld
Nestle Sa Adr7.19K$712.7K0.0%$2.3KHeld
Unitedhealth Group IncUNH2.52K$681.3K0.0%−$149.9KCut−$202.4K
Amgen IncAMGN1.93K$680.1K0.0%$47.4KHeld
Spdr Gold Tr1.56K$673.4K0.0%$53.2KHeld
East West Bancorp IncEWBC6.1K$651.2K0.0%−$34.3KCut−$146.7K
Sba Communications Corp NewSBAC3.69K$634.4K0.0%−$78.6KCut−$724.2K
Morgan Stanley3.85K$634.3K0.0%−$23.4KAdded$313.8K
Blackstone Inc.BX5.5K$632.3K0.0%−$215.3KCut−$245.3K
Ishares Tr8.4K$623.1K0.0%−$8.87KHeld
M & T Bk Corp2.98K$617.1K0.0%$10.3KAdded$221.6K
Caterpillar IncCAT852$603.6K0.0%$115.5KHeld
Spdr Series Trust22.3K$600.3K0.0%−$10.9KHeld
Canadian Pacific Kansas City7.1K$558.6K0.0%$35.7KCut−$42.7K
Us Bancorp Del10.7K$557.5K0.0%−$14.5KCut−$33.1K
Lvmh Moet Hennessy Lou Vuitton4.91K$536.7K0.0%−$204.2KCut−$1.48M
Pool CorpPOOL2.6K$526.7K0.0%−$53.2KAdded$66.2K
Eaton Corp PlcETN1.47K$524.7K0.0%$57.4KHeld
Mckesson CorpMCK578$500.2K0.0%$26.1KCut−$515.3K
Hubbell IncHUBB1.01K$495.2K0.0%$47.1KCut−$619.1K
Vanguard Index Fds5.52K$489.8K0.0%$1.16KHeld
Marsh & Mclennan Cos Inc2.82K$488.4K0.0%−$34KCut−$574.2K
Philip Morris Intl Inc2.89K$477.8K0.0%$14.3KCut−$41.9K
Comcast Corp New16.6K$476.1K0.0%−$19.6KCut−$46.7K
Sysco CorpSYY6.58K$469.1K0.0%−$15.5KHeld
Watsco Inc1.25K$448.6K0.0%New
Pnc Finl Svcs Group Inc2.12K$441.4K0.0%−$1.36KCut−$310.3K
ConocophillipsCOP3.3K$435.6K0.0%$126.7KHeld
Boeing Co2.18K$433.5K0.0%New
Oneok Inc /New/OKE4.78K$432.2K0.0%$80.8KHeld
Goldman Sachs Group Inc506$428.1K0.0%New
NXP Semiconductors N.V.NXPI2.11K$415.6K0.0%−$42.6KCut−$656.7K
Wells Fargo Co New5.15K$410.3K0.0%−$43.3KAdded$113.1K
Vanguard Index Fds1.56K$409.1K0.0%$6KAdded$19.6K
Keysight Technologies, Inc.KEYS1.43K$402.4K0.0%$112.8KHeld
Middleby CorpMIDD3.03K$401.9K0.0%−$48.8KHeld
Booking Holdings Inc.BKNG95$400K0.0%−$108.8KCut−$398K
Vanguard World Fd572$399.1K0.0%−$32.1KHeld
EMCOR Group, Inc.EME540$398.7K0.0%$68.3KCut$28.6K
Air Prods & Chems Inc1.37K$398K0.0%$59.6KHeld
Ishares Inc4.93K$387.8K0.0%$29.5KHeld
Ventas, Inc.VTR4.73K$386.7K0.0%$20.8KHeld
Lennox Intl Inc804$373.2K0.0%New
Wp Carey Inc5.46K$371.3K0.0%$19.7KHeld
Bank America Corp7.61K$371.1K0.0%−$47.6KCut−$549.8K
Accenture Plc Ireland1.87K$370.8K0.0%−$130.9KCut−$269.9K
Verizon Communications IncVZ7.36K$369.7K0.0%$69.7KCut−$44.7K
Wisdomtree Tr9K$367.2K0.0%−$49.4KHeld
Rpm Intl Inc3.65K$362.8K0.0%−$16.8KHeld
Eog Res Inc2.5K$361.3K0.0%$98.9KCut−$526.9K
Ishares Tr1.91K$346.5K0.0%−$34.9KHeld
Illumina, Inc.ILMN2.68K$330.7K0.0%−$21.2KCut−$297.5K
Vanguard World Fd1.2K$327.9K0.0%−$18.7KHeld
Taiwan Semiconductor Mfg Ltd966$326.5K0.0%$31.3KAdded$47.5K
Southern Co3.34K$322.5K0.0%$31.1KHeld
Calamos Conv Opportunities &29.4K$315.9K0.0%$7.65KHeld
Newmont Corp2.91K$314.8K0.0%New
Bristol-Myers Squibb Co5.11K$309.9K0.0%New
Bp Plc6.55K$308.1K0.0%$80.4KHeld
Pinnacle West Cap Corp3K$302.3K0.0%$36.1KHeld
Select Sector Spdr Tr2.67K$291.4K0.0%−$27.9KHeld
Trimble Inc.TRMB4.34K$283.4K0.0%−$57KHeld
Shore Bancshares IncSHBI14.5K$270.9K0.0%$14.5KHeld
Allison Transmission Hldgs I2.31K$270.2K0.0%New
Spdr S&P 500 Etf Tr406$264K0.0%−$12.8KHeld
Becton Dickinson & CoBDX1.68K$263.4K0.0%−$59.9KAdded−$52K
Vanguard Tax-Managed Fds4.04K$259.2K0.0%$6.51KHeld
Altria Group, Inc.MO3.89K$256.4K0.0%$32.4KCut−$2.23K
Select Sector Spdr Tr1.91K$254.1K0.0%−$21.2KHeld
Prologis Inc.1.92K$253.7K0.0%$8.67KCut−$29.1K
Otis Worldwide CorpOTIS3.17K$244K0.0%New
Vanguard Index Fds796$228.6K0.0%−$2.13KAdded$25.4K
Bank Hawaii Corp3.02K$224.6K0.0%$17.8KHeld
Ge Aerospace741$210.3K0.0%−$18KHeld
Neogen CorpNEOG22K$204.4K0.0%$50.6KHeld
Alps Etf Tr3.81K$200.5K0.0%New
Flaherty & Crumrine Pfd Secs12.3K$190.5K0.0%−$12.5KHeld
Gamco Global Gold Nat Res &23.5K$124.9K0.0%$3.76KHeld
Mergenet Solutions Inc Com10K$10K0.0%$0Held

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.