Brummer Multi-Strategy AB
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 4, 2026), Brummer Multi-Strategy AB reported 11 stock positions worth $16.5 million. Its top holding was Newmark Class A (NMRK) at 21.0% of the portfolio, followed by Cigna (CI, 19.7%) and Arvinas (ARVN, 11.9%). Compared with Q3 2025, it opened 9 new positions, sold out of 2 and added to 2. The biggest buy was a new position in Cigna (CI) and the biggest sale an exit from PTC Therapeutics (PTCT).
- Most Recent 13F
- Q2 2026
- Location
- STOCKHOLM, V7
- CIK
- 0002003159
- Portfolio Value
- $16.5M (Q4 2025)
- SEC Filing
- 0002003159-26-000002 ↗ filed Feb 4, 2026
Holdings Value
Holdings 11 stocks · $16.5M
| NMRK Newmark Group Inc. Class A | 21.01% | 200,493 | $3.5M | Add +5.8% |
| CI The Cigna Group | 19.66% | 11,818 | $3.3M | New |
| ARVN Arvinas Inc. | 11.93% | 166,342 | $2.0M | New |
| ABVX Abivax SA-ADR | 11.72% | 14,375 | $1.9M | New |
| IQV Iqvia Holdings Inc. | 11.15% | 8,183 | $1.8M | New |
| MRVI Maravai Lifesciences Hldgs-A | 8.99% | 457,707 | $1.5M | New |
| BDX Becton Dickinson and Co. | 6.07% | 5,176 | $1.0M | Add +1001.3% |
| ATAIBECKLEY INC | 5.81% | 234,915 | $961K | New |
| SLNO Soleno Therapeutics Inc. | 2.45% | 8,741 | $405K | New |
| GREENLAND MINES LTD filed as KLOTHO NEUROSCIENCES INC | 1.06% | 606,757 | $175K | New |
| FHTX Foghorn Therapeutics Inc. | 0.15% | 4,708 | $25K | New |
Portfolio Sells Q3 2025 → Q4 2025
Portfolio Buys Q3 2025 → Q4 2025
| CI The Cigna Group | New | 19.66% | +19.66 |
| ARVN Arvinas Inc. | New | 11.93% | +11.93 |
| ABVX Abivax SA-ADR | New | 11.72% | +11.72 |
| IQV Iqvia Holdings Inc. | New | 11.15% | +11.15 |
| MRVI Maravai Lifesciences Hldgs-A | New | 8.99% | +8.99 |
| ATAIBECKLEY INC | New | 5.81% | +5.81 |
| BDX Becton Dickinson and Co. | Add +1001.3% | 6.07% | +4.47 |
| SLNO Soleno Therapeutics Inc. | New | 2.45% | +2.45 |
| GREENLAND MINES LTD | New | 1.06% | +1.06 |
| FHTX Foghorn Therapeutics Inc. | New | 0.15% | +0.15 |
| NMRK Newmark Group Inc. Class A | Add +5.8% | 21.01% | −43.38 |