13F Insight
DOSSIER · 13F-HR · Q1 2026

DF DENT & CO INC

$5.2B in tracked AUM across 262 positions as of Q1 2026.

DD
CIK 0000934999 · last filed Mar 31, 2026
Total AUM
$5.2B
as of Q1 2026
Holdings
262
—
positions
Whale Score
58
58
tracked
Activity
—
no data
changes this Q
AI Analysis · Q1 2026
Comprehensive Analysis of DF Dent & Co Inc SEC 13F Filing (Q3 2025)
Portfolio Overview

DF Dent & Co Inc manages a concentrated portfolio valued at approximately $3.31 billion as of September 30, 2025. This represents a decrease of 7.5% from the previous quarter's value of $3.58B. The portfolio consists of 115 holdings, indicating a strategy that balances diversification with significant concentration in top-tier ideas. The firm appears to follow a high-conviction approach, as evidenced by ...

The quarter was characterized by high portfolio turnover and active management. The activity summary reveals that the firm adjusted or exited nearly every position, with 33 stakes reduced, 13 increased, 4 new positions initiated, and 4 complete exits. This level of activity suggests a dynamic investment style that is responsive to valuation changes, market conditions, or rotating sector opportunities.

Key Holdings

The portfolio is anchored by high-quality "compounder" businesses, with the top positions displaying strong competitive advantages.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
GOOG
ALPHABET INC CL C
$217M757K4.2%02
V
VISA INC CL A
$187M618K3.6%03
AMZN
AMAZON.COM INC
$166M796K3.2%04
HEI/A
HEICO CORP CL A
$164M777K3.1%05
VMC
VULCAN MATERIALS CO
$148M544K2.8%06
MA
MASTERCARD INC CL A
$143M287K2.7%07
TDG
TRANSDIGM GROUP INC
$142M123K2.7%08
WCN
WASTE CONNECTIONS INC
$140M860K2.7%09
ECL
ECOLAB INC
$138M519K2.6%10
MCO
MOODYS CORP
$129M295K2.5%

Filing history

2026Q1Mar 31
$5.2B▼ 24.8%
262 positionsView →2025Q4Dec 31
$6.9B▲ 109.9%
263 positionsView →2025Q3Sep 30
$3.3B▼ 7.5%
115 positionsView →2025Q2Jun 30
$3.6B▲ 3.0%
113 positionsLocked2025Q1Mar 31
$3.5B▼ 56.0%
117 positionsLocked2024Q4Dec 31
$7.9B▼ 3.9%
248 positionsLocked2024Q3Sep 30
$8.2B▲ 6.3%
262 positionsLocked2024Q2Jun 30
$7.7B▼ 5.6%
244 positionsLocked2024Q1Mar 31
$8.2B▲ 8.6%
266 positionsLocked2023Q4Dec 31
$7.5B▲ 10.5%
250 positionsLocked2023Q3Sep 30
$6.8B▼ 7.6%
256 positionsLocked2023Q2Jun 30
$7.4B▲ 4.2%
257 positionsLocked
Showing 12 of 100