DF DENT & CO INC
Q3 2021 Form 13-F
BALTIMORE, MARYLAND
CIK 0000934999
· CRD 105179
· SEC-registered investment adviser
$9.8B Reported Value Total
D.F. DENT AND COMPANY, INC. reports 1,281 total accounts under management (AUM). There are 1,281 discretionary accounts valued at $8,146,664,285, and 0 non-discretionary accounts.
Source: Form ADV filed * Note that certain holdings are exempt from Form 13-F reporting, so the AUM totals may be greater than the Form 13-F total.
Source: Form ADV filed 2026-06-18
Reported value
$9.8B
Quarter over quarter
+0.7%
Holdings
235
Top-10 concentration
31.1%
Filing Structure
Key People
Form ADV owners & control persons
Daniel Forbes Dent
CHAIRMAN
Matthew Forbes Dent
PRESIDENT
Melissa Curry
SHAREHOLDER
Filing Navigation
Coverage begins with the second quarter of 2013. Earlier quarters are not shown while their accuracy is being verified.
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Q3 2021 13F record
Q3 2021 13F filing summary
| Period of report | September 30, 2021 |
|---|---|
| Filed | November 15, 2021 |
| Form | 13F-HR |
| Reported value | $9.8B |
| Positions | 235 |
| Change in reported value | +3.6% |
| New positions | 9 |
| Exited positions | 10 |
| Position turnover | 7.8% |
| Top-10 concentration | 31.1% |
13F filings by quarter
| Quarter | Positions | Value |
|---|---|---|
|
Q2 2026 13F
Filed Aug 14, 2026
|
271 | $5.3B |
|
Q1 2026 13F
Filed May 15, 2026
|
262 | $5.2B |
|
Q4 2025 13F
Filed Feb 17, 2026
|
263 | $6.9B |
|
Q3 2025 13F
Filed Nov 14, 2025
|
272 | $7.7B |
|
Q2 2025 13F
Filed Aug 14, 2025
|
251 | $7.9B |
|
Q1 2025 13F
Filed May 15, 2025
|
260 | $7.5B |
|
Q4 2024 13F
Filed Feb 12, 2025
|
248 | $7.9B |
|
Q3 2024 13F
Filed Nov 15, 2024
|
261 | $8.2B |
|
Q2 2024 13F
Filed Aug 14, 2024
|
244 | $7.7B |
|
Q1 2024 13F
Filed May 15, 2024
|
265 | $8.2B |
|
Q4 2023 13F
Filed Feb 14, 2024
|
250 | $7.5B |
|
Q3 2023 13F
Filed Nov 14, 2023
|
255 | $6.8B |
|
Q2 2023 13F
Filed Aug 14, 2023
|
256 | $7.4B |
|
Q1 2023 13F
Filed May 15, 2023
|
238 | $7.1B |
|
Q4 2022 13F
Filed Feb 15, 2023
|
239 | $6.7B |
|
Q3 2022 13F
Filed Nov 14, 2022
|
243 | $6.5B |
|
Q2 2022 13F
Filed Aug 15, 2022
|
233 | $7.1B |
|
Q1 2022 13F
Filed May 16, 2022
|
257 | $8.7B |
|
Q4 2021 13F
Filed Feb 14, 2022
|
248 | $9.9B |
|
Q3 2021 13F
Filed Nov 15, 2021
|
235 | $9.8B |
33 earlier quarters on file — choose one from the quarter menu above.
Top 20 holdings · Q3 2021
| # | Holding | Reported value | % of portfolio |
|---|---|---|---|
| 1 | TECH BIO-TECHNE CORP | $371.1M | 3.8% |
| 2 | ANSS ANSYS INC | $341.0M | 3.5% |
| 3 | BL BLACKLINE INC | $311.1M | 3.19% |
| 4 | ISRG INTUITIVE SURGICAL INC | $299.2M | 3.07% |
| 5 | VRSK VERISK ANALYTICS INC | $296.0M | 3.03% |
| 6 | VMC VULCAN MATERIALS CO | $290.0M | 2.97% |
| 7 | WCN WASTE CONNECTIONS INC | $288.9M | 2.96% |
| 8 | ILMN ILLUMINA INC | $281.0M | 2.88% |
| 9 | CABO CABLE ONE INC COM | $280.4M | 2.87% |
| 10 | MKL MARKEL CORP HLDG CO | $277.3M | 2.84% |
| 11 | ECL ECOLAB INC | $266.7M | 2.73% |
| 12 | V VISA INC CL A | $258.4M | 2.65% |
| 13 | CSGP COSTAR GROUP INC | $236.5M | 2.42% |
| 14 | BKI BLACK KNIGHT INC | $222.6M | 2.28% |
| 15 | DHR DANAHER CORP | $221.4M | 2.27% |
| 16 | FAST FASTENAL CO | $220.9M | 2.26% |
| 17 | TDG TRANSDIGM GROUP INC | $218.8M | 2.24% |
| 18 | GOOG ALPHABET INC CLASS C | $218.2M | 2.24% |
| 19 | MCO MOODYS CORP | $217.6M | 2.23% |
| 20 | TFX TELEFLEX INC COM | $209.6M | 2.15% |
Values as reported on the Q3 2021 Form 13F. Every position is in the holdings table below.