DF DENT & CO INC — 13F Holdings & Portfolio
CIK 934999 · latest 13F-HR filed 2026-05-15
DF DENT & CO INC manages $5.22B in 13F-reported U.S. long-equity assets across 262 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are GOOG (4.16%), V (3.58%), AMZN (3.18%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 19 new positions, exited 20, added to 65, and trimmed 145.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$5.22B
Long-equity book
262
Distinct positions
2026-03-31
Filed 2026-05-15
+19 / −20 / ↑65 / ↓145
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- BROADCOM INC$60.0M +11302.3%
- PERIMETER SOLUTIONS INC$26.2M +37.6%
- AMPHENOL CORP NEW CL A$23.0M +579.7%
- MOTOROLA SOLUTIONS INC.$20.8M +59.8%
- NETFLIX INC$16.4M +47.4%
Top Trims
- HEICO CORP CL A-$85.4M -34.2%
- COSTAR GROUP INC-$70.2M -52.0%
- VERALTO CORP-$67.4M -59.1%
- VULCAN MATERIALS CO-$63.3M -30.0%
- S & P GLOBAL INC-$61.5M -48.7%
New Positions
- SAIA INC$22.8M
- VSE CORP$14.2M
- PDF SOLUTIONS INC$11.5M
- WARBY PARKER INC CL A$11.1M
- RAMBUS INC$8.8M
Exited Positions
- MASIMO CORP COM$18.6M
- SPS COMMERCE INC$18.1M
- SERVICETITAN INC CL A$9.5M
- JBT MAREL CORPORATION COM$5.7M
- ISHARES RUSSELL MIDCAP GROWTH$3.9M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ALPHABET INC CL C | GOOG | 02079K107 | $217.1M | 4.16% | 756,817 | SH |
| 2 | VISA INC CL A | V | 92826C839 | $186.8M | 3.58% | 618,044 | SH |
| 3 | AMAZON.COM INC | AMZN | 023135106 | $165.9M | 3.18% | 796,428 | SH |
| 4 | HEICO CORP CL A | HEI.A | 422806208 | $164.0M | 3.14% | 777,018 | SH |
| 5 | VULCAN MATERIALS CO | VMC | 929160109 | $148.0M | 2.83% | 543,613 | SH |
| 6 | MASTERCARD INC CL A | MA | 57636Q104 | $143.5M | 2.75% | 287,119 | SH |
| 7 | TRANSDIGM GROUP INC | TDG | 893641100 | $142.3M | 2.72% | 122,753 | SH |
| 8 | WASTE CONNECTIONS INC | WCN | 94106B101 | $139.6M | 2.67% | 859,515 | SH |
| 9 | ECOLAB INC | ECL | 278865100 | $138.0M | 2.64% | 518,622 | SH |
| 10 | MOODYS CORP | MCO | 615369105 | $128.9M | 2.47% | 295,401 | SH |
| 11 | INTUITIVE SURGICAL INC | ISRG | 46120E602 | $126.9M | 2.43% | 275,313 | SH |
| 12 | FASTENAL CO | FAST | 311900104 | $123.8M | 2.37% | 2,667,297 | SH |
| 13 | MICROSOFT CORP | MSFT | 594918104 | $108.6M | 2.08% | 293,450 | SH |
| 14 | BIO-TECHNE CORP | TECH | 09073M104 | $106.8M | 2.04% | 2,043,047 | SH |
| 15 | MONOLITHIC PWR SYS INC COM | MPWR | 609839105 | $96.8M | 1.85% | 88,549 | SH |
| 16 | PERIMETER SOLUTIONS INC | PRM | 71385M107 | $96.0M | 1.84% | 3,932,371 | SH |
| 17 | GUIDEWIRE SOFTWARE INC | GWRE | 40171V100 | $92.5M | 1.77% | 618,275 | SH |
| 18 | CBRE GROUP INC | CBRE | 12504L109 | $89.1M | 1.71% | 657,510 | SH |
| 19 | KINSALE CAPITAL GROUP INC. | KNSL | 49714P108 | $85.1M | 1.63% | 248,937 | SH |
| 20 | DANAHER CORP | DHR | 235851102 | $81.8M | 1.57% | 431,292 | SH |
| 21 | VEEVA SYSTEMS, INC. | VEEV | 922475108 | $81.0M | 1.55% | 461,103 | SH |
| 22 | CADENCE DESIGN SYSTEMS INC. | CDNS | 127387108 | $80.0M | 1.53% | 288,044 | SH |
| 23 | ASML HOLDINGS N.V. | ASML | N07059210 | $79.9M | 1.53% | 60,467 | SH |
| 24 | MSCI INC COM | MSCI | 55354G100 | $65.5M | 1.25% | 121,442 | SH |
| 25 | S & P GLOBAL INC | SPGI | 78409V104 | $64.8M | 1.24% | 152,338 | SH |
| 26 | COSTAR GROUP INC | CSGP | 22160N109 | $64.8M | 1.24% | 1,605,157 | SH |
| 27 | BROADCOM INC | AVGO | 11135F101 | $60.5M | 1.16% | 195,462 | SH |
| 28 | APPLE INC | AAPL | 037833100 | $59.4M | 1.14% | 234,123 | SH |
| 29 | TYLER TECHNOLOGIES INC | TYL | 902252105 | $58.1M | 1.11% | 169,677 | SH |
| 30 | MOTOROLA SOLUTIONS INC. | MSI | 620076307 | $55.7M | 1.07% | 128,423 | SH |
| 31 | UBER TECHNOLOGIES, INC. | UBER | 90353T100 | $54.3M | 1.04% | 755,581 | SH |
| 32 | MANHATTAN ASSOCS INC COM | MANH | 562750109 | $51.7M | 0.99% | 388,625 | SH |
| 33 | NETFLIX INC | NFLX | 64110L106 | $50.9M | 0.98% | 529,849 | SH |
| 34 | MARKEL GROUP INC | MKL | 570535104 | $50.8M | 0.97% | 26,536 | SH |
| 35 | APPFOLIO, INC | APPF | 03783C100 | $50.6M | 0.97% | 320,512 | SH |
| 36 | PROCORE TECHNOLOGIES INC | PCOR | 74275K108 | $49.0M | 0.94% | 860,181 | SH |
| 37 | VERALTO CORP | VLTO | 92338C103 | $46.7M | 0.89% | 528,258 | SH |
| 38 | THERMO FISHER SCIENTIFIC INC | TMO | 883556102 | $46.2M | 0.88% | 93,940 | SH |
| 39 | NOVANTA INC COM NPV | NOVT | 67000B104 | $45.7M | 0.88% | 386,877 | SH |
| 40 | O REILLY AUTOMOTIVE | ORLY | 67103H107 | $43.6M | 0.83% | 471,882 | SH |
| 41 | REPLIGEN CORPORATION | RGEN | 759916109 | $43.0M | 0.82% | 365,115 | SH |
| 42 | RBC BEARINGS INC | RBC | 75524B104 | $39.9M | 0.76% | 73,409 | SH |
| 43 | COPART INC COM | CPRT | 217204106 | $39.3M | 0.75% | 1,183,988 | SH |
| 44 | SERVICENOW INC | NOW | 81762P102 | $36.5M | 0.70% | 349,563 | SH |
| 45 | MEDPACE HOLDINGS, INC. | MEDP | 58506Q109 | $35.9M | 0.69% | 74,810 | SH |
| 46 | LANDBRIDGE COMPANY LLC CL A | LB | 514952100 | $34.4M | 0.66% | 497,807 | SH |
| 47 | SHERWIN-WILLIAMS CO | SHW | 824348106 | $34.0M | 0.65% | 105,986 | SH |
| 48 | GOOSEHEAD INSURANCE, INC. | GSHD | 38267D109 | $33.4M | 0.64% | 783,615 | SH |
| 49 | OLD DOMINION FGHT LINES INC CO | ODFL | 679580100 | $32.9M | 0.63% | 168,508 | SH |
| 50 | FLOOR & DECOR HOLDINGS, INC. | FND | 339750101 | $32.4M | 0.62% | 638,003 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-15 | $5.22B | 262 | 0000934999-26-000002 |
| 2025-12-31 | 2026-02-17 | $6.95B | 263 | 0000934999-26-000001 |
| 2025-09-30 | 2025-11-14 | $7.74B | 272 | 0000934999-25-000008 |