DOSSIER · 13F-HR · Q1 2026

PUZO MICHAEL J

$343M in tracked AUM across 379 positions as of Q1 2026.

PM
CIK 0001053914 · last filed Mar 31, 2026
Total AUM
$343M
as of Q1 2026
Holdings
379
positions
Whale Score
48
48
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026

Nine shares. That's the entire Berkshire Hathaway Class A position in Puzo Michael J's book — worth $6.46 million, 1.88% of the portfolio, and identical to last quarter's count down to the share. It's the smallest number in the filing, and it says something real about the strategy: this is a patient, buy-and-hold book that leaves its highest-conviction anchors alone even while it makes dozens of smaller moves elsewhere. Those smaller moves included a genuine 38.0% cut to UnitedHealth Group ($1.9 million real outflow, the largest real sale), a 285.1% increase in Broadcom (still a small $1.3 million position), and an RTX Corp CUSIP reissuance masking a real 8.5% share reduction — all inside a 379-position, $343.4 million book that fell 6.5% in AUM this quarter.

The real moves happened at the margins

While Berkshire sat untouched, UnitedHealth Group saw the book's largest genuine sale: shares down 38.0%, a real $1.9 million outflow. McCormick & Co fell 42.5% (a real $934 thousand outflow), Caterpillar fell 51.1% (a real $832 thousand outflow, though a small position throughout), and Fiserv fell 28.0% (a real $955 thousand outflow). On the buy side, Broadcom grew 285.1% in share count — a real $1.3 million purchase, though it remains one of the smaller positions in the book — while Uber grew 25.4% ($999 thousand real add) and Charles Schwab grew 19.5% ($759 thousand real add).

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
GOOGL
ALPHABET INC CL A
$21M74K6.2%
02
NVDA
NVIDIA CORP
$19M107K5.4%
03
AAPL
APPLE
$19M73K5.4%
04
ADI
ANALOG DEVICES
$15M48K4.5%
05
JNJ
JOHNSON AND JOHNSON
$15M61K4.4%
06
MSFT
MICROSOFT
$14M38K4.1%
07
RTX
RTX CORPORATION
$14M71K4.0%
08
TJX
TJX COS
$13M78K3.6%
09
MA
MASTERCARD
$12M25K3.6%
10
AMZN
AMAZON.COM
$12M60K3.6%

Filing history

2026Q1Mar 31
$343M 6.5%
379 positionsView →
2025Q4Dec 31
$367M 0.2%
371 positionsView →
2025Q3Sep 30
$367M 4.5%
377 positionsView →
2025Q2Jun 30
$351M 0.6%
316 positionsLocked
2025Q1Mar 31
$349M 2.4%
322 positionsLocked
2024Q4Dec 31
$358M 6.5%
274 positionsLocked
2024Q3Sep 30
$383M 6.2%
282 positionsLocked
2024Q2Jun 30
$360M 0.1%
283 positionsLocked
2024Q1Mar 31
$361M 14.6%
293 positionsLocked
2023Q4Dec 31
$315M 6.8%
280 positionsLocked
2023Q3Sep 30
$295M 6.7%
290 positionsLocked
2023Q2Jun 30
$316M 5.4%
300 positionsLocked
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