DOSSIER · 13F-HR · Q2 2026

Seilern Investment Management Ltd

$794M in tracked AUM across 24 positions as of Q2 2026.

SI
CIK 0001817797 · last filed Jun 30, 2026
Total AUM
$794M
as of Q2 2026
Holdings
24
positions
Whale Score
68
68
tracked
Activity
no data
changes this Q
AI Analysis · Q2 2026

Portfolio Overview

Seilern Investment Management Ltd has reported a substantial expansion in its 13F filing for the period ending December 31, 2025. The total portfolio value surged by 88.5%, rising from $684.28 million to $1.29 billion. This significant growth in Assets Under Management (AUM) coincides with a dramatic restructuring of the fund's composition. The number of holdings increased modestly to 24, but the turnover was exceptionally high. The manager executed a sweeping...

Key Holdings

The portfolio exhibits a high-conviction approach with the top ten positions accounting for approximately 70% of the total assets. The largest position is Mastercard Incorporated (MA) at $125.12 million (9.70%), followed closely by UnitedHealth Group (UNH) at $117.50 million (9.11%). These two financial and healthcare giants serve as the primary anchors of the portfolio.

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
MA
MASTERCARD INCORPORATED
$87M169K11.0%
02
UNH
UNITEDHEALTH GROUP INC
$67M160K8.4%
03
VEEV
VEEVA SYS INC
$56M317K7.1%
04
EW
EDWARDS LIFESCIENCES CORP
$54M600K6.8%
05
IDXX
IDEXX LABS INC
$51M98K6.5%
06
TYL
TYLER TECHNOLOGIES INC
$51M173K6.4%
07
WST
WEST PHARMACEUTICAL SVSC INC
$50M138K6.3%
08
ISRG
INTUITIVE SURGICAL INC
$46M116K5.8%
09
ADSK
AUTODESK INC
$44M228K5.6%
10
GOOGL
ALPHABET INC
$43M121K5.5%

Filing history

2026Q2Jun 30
$794M 5.3%
24 positionsView →
2026Q1Mar 31
$838M 35.0%
24 positionsView →
2025Q4Dec 31
$1.3B 6.8%
24 positionsView →
2025Q3Sep 30
$1.4B 8.7%
22 positionsView →
2025Q2Jun 30
$1.5B 0.9%
22 positionsLocked
2025Q1Mar 31
$1.5B 12.8%
23 positionsLocked
2024Q4Dec 31
$1.8B
21 positionsLocked