DOSSIER · 13F-HR · Q2 2026

MASECO LLP

$3.6B in tracked AUM across 291 positions as of Q2 2026.

ML
CIK 0002074052 · last filed Jun 30, 2026
Total AUM
$3.6B
as of Q2 2026
Holdings
291
positions
Whale Score
67
67
tracked
Activity
no data
changes this Q
AI Analysis · Q2 2026

Portfolio Overview

MASECO LLP manages a substantial, diversified portfolio valued at approximately $2.30 billion as of the report date December 31, 2025. The firm experienced robust growth during the quarter, with total assets increasing by 11.6% (up from $2.06 billion in the prior quarter). The portfolio is highly fragmented, consisting of 543 total holdings, which suggests a strategy focused on broad diversification and risk management rather than concentrated bets. The portfolio is overw...

Key Holdings

The portfolio exhibits a high degree of concentration in its top tier, despite the large number of total holdings. The top two positions—DFUS (Dimensional U.S. Core Equity 2 ETF) and VGIT (Vanguard Intermediate-Term Treasury Bond ETF)—command a significant 40.08% of the total portfolio value.

Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Quarter at a glance — Q2 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q2 2026.

#HoldingValueSharesWeight
01
DFUS
DIMENSIONAL ETF TRUST
$604M7.4M17.0%
02
VGIT
VANGUARD SCOTTSDALE FDS
$393M6.7M11.1%
03
AVUS
AMERICAN CENTY ETF TR
$305M2.4M8.6%
04
DFGP
DIMENSIONAL ETF TRUST
$224M4.1M6.3%
05
AVDE
AMERICAN CENTY ETF TR
$179M2.0M5.0%
06
DFIC
DIMENSIONAL ETF TRUST
$126M3.4M3.5%
07
AVSU
AMERICAN CENTY ETF TR
$116M1.3M3.3%
08
AVEM
AMERICAN CENTY ETF TR
$112M1.2M3.1%
09
DFUV
DIMENSIONAL ETF TRUST
$110M2.0M3.1%
10
DFAU
DIMENSIONAL ETF TRUST
$106M2.0M3.0%

Filing history

2026Q2Jun 30
$3.6B 11.6%
291 positionsView →
2026Q1Mar 31
$3.2B 38.8%
391 positionsView →
2025Q4Dec 31
$2.3B 11.3%
543 positionsView →
2025Q3Sep 30
$2.1B 21.6%
267 positionsView →
2025Q2Jun 30
$2.6B
509 positionsLocked