Seilern Investment Management Ltd
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed January 9, 2026), Seilern Investment Management Ltd reported 24 stock positions worth $1.3 billion. Its top holding was Mastercard Class A (MA) at 9.7% of the portfolio, followed by Unitedhealth (UNH, 9.1%) and Microsoft (MSFT, 6.9%). Compared with Q3 2025, it opened 2 new positions, added to 6 and reduced 16. The biggest buy was Cadence Design SYS (CDNS, shares +557%) and the biggest sale Cme (CME, shares −87%).
- Most Recent 13F
- Q2 2026
- Location
- LONDON, X0
- CIK
- 0001817797
- Portfolio Value
- $1.3B (Q4 2025)
- SEC Filing
- 0001817797-26-000001 ↗ filed Jan 9, 2026
Holdings Value
Holdings 24 stocks · $1.3B
| MA Mastercard Inc. Class A | 9.70% | 219,171 | $125.1M | Reduce -3.2% |
| UNH Unitedhealth Group Inc. | 9.11% | 355,936 | $117.5M | Reduce -7.7% |
| MSFT Microsoft Corp. | 6.89% | 183,799 | $88.9M | Reduce -27.8% |
| GOOGL Alphabet Inc. Class A | 6.54% | 269,430 | $84.3M | Reduce -38.4% |
| ADBE Adobe Inc. | 6.30% | 232,001 | $81.2M | Reduce -2.1% |
| EW Edwards Lifesciences Corp. | 6.10% | 923,260 | $78.7M | Reduce -12.6% |
| WST West Pharmaceutical Services | 5.94% | 278,229 | $76.6M | Reduce -14.9% |
| ISRG Intuitive Surgical Inc. | 5.82% | 132,413 | $75.0M | Reduce -9.4% |
| MTD Mettler-Toledo International | 5.74% | 53,052 | $74.0M | Reduce -11.1% |
| ADSK Autodesk Inc. | 5.44% | 236,991 | $70.2M | Add +8.3% |
| VEEV Veeva Systems Inc. Class A | 5.43% | 313,872 | $70.1M | Add +6.7% |
| TYL Tyler Technologies Inc. | 5.32% | 151,024 | $68.6M | Add +10.6% |
| IDXX Idexx Laboratories Inc. | 5.29% | 100,790 | $68.2M | Reduce -28.7% |
| ACN Accenture PLC Class A | 4.71% | 226,360 | $60.7M | Add +13.7% |
| CDNS Cadence Design SYS Inc. | 4.38% | 180,878 | $56.5M | Add +556.7% |
| ZTS Zoetis Inc. | 3.25% | 333,465 | $42.0M | Add +361.2% |
| BKNG Booking Holdings Inc. | 0.66% | 1,579 | $8.5M | Reduce -13.3% |
| MCO Moody's Corp. | 0.55% | 13,964 | $7.1M | Reduce -5.6% |
| GGG Graco Inc. | 0.53% | 83,370 | $6.8M | Reduce -9.6% |
| CME Cme Group Inc. | 0.50% | 23,826 | $6.5M | Reduce -87.3% |
| ADP Automatic Data Processing | 0.50% | 25,061 | $6.4M | Reduce -26.6% |
| V Visa Inc. Class A | 0.47% | 17,255 | $6.1M | Reduce -13.4% |
| CPRT Copart Inc. | 0.42% | 137,814 | $5.4M | New |
| TW Tradeweb Markets Inc. Class A | 0.41% | 48,939 | $5.3M | New |
Portfolio Sells Q3 2025 → Q4 2025
| CME Cme Group Inc. | Reduce -87.3% | 0.50% | −4.25 |
| MSFT Microsoft Corp. | Reduce -27.8% | 6.89% | −2.64 |
| IDXX Idexx Laboratories Inc. | Reduce -28.7% | 5.29% | −1.24 |
| GOOGL Alphabet Inc. Class A | Reduce -38.4% | 6.54% | −1.15 |
| UNH Unitedhealth Group Inc. | Reduce -7.7% | 9.11% | −0.51 |
| WST West Pharmaceutical Services | Reduce -14.9% | 5.94% | −0.26 |
| ADP Automatic Data Processing | Reduce -26.6% | 0.50% | −0.22 |
| BKNG Booking Holdings Inc. | Reduce -13.3% | 0.66% | −0.05 |
| GGG Graco Inc. | Reduce -9.6% | 0.53% | −0.04 |
| V Visa Inc. Class A | Reduce -13.4% | 0.47% | −0.02 |
| MCO Moody's Corp. | Reduce -5.6% | 0.55% | +0.04 |
| EW Edwards Lifesciences Corp. | Reduce -12.6% | 6.10% | +0.17 |
| ADBE Adobe Inc. | Reduce -2.1% | 6.30% | +0.25 |
| MA Mastercard Inc. Class A | Reduce -3.2% | 9.70% | +0.39 |
| MTD Mettler-Toledo International | Reduce -11.1% | 5.74% | +0.44 |
| ISRG Intuitive Surgical Inc. | Reduce -9.4% | 5.82% | +1.09 |
Portfolio Buys Q3 2025 → Q4 2025
| CDNS Cadence Design SYS Inc. | Add +556.7% | 4.38% | +3.85 |
| ZTS Zoetis Inc. | Add +361.2% | 3.25% | +2.49 |
| ACN Accenture PLC Class A | Add +13.7% | 4.71% | +1.16 |
| CPRT Copart Inc. | New | 0.42% | +0.42 |
| ADSK Autodesk Inc. | Add +8.3% | 5.44% | +0.41 |
| TW Tradeweb Markets Inc. Class A | New | 0.41% | +0.41 |
| TYL Tyler Technologies Inc. | Add +10.6% | 5.32% | +0.15 |
| VEEV Veeva Systems Inc. Class A | Add +6.7% | 5.43% | −0.90 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 24 | $793.8M | MA, UNH, VEEV, EW, IDXX |
| Q1 2026 | 24 | $838.5M | MA, UNH, TYL, WST, VEEV |
| Q4 2025 | 24 | $1.3B | MA, UNH, MSFT, GOOGL, ADBE |
| Q3 2025 | 22 | $1.4B | UNH, MSFT, MA, GOOGL, IDXX |
| Q2 2025 | 22 | $1.5B | MSFT, MA, UNH, IDXX, EW |
| Q1 2025 | 23 | $1.5B | MA, UNH, MSFT, IDXX, EW |
| Q4 2024 | 21 | $1.8B | MA, MSFT, UNH, WST, IDXX |