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Super Investors Seilern Investment Management Ltd
SI

Seilern Investment Management Ltd

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$771M
Positions
24
Quarter ended
September 30, 2026
Filed
October 13, 2026

Reported portfolio value by quarter (8 quarters reported)

$1.75B $771M
Q4 24 Q2 25 Q4 25 Q2 26 Q3 26

$1.75B in Q4 2024 → $771M now. Hover for any quarter.

Holdings

As reported for the quarter ended September 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Mastercard Incorporated 10.2% Trimmed 16% 142,816 $78.8M
Intuitive Surgical Inc 7.1% Added 16% 133,918 $54.5M
Tyler Technologies Inc 7.0% Trimmed 2.0% 169,676 $54.1M
VS Veeva Sys Inc 6.6% Trimmed 44% 178,815 $51M
Edwards Lifesciences Corp 6.6% Trimmed 1.7% 589,732 $50.9M
IL Idexx Labs Inc 6.5% Trimmed 1.0% 96,546 $50.4M
Unitedhealth Group Inc 6.2% Trimmed 18% 130,988 $48.1M
Microsoft Corp 6.1% Trimmed 20% 92,232 $47.3M
WP West Pharmaceutical Svsc Inc 5.8% Trimmed 13% 120,729 $44.8M
CD Cadence Design System Inc 5.8% Added 18% 134,530 $44.4M
Autodesk Inc 5.6% Trimmed 9.5% 206,140 $43.1M
Alphabet Inc 5.3% Trimmed 1.6% 119,522 $41.1M
Adobe Inc 4.3% Trimmed 24% 137,205 $32.9M
Copart Inc 4.2% Added 13% 1,188,547 $32.4M
Zoetis Inc 4.1% Trimmed 1.2% 454,608 $31.7M
Mettler Toledo International 4.0% Trimmed 2.8% 20,459 $30.9M
AP Accenture PLC Ireland 3.1% Trimmed 20% 130,331 $23.9M
Booking Holdings Inc 0.3% Added 0.8% 12,453 $2.03M
TM Tradeweb Mkts Inc 0.2% Trimmed 2.4% 19,015 $1.92M
Visa Inc 0.2% Trimmed 16% 4,737 $1.7M
AD Automatic Data Processing In 0.2% Trimmed 24% 6,418 $1.66M
M Moodys Corp 0.2% Trimmed 11% 3,219 $1.46M
Graco Inc 0.2% Trimmed 3.9% 16,132 $1.24M
Cme Group Inc 0.1% Trimmed 3.9% 3,651 $956K

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 7 quarters.

Q3 2026

quarter ended September 30, 2026 · filed October 13, 2026

Company Action Shares changed Value of change % of portfolio
VS Veeva Sys Inc Trimmed −138,217 −$39.5M 6.6%
Mastercard Incorporated Trimmed −26,594 −$14.7M 10.2%
Microsoft Corp Trimmed −22,895 −$11.7M 6.1%
Unitedhealth Group Inc Trimmed −29,035 −$10.7M 6.2%
Adobe Inc Trimmed −42,691 −$10.2M 4.3%
Intuitive Surgical Inc Added +18,223 +$7.41M 7.1%
CD Cadence Design System Inc Added +20,209 +$6.67M 5.8%
WP West Pharmaceutical Svsc Inc Trimmed −17,501 −$6.49M 5.8%
AP Accenture PLC Ireland Trimmed −33,311 −$6.11M 3.1%
Autodesk Inc Trimmed −21,535 −$4.5M 5.6%

Showing the 10 largest of 24 changes.

Q2 2026

quarter ended June 30, 2026 · filed July 08, 2026

Company Action Shares changed Value of change % of portfolio
Unitedhealth Group Inc Trimmed −121,096 −$50.3M 8.4%
WP West Pharmaceutical Svsc Inc Trimmed −87,791 −$31.5M 6.3%
Copart Inc Added +983,843 +$27.7M 3.7%
Alphabet Inc Trimmed −64,060 −$22.9M 5.5%
CD Cadence Design System Inc Trimmed −31,351 −$11.8M 5.4%
Zoetis Inc Added +141,233 +$10.1M 4.2%
IL Idexx Labs Inc Added +16,729 +$8.81M 6.5%
Edwards Lifesciences Corp Trimmed −89,960 −$8.14M 6.8%
Intuitive Surgical Inc Added +17,337 +$6.89M 5.8%
Microsoft Corp Trimmed −16,698 −$6.23M 5.4%

Showing the 10 largest of 24 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 07, 2026

Company Action Shares changed Value of change % of portfolio
Mettler Toledo International Trimmed −30,518 −$38.5M 3.4%
Alphabet Inc Trimmed −83,944 −$24.1M 6.4%
Mastercard Incorporated Trimmed −41,206 −$20.6M 10.6%
Unitedhealth Group Inc Trimmed −74,817 −$20.2M 9.1%
Microsoft Corp Trimmed −51,974 −$19.2M 5.8%
Edwards Lifesciences Corp Trimmed −233,069 −$18.7M 6.6%
Intuitive Surgical Inc Trimmed −34,055 −$15.7M 5.4%
Adobe Inc Trimmed −54,981 −$13.4M 5.1%
WP West Pharmaceutical Svsc Inc Trimmed −52,208 −$13.1M 6.8%
IL Idexx Labs Inc Trimmed −19,959 −$11.2M 5.4%

Showing the 10 largest of 24 changes.

Q4 2025

quarter ended December 31, 2025 · filed January 09, 2026

Company Action Shares changed Value of change % of portfolio
Alphabet Inc Trimmed −168,099 −$52.6M 6.5%
CD Cadence Design System Inc Added +153,334 +$47.9M 4.4%
Cme Group Inc Trimmed −163,414 −$44.6M 0.5%
Microsoft Corp Trimmed −70,745 −$34.2M 6.9%
Zoetis Inc Added +261,155 +$32.9M 3.3%
IL Idexx Labs Inc Trimmed −40,486 −$27.4M 5.3%
WP West Pharmaceutical Svsc Inc Trimmed −48,728 −$13.4M 5.9%
Edwards Lifesciences Corp Trimmed −132,514 −$11.3M 6.1%
Unitedhealth Group Inc Trimmed −29,784 −$9.83M 9.1%
Mettler Toledo International Trimmed −6,613 −$9.22M 5.7%

Showing the 10 largest of 24 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 14, 2025

Company Action Shares changed Value of change % of portfolio
CD Cadence Design System Inc Trimmed −214,636 −$58M 0.5%
Cme Group Inc Added +159,930 +$56.2M 4.8%
IL Idexx Labs Inc Trimmed −70,900 −$45.3M 6.5%
Microsoft Corp Trimmed −66,712 −$34.6M 9.5%
WP West Pharmaceutical Svsc Inc Trimmed −104,604 −$27.4M 6.2%
Alphabet Inc Trimmed −101,780 −$24.7M 7.7%
Mastercard Incorporated Trimmed −35,145 −$20M 9.3%
Edwards Lifesciences Corp Trimmed −183,101 −$14.2M 5.9%
VS Veeva Sys Inc Trimmed −41,860 −$12.5M 6.3%
Intuitive Surgical Inc Added +21,724 +$9.72M 4.7%

Showing the 10 largest of 22 changes.

Q2 2025

quarter ended June 30, 2025 · filed July 07, 2025

Company Action Shares changed Value of change % of portfolio
Nike Inc Exited −1,152,119 −$73.1M —
Autodesk Inc Added +186,295 +$57.7M 4.4%
Unitedhealth Group Inc Added +129,583 +$40.4M 8.1%
IL Idexx Labs Inc Trimmed −53,773 −$28.8M 7.5%
VS Veeva Sys Inc Trimmed −83,709 −$24.1M 6.4%
Microsoft Corp Trimmed −42,499 −$21.1M 10.5%
Edwards Lifesciences Corp Trimmed −130,584 −$10.2M 6.4%
Mastercard Incorporated Trimmed −17,128 −$9.62M 9.7%
Alphabet Inc Trimmed −34,198 −$6.03M 6.3%
Adobe Inc Trimmed −12,642 −$4.89M 6.1%

Showing the 10 largest of 23 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 14, 2025

Company Action Shares changed Value of change % of portfolio
CD Cadence Design System Inc New +254,788 +$64.8M 4.2%
Mastercard Incorporated Trimmed −70,614 −$38.7M 10.0%
AP Accenture PLC Ireland Trimmed −69,320 −$21.6M 4.4%
Unitedhealth Group Inc Trimmed −39,386 −$20.6M 9.0%
Tyler Technologies Inc Trimmed −33,361 −$19.4M 5.7%
Microsoft Corp Trimmed −49,703 −$18.7M 8.9%
Intuitive Surgical Inc Trimmed −31,274 −$15.5M 4.1%
Nike Inc Trimmed −189,249 −$12M 4.8%
Autodesk Inc New +30,977 +$8.11M 0.5%
Edwards Lifesciences Corp Trimmed −109,530 −$7.94M 6.5%

Showing the 10 largest of 23 changes.

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