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SEC Form 13F

DF DENT & CO INC 13F Holdings

Inspect DF DENT & CO INC's 2026-06-30 SEC 13F positions, public filing date, amendments and original receipt.

As of 2026-08-15T03:59:59.999Z

Report period
2026-06-30
Publicly available
2026-08-15
Reported value
$5,271,504,691
Positions
271
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Disclosed positions

Largest disclosed position values

Scale: 0 to 240,080,000 USD · zero baseline

Largest disclosed position values

  • GOOG · COM+240,080,854 USD
  • V · COM+190,103,271 USD
  • HEI.A · COM+180,324,569 USD
  • AMZN · COM+165,107,413 USD
  • TDG · COM+149,110,271 USD
  • VMC · COM+144,617,574 USD
  • ECL · COM+130,325,570 USD
  • WCN · COM+128,280,039 USD
  • MA · COM+126,604,468 USD
  • FAST · COM+123,792,998 USD

Reported underlying-position values for 2026-06-30, publicly available 2026-08-15. Put/call values are not option premiums; this subset is not a complete portfolio allocation. Exact issuer, class and unit remain in the table. Showing the first 10 of 50 recorded values; the complete table remains available below.

Inspect all 50 displayed rows: Disclosed positions

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ALPHABET INC CL CGOOGCOM$240,080,854679,481SHNone
VISA INC CL AVCOM$190,103,271554,092SHNone
HEICO CORP CL AHEI.ACOM$180,324,569699,176SHNone
AMAZON.COM INCAMZNCOM$165,107,413692,739SHNone
TRANSDIGM GROUP INCTDGCOM$149,110,271111,941SHNone
VULCAN MATERIALS COVMCCOM$144,617,574490,212SHNone
ECOLAB INCECLCOM$130,325,570467,771SHNone
WASTE CONNECTIONS INCWCNCOM$128,280,039769,572SHNone
MASTERCARD INC CL AMACOM$126,604,468246,504SHNone
FASTENAL COFASTCOM$123,792,9982,577,410SHNone
MOODYS CORPMCOCOM$122,029,058269,427SHNone
PERIMETER SOLUTIONS INCPRMCOM$118,454,5253,322,708SHNone
ASML HOLDINGS N.V.ASMLCOM$103,101,31551,824SHNone
MONOLITHIC PWR SYS INC COMMPWRCOM$100,848,57172,954SHNone
INTUITIVE SURGICAL INCISRGCOM$99,598,558250,449SHNone
CADENCE DESIGN SYSTEMS INC.CDNSCOM$97,313,724259,282SHNone
MICROSOFT CORPMSFTCOM$97,171,521260,499SHNone
GUIDEWIRE SOFTWARE INCGWRECOM$89,413,724726,645SHNone
CBRE GROUP INCCBRECOM$80,167,378595,199SHNone
BIO-TECHNE CORPTECHCOM$72,753,4191,029,772SHNone
DANAHER CORPDHRCOM$70,267,773368,898SHNone
BROADCOM INCAVGOCOM$64,909,831171,833SHNone
MOTOROLA SOLUTIONS INC.MSICOM$64,806,620156,051SHNone
DATADOG INC CL ADDOGCOM$62,317,166239,350SHNone
VEEVA SYSTEMS, INC.VEEVCOM$59,341,178334,373SHNone
MSCI INC COMMSCICOM$58,065,163103,680SHNone
APPLE INCAAPLCOM$57,160,593197,541SHNone
NOVANTA INC COM NPVNOVTCOM$53,871,570332,049SHNone
KINSALE CAPITAL GROUP INC.KNSLCOM$52,963,997160,589SHNone
APPFOLIO, INCAPPFCOM$51,143,862318,951SHNone
MEDPACE HOLDINGS, INC.MEDPCOM$51,081,52496,455SHNone
TAIWAN SEMICONDUCTOR MFG LTD ATSMCOM$50,757,095106,282SHNone
REPLIGEN CORPORATIONRGENCOM$48,689,109356,854SHNone
MARKEL GROUP INCMKLCOM$46,947,07924,038SHNone
LANDBRIDGE COMPANY LLC CL ALBCOM$44,971,554567,536SHNone
FLOOR & DECOR HOLDINGS, INC.FNDCOM$44,549,766750,501SHNone
CASELLA WASTE SYSTEMS INC CL ACWSTCOM$43,274,812446,270SHNone
O REILLY AUTOMOTIVEORLYCOM$43,057,785467,562SHNone
S & P GLOBAL INCSPGICOM$39,911,67298,000SHNone
AMPHENOL CORP NEW CL AAPHCOM$39,860,097226,067SHNone
UBER TECHNOLOGIES, INC.UBERCOM$39,336,004545,122SHNone
STRYKER CORPSYKCOM$38,377,737121,896SHNone
HAYWARD HOLDINGS INCHAYWCOM$37,956,1472,192,729SHNone
GOOSEHEAD INSURANCE, INC.GSHDCOM$37,607,482775,412SHNone
HAMILTON LANE INCHLNECOM$37,536,413476,169SHNone
COSTAR GROUP INCCSGPCOM$37,354,3401,319,009SHNone
CROWDSTRIKE HOLDINGS, INC.CRWDCOM$37,111,49848,630SHNone
VERALTO CORPVLTOCOM$37,062,846417,939SHNone
RBC BEARINGS INCRBCCOM$36,248,89556,282SHNone
ONTO INNOVATION INCONTOCOM$35,538,29493,905SHNone

Largest 50 positions by reported value; the filing may contain more positions.

Read one actual disclosure before using it

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ALPHABET INC CL CGOOGCOM$240,080,854679,481SHNone

First displayed source row from Disclosed positions. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-06-30 and its public availability date is 2026-08-15. Subtracting those calendar dates gives 46 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

Read the amount together with its Unit and Option columns. A reported put or call position is not an option premium paid, and a quarterly holding is not a purchase made on its public filing date. Check every accession in the effective amendment lineage below: a retained holding can originate in an earlier filing rather than the latest linked amendment.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

How amendments affect these holdings

This view uses 1 effective filing version(s). A restatement replaces the previous book; a new-holdings amendment adds positions. 1 positions lack a resolved ticker and 0 positions are put or call entries.

The displayed holdings combine the effective filing versions listed here. The latest receipt linked below identifies the current projection version; it is not proof that every retained holding originated in that latest amendment. Inspect all effective accessions when verifying a position's source.

A 13F is a delayed quarterly snapshot of disclosed holdings. It is not a complete trade ledger and does not reveal every position in a manager's portfolio. Option values refer to the reported underlying position rather than a traded option premium.

Show the table · 1 row, 2 columns
Effective SEC accessionRole in this view
0000934999-26-000003Latest effective version

Quarter end and public filing date

Use the filing's public availability date when constructing a historical observation. The quarter-end report period is earlier and cannot be substituted for when the public learned the holdings.