Seilern Investment Management Ltd

Seilern Investment Management Ltd is an institution, managing $1.4B across 22 long positions as of Q3 2025 with 45% Healthcare concentration and 72% concentrated in top 10 holdings.

Portfolio Value: $1.4B
Positions: 22
Top Holding: UNH at 9.63%
Last Reported: Q3 2025

Top Holdings

Largest long holdings in Seilern Investment Management Ltd's portfolio (72.5% of total portfolio)

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Holding	Sector	Position	Weight	Traded	Ownership	Owned Since
1 UnitedHealth Group UNH	Medical - Healthcare Plans Healthcare	$133.2M	9.63%	-$2.4M Sold	0.04% 385.7K shares	Q4 2024 Held for 11 months
2 Microsoft MSFT	Software - Infrastructure Technology	$131.8M	9.53%	-$34.6M Sold	0.00% 254.5K shares	Q4 2024 Held for 11 months
3 Mastercard MA	Financial - Credit Services Financial Services	$128.8M	9.31%	-$20.0M Sold	0.03% 226.4K shares	Q4 2024 Held for 11 months
4 Alphabet Inc. GOOGL	Internet Content & Information Communication Services	$106.4M	7.69%	-$24.7M Sold	0.00% 437.5K shares	Q4 2024 Held for 11 months
5 Idexx Laboratories IDXX	Medical - Diagnostics & Research Healthcare	$90.3M	6.52%	-$45.3M Sold	0.18% 141.3K shares	Q4 2024 Held for 11 months
6 Veeva Systems VEEV	Medical - Healthcare Information Services Healthcare	$87.6M	6.33%	-$12.5M Sold	0.18% 294.2K shares	Q4 2024 Held for 11 months
7 West Pharmaceutical Services WST	Medical - Instruments & Supplies Healthcare	$85.8M	6.20%	-$27.4M Sold	0.45% 327.0K shares	Q4 2024 Held for 11 months
8 Adobe ADBE	Software - Infrastructure Technology	$83.6M	6.04%	-$408.8K Sold	0.06% 237.0K shares	Q4 2024 Held for 11 months
9 Edwards Lifesciences EW	Medical - Devices Healthcare	$82.1M	5.93%	-$14.2M Sold	0.18% 1.1M shares	Q4 2024 Held for 11 months
10 Mettler-Toledo International, Inc. MTD	Medical - Diagnostics & Research Healthcare	$73.2M	5.29%	-$5.7M Sold	0.29% 59.7K shares	Q4 2024 Held for 11 months

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Changes

Portfolio activity, position movements, and quarter-over-quarter changes in Seilern Investment Management Ltd's latest filing

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Market Value

$1.4B

Prior: $1.5B

Q/Q Change

-8.71%

-$132.0M

Net Flows % of MV

-13.51%

Turnover Ratio

11.67%

New Purchases

0 stocks

Added To

7 stocks

+$68.0M

Sold Out Of

0 stocks

Reduced Holdings

15 stocks

-$254.9M

Increased Positions

Position	Shares Δ	Change
1 CME Group CME	+585.61%	27.3K → 187.2K +$56.2M
2 Intuitive Surgical ISRG	+17.45%	124.5K → 146.2K +$9.7M
3 Zoetis ZTS	+15.44%	62.6K → 72.3K +$1.4M
4 Visa V	+0.86%	19.8K → 19.9K +$58.0K
5 Automatic Data Processing, Inc. ADP	+0.86%	33.8K → 34.1K +$85.4K

Decreased Positions

Position	Shares Δ	Change
1 Cadence Design Systems CDNS	-88.63%	242.2K → 27.5K −$58.0M
2 Idexx Laboratories IDXX	-33.42%	212.2K → 141.3K −$45.3M
3 West Pharmaceutical Services WST	-24.24%	431.6K → 327.0K −$27.4M
4 Microsoft MSFT	-20.77%	321.3K → 254.5K −$34.6M
5 Alphabet Inc. GOOGL	-18.87%	539.3K → 437.5K −$24.7M

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Analytics

Portfolio insights and performance metrics for Seilern Investment Management Ltd

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Sector Allocation

Healthcare

45.40%

Technology

29.80%

Financial Services

15.10%

Communication Services

7.70%

Industrials

1.30%

Consumer Cyclical

0.70%

Market Cap Distribution

Mega Cap (> $200B)

36.64%

Large Cap ($10B - $200B)

63.36%

Portfolio Concentration

Top 10 Holdings %

72.48%

Top 20 Holdings %

99.0%

Top 50 Holdings %

100.0%

Top 100 Holdings %